2024 AF (ESC/EACTS)

Van Gelder IC, Rienstra M, et al. 2024 ESC Guidelines for the management of atrial fibrillation (EACTS). Eur Heart J 2024;45:3314–3414.

2024 ESC Guidelines for the management of atrial fibrillation developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS)

Developed by the task force for the management of atrial fibrillation of the European Society of Cardiology (ESC), with the special contribution of the European Heart Rhythm Association (EHRA) of the ESC. Endorsed by the European Stroke Organisation (ESO)

**Authors/Task Force Members: Isabelle C. Van Gelder [†], (Chairperson) (Netherlands), Michiel Rienstra ±, (Task Force Co-ordinator) (Netherlands), Karina V. Bunting ±, (Task Force Co-ordinator) (United Kingdom), Ruben Casado-Arroyo (Belgium), Valeria Caso 1 (Italy), Harry J.G.M. Crijns (Netherlands), Tom J.R. De Potter (Belgium), Jeremy Dwight (United Kingdom), Luigina Guasti (Italy), Thorsten Hanke 2 (Germany), Tiny Jaarsma (Sweden), Maddalena Lettino (Italy), Maja-Lisa Løchen (Norway), R. Thomas Lumbers (United Kingdom), Bart Maesen 2 (Netherlands), Inge Mølgaard (Denmark), Giuseppe M.C. Rosano (United Kingdom), Prashanthan Sanders (Australia), Renate B. Schnabel (Germany), Piotr Suwalski 2 (Poland), Emma Svennberg (Sweden), Juan Tamargo (Spain), Otilia Tica (Romania), Vassil Traykov (Bulgaria), Stylianos Tzeis (Greece), Dipak Kotecha [†], (Chairperson) (United Kingdom), and ESC Scientific Document Group

  • Corresponding authors: Isabelle C. Van Gelder, Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands. Tel: +31 50 361 1327. Email: i.c.van.gelder@umcg.nl; and Dipak Kotecha, Institute of Cardiovascular Sciences, University of Birmingham, United Kingdom & NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom. Tel: +44 121 371 8124. Email: d.kotecha@bham.ac.uk

† The two Chairpersons contributed equally to the document and are joint corresponding authors.

± The two Task Force Co-ordinators contributed equally to the document.

Author/Task Force Member affiliations are listed in author information.

  • 1 Representing European Stroke Organisation (ESO).

2 Representing European Association for Cardio-Thoracic Surgery (EACTS).

ESC Clinical Practice Guidelines (CPG) Committee: listed in the Appendix.

ESC subspecialty communities having participated in the development of this document:

Associations: Association of Cardiovascular Nursing & Allied Professions (ACNAP), Association for Acute CardioVascular Care (ACVC), European Association of Cardiovascular Imaging (EACVI), European Association of Preventive Cardiology (EAPC), European Association of Percutaneous Cardiovascular Interventions (EAPCI), European Heart Rhythm Association (EHRA), Heart Failure Association (HFA).

Councils: Council for Cardiology Practice, Council of Cardio-Oncology, Council on Cardiovascular Genomics, Council on Stroke.

Working Groups: Cardiac Cellular Electrophysiology, Cardiovascular Pharmacotherapy, E-Cardiology, Thrombosis.

Patient Forum

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Document Reviewers: Nikolaos Dagres, (CPG Review Co-ordinator) (Germany), Bianca Rocca, (CPG Review Co-ordinator) (Italy), Syed Ahsan (United Kingdom), Pietro Ameri (Italy), Elena Arbelo (Spain), Axel Bauer (Austria), Michael A. Borger (Germany), Sergio Buccheri (Sweden), Barbara Casadei (United Kingdom), Ovidiu Chioncel (Romania), Dobromir Dobrev (Germany), Laurent Fauchier (France), Bruna Gigante (Sweden), Michael Glikson (Israel), Ziad Hijazi (Sweden), Gerhard Hindricks (Germany), Daniela Husser (Germany), Borja Ibanez (Spain), Stefan James (Sweden), Stefan Kaab (Germany), Paulus Kirchhof (Germany), Lars Køber (Denmark), Konstantinos C. Koskinas (Switzerland), Thomas Kumler (Denmark), Gregory Y.H. Lip (United Kingdom), John Mandrola (United States of America), Nikolaus Marx (Germany), John William Mcevoy (Ireland), Borislava Mihaylova (United Kingdom), Richard Mindham (United Kingdom), Denisa Muraru (Italy), Lis Neubeck (United Kingdom), Jens Cosedis Nielsen (Denmark), Jonas Oldgren (Sweden), Maurizio Paciaroni (Italy), Agnes A. Pasquet (Belgium), Eva Prescott (Denmark), Filip Rega[2 ] (Belgium), Francisco Javier Rossello (Spain), Marcin Rucinski (Poland), Sacha P. Salzberg[2 ] (Switzerland), Sam Schulman (Canada), Philipp Sommer (Germany), Jesper Hastrup Svendsen (Denmark), Jurrien M. ten Berg (Netherlands), Hugo Ten Cate (Netherlands), Ilonca Vaartjes (Netherlands), Christiaan Jm. Vrints (Belgium), Adam Witkowski (Poland), and Katja Zeppenfeld (Netherlands)

All experts involved in the development of these guidelines have submitted declarations of interest which are reported in a supplementary document to the guidelines. See the European Heart Journal online or www.escardio.org/guidelines for supplementary documents as well as evidence tables.

Disclaimer. The ESC Guidelines represent the views of the ESC and were produced after careful consideration of the scientific and medical knowledge and the evidence available at the time of their publication. The ESC is not responsible in the event of any contradiction, discrepancy and/or ambiguity between the ESC Guidelines and any other official recommendations or guidelines issued by the relevant public health authorities, in particular in relation to good use of healthcare or therapeutic strategies. Health professionals are encouraged to take the ESC Guidelines fully into account when exercising their clinical judgment, as well as in the determination and the implementation of preventive, diagnostic or therapeutic medical strategies; however, the ESC Guidelines do not override, in any way whatsoever, the individual responsibility of health professionals to make appropriate and accurate decisions in consideration of each patient’s health condition and in consultation with that patient and, where appropriate and/or necessary, the patient’s caregiver. Nor do the ESC Guidelines exempt health professionals from taking into full and careful consideration the relevant official updated recommendations or guidelines issued by the competent public health authorities, in order to manage each patient’s case in light of the scientifically accepted data pursuant to their respective ethical and professional obligations. It is also the health professional’s responsibility to verify the applicable rules and regulations relating to drugs and medical devices at the time of prescription. The ESC warns readers that the technical language may be misinterpreted and declines any responsibility in this respect.

Permissions. The content of these European Society of Cardiology (ESC) Guidelines has been published for personal and educational use only. No commercial use is authorized. No part of the ESC Guidelines may be translated or reproduced in any form without written permission from the ESC. Permissions can be obtained upon submission of a written request to Oxford University Press, the publisher of the European Heart Journal and the party authorized to handle such permissions on behalf of the ESC (journals.permissions@oup.com).

                                                                                                                                                                                                                                                                                                                        • Keywords Guidelines • Atrial fibrillation • AF-CARE • Comorbidity • Risk factors • Anticoagulation • Rate control • Rhythm control • Cardioversion • Antiarrhythmic drugs • Catheter ablation • AF surgery • Evaluation • Stroke • Thromboembolism

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Figure 15 Non-invasive diagnostic methods for AF screening 3372 Figure 16 Approaches to screening for AF 3374

|---|---|---|---| |Figure 15 Non-in|vasive diagnostic methods for AF screening 3372|CABANA|Catheter Ablation versus Anti-arrhythmic Drug| |Figure 16 Approaches to screening for AF 3374|||Therapy for Atrial Fibrillation (trial)| |||CAD|Coronary artery disease| |Abbreviations and acronyms AAD Antiarrhythmic drugs ACE Angiotensin-converting enzyme ACEi Angiotensin-converting enzyme inhibitor ACS Acute coronary syndromes ACTIVE W Atrial fbrillation Clopidogrel Trial with Irbesartan for prevention of Vascular Events (trial) AF Atrial fbrillation AF-CARE Atrial fbrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment AFEQT Atrial Fibrillation Effect on QualiTy-of-Life (questionnaire) AFFIRM Atrial Fibrillation Follow-up Investigation of Rhythm Management (trial)||CASTLE-AF CASTLE-HTx CCS CHADS2 CHA2DS2-VA CHA2DS2-VASc CKD|Catheter Ablation versus Standard Conventional Treatment in Patients With Left Ventricle (LV) Dysfunction and AF (trial) Catheter Ablation for Atrial Fibrillation in Patients With End-Stage Heart Failure and Eligibility for Heart Transplantation (trial) Chronic coronary syndrome Congestive heart failure, hypertension, age>75 years, diabetes; previous stroke (2 points) Congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years (score) Congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke or TIA or thromboembolism (2 points), vascular disease, age 65–74 years, sex category Chronic kidney disease| |AFL|Atrial futter|CMR|Cardiac magnetic resonance| |AFQLQ|Atrial Fibrillation Quality of Life Questionnaire|COMPASS|Cardiovascular Outcomes for People Using| |AF-QoL|Atrial Fibrillation Quality of Life (questionnaire)||Anticoagulation Strategies (trial)| |AFSS|Atrial Fibrillation Severity Scale|CPAP|Continuous positive airway pressure| |AI|Artifcial intelligence|CrCl|Creatinine clearance| |APACHE-AF|Apixaban After Anticoagulation-associated|CRT|Cardiac resynchronization therapy| ||Intracerebral Haemorrhage in Patients With Atrial|CT|Computed tomography| ||Fibrillation (trial)|CTA|Computed tomography angiography| |APAF-CRT|Ablate and Pace for Atrial Fibrillation—cardiac|CTI|Cavo-tricuspid isthmus| ||resynchronization therapy|DAPT|Dual antiplatelet therapy| |ARB|Angiotensin receptor blocker|DOAC|Direct oral anticoagulant| |ARTESiA|Apixaban for the Reduction of Thromboembolism|EAST-AFNET 4|Early treatment of Atrial fbrillation for Stroke| ||in Patients With Device-Detected Sub-Clinical||prevention Trial| ||Atrial Fibrillation (trial)|ECG|Electrocardiogram| |AT|Atrial tachycardia|ECV|Electrical cardioversion| |ATHENA|A Placebo-Controlled, Double-Blind, Parallel Arm|EHRA|European Heart Rhythm Association| ||Trial to Assess the Effcacy of Dronedarone 400 mg|ELAN|Early versus Late initiation of direct oral| ||twice daily for the Prevention of Cardiovascular||Anticoagulants in post-ischaemic stroke patients| ||Hospitalization or Death from Any Cause in||with atrial fbrillatioN (trial)| ||Patients with Atrial Fibrillation/Atrial Flutter (trial)|ESUS|Embolic stroke of undetermined source| |AUGUSTUS|An open-label, 2×2 factorial, randomized controlled,|FFP|Fresh frozen plasma| ||clinical trial to evaluate the safety of apixaban vs.|GI|Gastrointestinal| ||vitamin k antagonist and aspirin vs. aspirin placebo in|GWAS|Genome-wide association studies| ||patients with atrial fbrillation and acute coronary|HAS-BLED|Hypertension, Abnormal renal/liver function,| ||syndrome or percutaneous coronary intervention||Stroke, Bleeding history or predisposition, Labile| |AVERROES|Apixaban Versus Acetylsalicylic Acid to Prevent||international normalized ratio, Elderly (>65 years),| ||Stroke in Atrial Fibrillation Patients Who Have||Drugs/alcohol concomitantly (score)| ||Failed or Are Unsuitable for Vitamin K Antagonist|HAVOC|Hypertension, age, valvular heart disease,| ||Treatment (trial)||peripheral vascular disease, obesity, congestive| |AVN|Atrioventricular node||heart failure, and coronary artery disease| |b.p.m.|Beats per minute|HbA1c|Haemoglobin A1c (glycated or glycosylated| |BMI|Body mass index||haemoglobin)| |BNP|B-type natriuretic peptide|HCM|Hypertrophic cardiomyopathy| |BP|Blood pressure|HF|Heart failure| |C2HEST|Coronary artery disease or chronic obstructive|HFmrEF|Heart failure with mildly reduced ejection fraction| ||pulmonary disease (1 point each); hypertension|HFpEF|Heart failure with preserved ejection fraction| ||(1 point); elderly (age≥75 years, 2 points); systolic|HFrEF|Heart failure with reduced ejection fraction| ||heart failure (2 points); thyroid disease|HR|Hazard ratio| ||(hyperthyroidism, 1 point)|i.v.|Intravenous|

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ICHIntracranial haemorrhage
ICHOMInternational Consortium for Health Outcomes
Measurement
IMTIntima-media thickness
INRInternational normalized ratio (of prothrombin
time)
LALeft atrium
LAALeft atrial appendage
LAAOLeft atrial appendage occlusion
LAAOS IIILeft Atrial Appendage Occlusion Study
LEGACYLong-Term Effect of Goal directed weight
management on Atrial Fibrillation Cohort: a 5 Year
follow-up study
LMWHLow molecular weight heparin
LOOPAtrial Fibrillation Detected by Continuous ECG
Monitoring (trial)
LVLeft ventricle
LVEFLeft ventricular ejection fraction
LVHLeft ventricular hypertrophy
mEHRAModifed European Heart Rhythm Association
score
MIMyocardial infarction
MRIMagnetic resonance imaging
NOAHNon-vitamin K Antagonist Oral Anticoagulants
in Patients With Atrial High Rate Episodes (trial)
NSAIDNon-steroidal anti-infammatory drug
NT-proBNPN-terminal pro-B-type natriuretic peptide
NYHANew York Heart Association
OACOral anticoagulant(s)
OROdds ratio
OSAObstructive sleep apnoea
PADPeripheral arterial disease
PCCProthrombin complex concentrate
PCIPercutaneous intervention
PFOPatent foramen ovale
POAFPost-operative atrial fbrillation
PPGPhotoplethysmography
PROMPatient-reported outcome measure
PVDPeripheral vascular disease
PVIPulmonary vein isolation
QLAFQuality of Life in Atrial Fibrillation (questionnaire)
QRSQ wave, R wave, and S wave, the ‘QRS complex’
represents ventricular depolarization
RACE 7Rate Control versus Electrical Cardioversion
ACWASTrial 7—Acute Cardioversion versus Wait and See
(trial)
RACE IRAte Control versus Electrical cardioversion study
RACE IIRate Control Effcacy in Permanent Atrial
Fibrillation (trial)
RACE 3Routine versus Aggressive upstream rhythm
Control for prevention of Early AF in heart failure
(trial)
RACE 4IntegRAted Chronic Care Program at Specialized
AF Clinic Versus Usual CarE in Patients with Atrial
Fibrillation (trial)
RATE-AFRAte control Therapy Evaluation in permanent
Atrial Fibrillation (trial)
RCTRandomized controlled trial
RRRelative risk
SAVESleep Apnea cardioVascular Endpoints (trial)
SBPSystolic blood pressure
SGLT2Sodium-glucose cotransporter-2
SIC-AFSuccessful Intravenous Cardioversion for Atrial
Fibrillation
SORT-AFSupervised Obesity Reduction Trial for AF
Ablation Patients (trial)
SoSTARTStart or STop Anticoagulants Randomised Trial
SRSinus rhythm
STEEER-AFStroke prevention and rhythm control Therapy:
Evaluation of an Educational programme of the
European Society of Cardiology in a cluster-
Randomised trial in patients with Atrial Fibrillation
(trial)
STEMIST-segment elevation myocardial infarction
STROKESTOPSystematic ECG Screening for Atrial Fibrillation
Among 75 Year Old Subjects in the Region of
Stockholm and Halland, Sweden (trial)
TEThromboembolism
TIATransient ischaemic attack
TIMINGTiming of Oral Anticoagulant Therapy in Acute
Ischemic Stroke With Atrial Fibrillation (trial)
TOETransoesophageal echocardiography
TSHThyroid-stimulating hormone
TTETransthoracic echocardiogram
TTRTime in therapeutic range
UFHUnfractionated heparin
VKAVitamin K antagonist

1. Preamble

Guidelines evaluate and summarize available evidence with the aim of assisting health professionals in proposing the best diagnostic or therapeutic approach for an individual patient with a given condition. Guidelines are intended for use by health professionals and the European Society of Cardiology (ESC) makes its Guidelines freely available.

ESC Guidelines do not override the individual responsibility of health professionals to make appropriate and accurate decisions in consideration of each patient’s health condition and in consultation with that patient or the patient’s caregiver where appropriate and/ or necessary. It is also the health professional’s responsibility to verify the rules and regulations applicable in each country to drugs and devices at the time of prescription and to respect the ethical rules of their profession.

ESC Guidelines represent the official position of the ESC on a given topic and are regularly updated when warranted by new evidence. ESC Policies and Procedures for formulating and issuing ESC Guidelines can be found on the ESC website (https://www.escardio.org/Guidelines/ Clinical-Practice-Guidelines/Guidelines-development/Writing-ESCGuidelines). This guideline updates and replaces the previous version from 2020.

The Members of this task force were selected by the ESC to include professionals involved with the medical care of patients with this pathology as well as patient representatives and methodologists. The selection procedure included an open call for authors and aimed to include members from across the whole of the ESC region and from relevant ESC Subspecialty Communities. Consideration was given to diversity

ESC Guidelines

and inclusion, notably with respect to gender and country of origin. The task force performed a critical review and evaluation of the published literature on diagnostic and therapeutic approaches including assessment of the risk–benefit ratio. The strength of every recommendation and the level of evidence supporting them were weighed and scored according to predefined scales as outlined in Tables 1 and 2 below. Patient-reported outcome measures (PROMs) and

patient-reported experience measures were also evaluated as the basis for recommendations and/or discussion in these guidelines. The task force followed ESC voting procedures and all approved recommendations were subject to a vote and achieved at least 75% agreement among voting members. Members of the task force with declared interests on specific topics were asked to abstain from voting on related recommendations.

Table 1 Classes of recommendations

Wording to use Defnition
Classes of recommendationsClass I Class IIb Class IIa Class IIEvidence and/or general agreement that a given treatment or procedure is benefcial, useful, efective. Conficting evidence and/or a divergence of opinion about the usefulness/ efcacy of the given treatment or procedure. Is recommended or is indicated Usefulness/efcacy is less well established by evidence/opinion. May be considered Weight of evidence/opinion is in favour of usefulness/efcacy. Should be considered
Class IIIEvidence or general agreement that the Is not recommended
given treatment or procedure is not useful/efective, and in some cases may be harmful.©ESC 2024

Table 2 Levels of evidence

Level ofData derived from multiple randomized clinical trials
evidence Aor meta-analyses.
Level ofData derived from a single randomized clinical trial
evidence Bor large non-randomized studies.
Level of evidence CConsensus of opinion of the experts and/or small studies, retrospective studies, registries.©ESC 2024

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The experts of the writing and reviewing panels provided declaration of interest forms for all relationships that might be perceived as real or potential sources of conflicts of interest. Their declarations of interest were reviewed according to the ESC declaration of interest rules which can be found on the ESC website (http://www.escardio.org/guidelines) and have been compiled in a report published in a supplementary document with the guidelines. Funding for the development of ESC Guidelines is derived entirely from the ESC with no involvement of the healthcare industry.

The ESC Clinical Practice Guidelines (CPG) Committee supervises and co-ordinates the preparation of new guidelines and is responsible for the approval process. In addition to review by the CPG Committee, ESC Guidelines undergo multiple rounds of double-blind peer review by external experts, including members from across the whole of the ESC region, all National Cardiac Societies of the ESC and from relevant ESC Subspecialty Communities. After appropriate revisions, the guidelines are signed off by all the experts in the task force. The finalized document is signed off by the CPG Committee for publication in the European Heart Journal.

ESC Guidelines are based on analyses of published evidence, chiefly on clinical trials and meta-analyses of trials, but potentially including other types of studies. Evidence tables summarizing key information from relevant studies are generated early in the guideline development process to facilitate the formulation of recommendations, to enhance comprehension of recommendations after publication, and reinforce transparency in the guidelines development process. The tables are published in their own section of ESC Guidelines and reference specific recommendation tables.

Off-label use of medication may be presented in this guideline if a sufficient level of evidence shows that it can be considered medically appropriate for a given condition. However, the final decisions concerning an individual patient must be made by the responsible health professional giving special consideration to:

  • The specific situation of the patient. Unless otherwise provided for by national regulations, off-label use of medication should be limited to situations where it is in the patient’s interest with regard to the quality, safety, and efficacy of care, and only after the patient has been informed and has provided consent.

  • Country-specific health regulations, indications by governmental drug regulatory agencies, and the ethical rules to which health professionals are subject, where applicable.

2. Introduction

Atrial fibrillation (AF) is one of the most commonly encountered heart conditions, with a broad impact on all health services across primary and secondary care. The prevalence of AF is expected to double in the next few decades as a consequence of the ageing population, an increasing burden of comorbidities, improved awareness, and new technologies for detection.

The effects of AF are variable across individual patients; however, morbidity from AF remains highly concerning. Patients with AF can suffer from a variety of symptoms and poor quality of life. Stroke and heart failure as consequences of AF are now well appreciated by healthcare professionals, but AF is also linked to a range of other thromboembolic outcomes. These include subclinical cerebral damage (potentially leading to vascular dementia), and thromboembolism to every other organ, all of which contribute to the higher risk of mortality associated with AF.

The typical drivers of AF onset and progression are a range of comorbidities and associated risk factors. To achieve optimal care for patients with AF, it is now widely accepted that these comorbidities and risk factors must be managed early and in a dynamic way. Failure to do so contributes to recurrent cycles of AF, treatment failure, poor patient outcomes, and a waste of healthcare resources. In this iteration of the European Society of Cardiology (ESC) practice guidelines on AF, the task force has consolidated and evolved past approaches to develop the AF-CARE framework (Atrial Fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment). Comorbidities and risk factors is placed as the initial and central component of patient management. This should be considered first as it applies to all patients with AF, regardless of their thromboembolic risk factors or any symptoms that might warrant intervention. This is followed by considering how best to [A] avoid stroke and thromboembolism, and then the options available to reduce symptoms, and in some cases improve prognosis, through [R] rate and rhythm control. [E] Evaluation and reassessment should be individualized for every patient, with a dynamic approach that accounts for how AF and its associated conditions change over time.

Patient empowerment is critical in any long-term medical problem to achieve better outcomes, encourage adherence, and to seek timely guidance on changes in clinical status. A patient-centred, shared decision-making approach will facilitate the choice of management that suits each individual patient, particularly in AF where some therapies and interventions improve clinical outcomes, and others are focused on addressing symptoms and quality of life. Education and awareness are essential, not only for patients but also healthcare professionals in order to constrain the impact of AF on patients and healthcare services.

With this in mind, the task force have created a range of patient pathways that cover the major aspects of AF-CARE. At present, these remain based on the time-orientated classification of AF (first-diagnosed, paroxysmal, persistent, and permanent), but ongoing research may allow for pathology-based classifications and a future of personalized medicine. Clinical practice guidelines can only cover common scenarios with an evidence base, and so there remains a need for healthcare professionals to care for patients within a local multidisciplinary team. While guidelineadherent care has repeatedly been shown to improve patient outcomes, the actual implementation of guidelines is often poor in many healthcare settings. This has been demonstrated in the ESC’s first randomized controlled trial (RCT), STEEER-AF (Stroke prevention and rhythm control Therapy: Evaluation of an Educational programme of the European Society of Cardiology in a cluster-Randomised trial in patients with Atrial Fibrillation), which has sought to improve guideline adherence in parallel to guideline production. The task force developing the 2024 AF Guidelines have made implementation a key goal by focusing on the underpinning evidence and using a consistent writing style for each recommendation (the intervention proposed, the population it should be applied to, and the potential value to the patient, followed by any exceptions). Tables 3 and 4 below outline new recommendations and those with important revisions. These initiatives have been designed to make the 2024 ESC Guidelines for the management of AF easier to read, follow, and implement, with the aim of improving the lives of patients with AF. A patient version of these guidelines is also available at http://www.escardio.org/Guidelines/ guidelines-for-patients.

ESC Guidelines

2.1. What is new

Table 3 New recommendations

ClassaLevelb
Diagnostic evaluation of new AF—****Section3.4
A transthoracic echocardiogram is recommended in patients with an AF diagnosis where this will guide treatment decisions.IC
Principles of AF-CARE—****Section4.2
Education directed to patients, family members, caregivers, and healthcare professionals is recommended to optimize shared decision-making, facilitating open discussion of both the beneft and risk associated with each treatment option.IC
Access to patient-centred management according to the AF-CARE principles is recommended in all patients with AF, regardless of gender, ethnicity, and socioeconomic status, to ensure equality in healthcare provision and improve outcomes.IC
Patient-centred AF management with a multidisciplinary approach should be considered in all patients with AF to optimize management and improve outcomes.IIaB
[C] Comorbidity and risk factor management—****Section5
Diuretics are recommended in patients with AF, HF, and congestion to alleviate symptoms and facilitate better AF management.IC
Appropriate medical therapy for HF is recommended in AF patients with HF and impaired LVEF to reduce symptoms and/or HF hospitalization and prevent AF recurrence.IB
Sodium-glucose cotransporter-2 inhibitors are recommended for patients with HF and AF regardless of left ventricular ejection fraction to reduce the risk of HF hospitalization and cardiovascular death.IA
Effective glycaemic control is recommended as part of comprehensive risk factor management in individuals with diabetes mellitus and AF, to reduce burden, recurrence, and progression of AF.IC
Bariatric surgery may be considered in conjunction with lifestyle changes and medical management in individuals with AF and body mass index≥40 kg/m2 cwhere a rhythm control strategy is planned, to reduce recurrence and progression of AF.IIbC
Management of obstructive sleep apnoea may be considered as part of a comprehensive management of risk factors in individuals with AF to reduce recurrence and progression.IIbB
When screening for obstructive sleep apnoea in individuals with AF, using only symptom-based questionnaires is not recommended.IIIB
Initiating oral anticoagulation—****Section6.1
Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.IA
A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation.IC
A CHA2DS2-VA score of 1 should be considered an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation.IIaC
Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.IB
Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.IB
Direct oral anticoagulant therapy may be considered in patients with asymptomatic device-detected subclinical AF and elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism, excluding patients at high risk of bleeding.IIbB
Oral anticoagulants—****Section6.2
A reduced dose of DOAC therapy is not recommended, unless patients meet DOAC-specifc criteria, to prevent underdosing and avoidable thromboembolic events.IIIB
Maintaining VKA treatment rather than switching to a DOAC may be considered in patients aged≥75 years on clinically stable therapeutic VKA with polypharmacy to prevent excess bleeding risk.IIbB
Antiplatelet drugs and combinations with anticoagulants—****Section6.3
Adding antiplatelet treatment to oral anticoagulation is not recommended in AF patients for the goal of preventing ischaemic stroke or thromboembolism.IIIB
Continued

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Residual ischaemic stroke risk despite anticoagulation—****Section6.4Residual ischaemic stroke risk despite anticoagulation—****Section6.4
A thorough diagnostic work-up should be considered in patients taking an oral anticoagulant and presenting with ischaemic stroke or thromboembolism to prevent recurrent events, including assessment of non-cardioembolic causes, vascular risk factors, dosage, and adherence.IIaB
Adding antiplatelet treatment to anticoagulation is not recommended in patients with AF to prevent recurrent embolic stroke.IIIB
Switching from one DOAC to another, or from a DOAC to a VKA, without a clear indication is not recommended in patients with AF to prevent recurrent embolic stroke.IIIB
Surgical left atrial appendage occlusion—****Section6.6
Surgical closure of the left atrial appendage should be considered as an adjunct to oral anticoagulation in patients with AF undergoing endoscopic or hybrid AF ablation to prevent ischaemic stroke and thromboembolism.IIaC
Stand-alone endoscopic surgical closure of the left atrial appendage may be considered in patients with AF and contraindications for long-term anticoagulant treatment to prevent ischaemic stroke and thromboembolism.IIbC
Management of bleeding on anticoagulant therapy—****Section6.7.2
Specifc antidotes should be considered in AF patients on a DOAC who develop a life-threatening bleed, or bleed into a critical site, to reverse the antithrombotic effect.IIaB
Management of heart rate in patients with AF—****Section7.1
Rate control therapy is recommended in patients with AF, as initial therapy in the acute setting, an adjunct to rhythm control therapies, or as a sole treatment strategy to control heart rate and reduce symptoms.IB
Beta-blockers, diltiazem, verapamil, or digoxin are recommended as frst-choice drugs in patients with AF and LVEF>40% to control heart rate and reduce symptoms.IB
Atrioventricular node ablation combined with cardiac resynchronization therapy should be considered in severely symptomatic patients with permanent AF and at least one hospitalization for HF to reduce symptoms, physical limitations, recurrent HF hospitalization, and mortality.IIaB
General principles and anticoagulation—****Section7.2.1
Direct oral anticoagulants are recommended in preference to VKAs in eligible patients with AF undergoing cardioversion for thromboembolic risk reduction.IA
Cardioversion of AF (either electrical or pharmacological) should be considered in symptomatic patients with persistent AF as part of a rhythm control approach.IIaB
A wait-and-see approach for spontaneous conversion to sinus rhythm within 48 h of AF onset should be considered in patients without haemodynamic compromise as an alternative to immediate cardioversion.IIaB
Implementation of a rhythm control strategy should be considered within 12 months of diagnosis in selected patients with AF at risk of thromboembolic events to reduce the risk of cardiovascular death or hospitalization.IIaB
Early cardioversion is not recommended without appropriate anticoagulation or transoesophageal echocardiography if AF duration is longer than 24 h, or there is scope to wait for spontaneous cardioversion.IIIC
Electrical cardioversion—****Section7.2.2
Electrical cardioversion as a diagnostic tool should be considered in patients with persistent AF where there is uncertainty about the value of sinus rhythm restoration on symptoms, or to assess improvement in left ventricular function.IIaC
Antiarrhythmic drugs—****Section7.2.4
Antiarrhythmic drug therapy is not recommended in patients with advanced conduction disturbances unless antibradycardia pacing is provided.IIIC
Catheter ablation—****Section7.2.5
Sinus node disease/tachycardia–bradycardia syndrome
Atrial fbrillation catheter ablation should be considered in patients with AF-related bradycardia or sinus pauses on AF termination to improve symptoms and avoid pacemaker implantation.IIaC
Recurrence after catheter ablation
Repeat AF catheter ablation should be considered in patients with AF recurrence after initial catheter ablation, provided the patient’s symptoms were improved after the initial PVI or after failed initial PVI, to reduce symptoms, recurrence, and progression of AF.IIaB
Anticoagulation in patients undergoing catheter ablation—****Section7.2.6
Uninterrupted oral anticoagulation is recommended in patients undergoing AF catheter ablation to prevent peri-procedural ischaemic stroke and thromboembolism.IA
Continued

ESC Guidelines

Endoscopic and hybrid AF ablation—****Section7.2.7Endoscopic and hybrid AF ablation—****Section7.2.7C A C B B B C A B A B B B B B B B B B B © ESC 2024
Continuation of oral anticoagulation is recommended in patients with AF at elevated thromboembolic risk after concomitant, endoscopic, or hybrid AF ablation, independent of rhythm outcome or LAA exclusion, to prevent ischaemic stroke and thromboembolism.IC
Endoscopic and hybrid ablation procedures should be considered in patients with symptomatic persistent AF refractory to AAD therapy to prevent symptoms, recurrence, and progression of AF, within a shared decision-making rhythm control team of electrophysiologists and surgeons.IIaA
AF ablation during cardiac surgery—****Section7.2.8
Intraprocedural imaging for detection of left atrial thrombus in patients undergoing surgical ablation is recommended to guide surgical strategy, independent of oral anticoagulant use, to prevent peri-procedural ischaemic stroke and thromboembolism.IC
Concomitant surgical ablation should be considered in patients undergoing non-mitral valve cardiac surgery and AF suitable for a rhythm control strategy to prevent symptoms and recurrence of AF, with shared decision-making supported by an experienced team of electrophysiologists and arrhythmia surgeons.IIaB
Patient-reported outcome measures—****Section8.4
Evaluating quality of care and identifying opportunities for improved treatment of AF should be considered by practitioners and institutions to improve patient experiences.IIaB
Acute and chronic coronary syndromes in patients with AF—****Section9.2
Recommendations for AF patients with chronic coronary or vascular disease
Antiplatelet therapy beyond 12 months is not recommended in stable patients with chronic coronary or vascular disease treated with oral anticoagulation, due to lack of effcacy and to avoid major bleeding.IIIB
Trigger-induced AF—****Section9.5
Long-term oral anticoagulation should be considered in suitable patients with trigger-induced AF at elevated thromboembolic risk to prevent ischaemic stroke and systemic thromboembolism.IIaC
Post-operative AF—****Section9.6
Peri-operative amiodarone therapy is recommended where drug therapy is desired to prevent post-operative AF after cardiac surgery.IA
Concomitant posterior peri-cardiotomy should be considered in patients undergoing cardiac surgery to prevent post-operative AF.IIaB
Patients with embolic stroke of unknown source (ESUS)—****Section9.7
Initiation of oral anticoagulation in ESUS patients without documented AF is not recommended due to lack of effcacy in preventing ischaemic stroke and thromboembolism.IIIA
Atrial futter—****Section9.14
Oral anticoagulation is recommended in patients with atrial futter at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.IB
Screening strategies for AF—****Section10.3
Review of an ECG (12-lead, single, or multiple leads) by a physician is recommended to provide a defnite diagnosis of AF and commence appropriate management.IB
Population-based screening for AF using a prolonged non-invasive ECG-based approach should be considered in individuals aged≥75 years, or≥65 years with additional CHA2DS2-VA risk factors to ensure earlier detection of AF.IIaB
Primary prevention of AF—****Section10.5
Maintaining optimal blood pressure is recommended in the general population to prevent AF, with ACE inhibitors or ARBs as frst-line therapy.IB
Appropriate medical HF therapy is recommended in individuals with HFrEF to prevent AF.IB
Maintaining normal weight (BMI 20–25 kg/m2) is recommended for the general population to prevent AF.IB
Maintaining an active lifestyle is recommended to prevent AF, with the equivalent of 150–300 min per week of moderate intensity or 75– 150 min per week of vigorous intensity aerobic physical activity.IB
Avoidance of binge drinking and alcohol excess is recommended in the general population to prevent AF.IB
Metformin or SGLT2 inhibitors should be considered for individuals needing pharmacological management of diabetes mellitus to prevent AF.IIaB
Weight reduction should be considered in obese individuals to prevent AF.IIaB

AAD, antiarrhythmic drugs; ACEi, angiotensin-converting enzyme inhibitor; AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; ARB, angiotensin receptor blocker; BMI, body mass index; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant; ECG, electrocardiogram; ESUS, embolic stroke of undetermined source; HF, heart failure; HFrEF, heart failure with reduced ejection fraction; LAA, left atrial appendage; LVEF, left ventricular ejection fraction; PVI, pulmonary vein isolation; SGLT2, sodium-glucose cotransporter-2; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence. cOr body mass index ≥35 kg/m2 with obesity-related complications.

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Table 4 Revised recommendations

Recommendations in 2020 versionClassaLevelbRecommendations in 2024 versionClassaLevelb
Section3.2—Diagnostic criteria for AF
ECG documentation is required to establish the diagnosis of AF. A standard 12-lead ECG recording or a single-lead ECG tracing of≥30 s showing heart rhythm with no discernible repeating P waves and irregular RR intervals (when atrioventricular conduction is not impaired) is diagnostic of clinical AF.IBConfrmation by an electrocardiogram (12-lead, multiple, or single leads) is recommended to establish the diagnosis of clinical AF and commence risk stratifcation and treatment.IA
In patients with AF, it is recommended to: • Evaluate AF-related symptoms (including fatigue, tiredness, exertional shortness of breath, palpitations, and chest pain) and quantify the patient symptom status using the modifed EHRA symptom scale before and after initiation of treatment. • Evaluate AF-related symptoms before and after cardioversion of persistent AF to aid rhythm control treatment decisions.ICEvaluating the impact of AF-related symptoms is recommended before and after major changes in treatment to inform shared decision-making and guide treatment choices.IB
Section5—[C] Comorbidity and risk factor management
Attention to good BP control is recommended in AF patients with hypertension to reduce AF recurrences and risk of stroke and bleeding.IBBlood pressure lowering treatment is recommended in patients with AF and hypertension to reduce recurrence and progression of AF and prevent adverse cardiovascular events.IB
In obese patients with AF, weight loss together with management of other risk factors should be considered to reduce AF incidence, AF progression, AF recurrences, and symptoms.IIaBWeight loss is recommended as part of comprehensive risk factor management in overweight and obese individuals with AF to reduce symptoms and AF burden, with a target of 10% or more reduction in body weight.IB
Physical activity should be considered to help prevent AF incidence or recurrence, with the exception of excessive endurance exercise, which may promote AF.IIaCA tailored exercise programme is recommended in individuals with paroxysmal or persistent AF to improve cardiorespiratory ftness and reduce AF recurrence.IB
Advice and management to avoid alcohol excess should be considered for AF prevention and in AF patients considered for OAC therapy.IIaBReducing alcohol consumption to≤3 standard drinks (≤30 grams of alcohol) per week is recommended as part of comprehensive risk factor management to reduce AF recurrence.IB
Section6.6—Surgical left atrial appendage occlusion
Surgical occlusion or exclusion of the LAA may be considered for stroke prevention in patients with AF undergoing cardiac surgery.IIbCSurgical closure of the left atrial appendage is recommended as an adjunct to oral anticoagulation in patients with AF undergoing cardiac surgery to prevent ischaemic stroke and thromboembolism.IB
Section6.7—Bleeding risk
For a formal risk-score-based assessment of bleeding risk, the HAS-BLED score should be considered to help address modifable bleeding risk factors, and to identify patients at high risk of bleeding (HAS-BLED score≥3) for early and more frequent clinical review and follow-up.IIaBAssessment and management of modifable bleeding risk factors is recommended in all patients eligible for oral anticoagulation, as part of shared decision-making to ensure safety and prevent bleeding.IB

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Section7.2—Rhythm control strategies in patients with AFSection7.2—Rhythm control strategies in patients with AFSection7.2—Rhythm control strategies in patients with AFSection7.2—Rhythm control strategies in patients with AFSection7.2—Rhythm control strategies in patients with AFA B A A B © ESC 2024
AF catheter ablation for PVI should/may be considered as frst-line rhythm control therapy to improve symptoms in selected patients with symptomatic: • Paroxysmal AF episodes.IIaBCatheter ablation is recommended as a frst-line option within a shared decision-making rhythm control strategy in patients with paroxysmal AF, to reduce symptoms, recurrence, and progression of AF.IA
Thoracoscopic procedures—including hybrid surgical ablation—should be considered in patients who have symptomatic paroxysmal or persistent AF refractory to AAD therapy and have failed percutaneous AF ablation, or with evident risk factors for catheter ablation failure, to maintain long-term sinus rhythm. The decision must be supported by an experienced team of electrophysiologists and surgeons.IIaBEndoscopic and hybrid ablation procedures may be considered in patients with symptomatic paroxysmal AF refractory to AAD therapy and failed percutaneous catheter ablation strategy to prevent symptoms, recurrence, and progression of AF, within a shared decision-making rhythm control team of electrophysiologists and surgeons.IIbB
Thoracoscopic procedures—including hybrid surgical ablation—may be considered in patients with persistent AF with risk factors for recurrence, who remain symptomatic during AF despite at least one failed AAD and who prefer further rhythm control therapy.IIbCEndoscopic and hybrid ablation procedures should be considered in patients with symptomatic persistent AF refractory to AAD therapy to prevent symptoms, recurrence, and progression of AF, within a shared decision-making rhythm control team of electrophysiologists and surgeons.IIaA
Concomitant AF ablation should be considered in patients undergoing cardiac surgery, balancing the benefts of freedom from atrial arrhythmias and the risk factors for recurrence (left atrial dilatation, years in AF, age, renal dysfunction, and other cardiovascular risk factors).IIaAConcomitant surgical ablation is recommended in patients undergoing mitral valve surgery and AF suitable for a rhythm control strategy to prevent symptoms and recurrence of AF, with shared decision-making supported by an experienced team of electrophysiologists and arrhythmia surgeons.IA
Section9.6—Post-operative AF
Long-term OAC therapy to prevent thromboembolic events may be considered in patients at risk for stroke with post-operative AF after cardiac surgery, considering the anticipated net clinical beneft of OAC therapy and informed patient preferences.IIbBLong-term oral anticoagulation should be considered in patients with post-operative AF after cardiac and non-cardiac surgery at elevated thromboembolic risk, to prevent ischaemic stroke and thromboembolism.IIaB

AAD, antiarrhythmic drugs; AF, atrial fibrillation; BP, blood pressure; ECG, electrocardiogram; EHRA, European Heart Rhythm Association; HAS-BLED, Hypertension, Abnormal renal/liver function, Stroke, Bleeding history or predisposition, Labile international normalized ratio, Elderly (>65 years), Drugs/alcohol concomitantly; LAA, left atrial appendage; OAC, oral anticoagulant; PVI, pulmonary vein isolation; RR, relative risk. aClass of recommendation. bLevel of evidence.

3. Definitions and clinical impact

3.1. Definition and classification of AF

Atrial fibrillation is one of the most common heart rhythm disorders. A supraventricular arrhythmia with uncoordinated atrial activation, AF results in a loss of effective atrial contraction (see Supplementary data online for pathophysiology). AF is reflected on the surface electrocardiogram (ECG) by the absence of discernible and regular P waves, and irregular activation of the ventricles. This results in no specific pattern to RR intervals, in the absence of an atrioventricular block. The definition of AF by temporal pattern is presented in Table 5. It should be noted that these categories reflect observed episodes of AF and do not suggest the underlying pathophysiological process. Some patients may progress consecutively through these categories, while others may need periodic reclassification due to their individual clinical status. Over time, some patients

with AF develop atrial and ventricular damage, which can make attempts at rhythm control futile. For this reason, or when patients and physicians make a joint decision for rate control, AF is classified as permanent (the most common ‘type’ of AF in historical registries). Despite many limitations, this task force have retained this temporal approach because most trials in patients with AF have used these definitions. Classifying AF by underlying drivers could inform management, but the evidence in support of the clinical use of such classification is currently lacking.

Several other classifications have been applied to patients with AF, many of which have limited evidence to support them. The definition of AF is a developing field and ongoing research may allow for pathology-based strategies that could facilitate personalized management in the future. Table 6 presents some commonly used concepts in current clinical practice. Due to the lack of supporting evidence (particularly for the time periods stated), this task force have edited and updated these definitions by consensus.

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Table 6Other clinical concepts relevant to AF Clinical concept Defnition Clinical AF Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Table 5Defnitions and classifcations for the temporal pattern of AF Temporal classifcation Defnition First-diagnosed AF AF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration. Paroxysmal AF AF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2 Persistent AF AF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF. Permanent AF AF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician. © ESC 2024 AF, atrial fbrillation.Table 6Other clinical concepts relevant to AF Clinical concept Defnition Clinical AF Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Table 5Defnitions and classifcations for the temporal pattern of AF Temporal classifcation Defnition First-diagnosed AF AF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration. Paroxysmal AF AF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2 Persistent AF AF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF. Permanent AF AF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician. © ESC 2024 AF, atrial fbrillation.Table 6Other clinical concepts relevant to AF Clinical concept Defnition Clinical AF Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Table 5Defnitions and classifcations for the temporal pattern of AF Temporal classifcation Defnition First-diagnosed AF AF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration. Paroxysmal AF AF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2 Persistent AF AF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF. Permanent AF AF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician. © ESC 2024 AF, atrial fbrillation.Table 6Other clinical concepts relevant to AF Clinical concept Defnition Clinical AF Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Table 5Defnitions and classifcations for the temporal pattern of AF Temporal classifcation Defnition First-diagnosed AF AF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration. Paroxysmal AF AF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2 Persistent AF AF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF. Permanent AF AF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician. © ESC 2024 AF, atrial fbrillation.Table 6Other clinical concepts relevant to AF Clinical concept Defnition Clinical AF Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Table 5Defnitions and classifcations for the temporal pattern of AF Temporal classifcation Defnition First-diagnosed AF AF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration. Paroxysmal AF AF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2 Persistent AF AF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF. Permanent AF AF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician. © ESC 2024 AF, atrial fbrillation.AF burdenThe overall time spent in AF during a clearly specifed and reported period of monitoring, expressed as a percentage of time.© ESC 2024
Temporal classifcationDefnition
Recent-onset AFThere is accumulating data on the value of the term recent-onset AF in decision-making for acute pharmacological or electrical cardioversion of AF. The cut-off time interval to defne this entity has not yet been established.8–10
First-diagnosed AFAF that has not been diagnosed before, regardless of symptom status, temporal pattern, or duration.
Paroxysmal AFAF which terminates spontaneously within 7 days or with the assistance of an intervention. Evidence suggests that most self-terminating paroxysms last<48 h.2
Trigger-induced AFNew AF episode in close proximity to a precipitating and potentially reversible factor.11–14
Persistent AFAF episodes which are not self-terminating. Many intervention trials have used 7 days as a cut-off for defning persistent AF.3,4 Long-standing persistent AF is arbitrarily defned as continuous AF of at least 12 months’ duration but where rhythm control is still a treatment option in selected patients, distinguishing it from permanent AF.
Early AFThe time since diagnosis that qualifes for early AF is dissociated from any underlying atrial cardiomyopathy and is not well defned, broadly ranging from 3 to 24 months.15–17 The defnition of early AF also does not necessarily determine early timing of intervention.
Permanent AFAF for which no further attempts at restoration of sinus rhythm are planned, after a shared decision between the patient and physician.
Self-terminating AFParoxysmal AF which terminates spontaneously.2 This defnition may be of value for decisions on acute rhythm control taken jointly by the patient and healthcare provider.
Table 6Other clinical AF, atrial fbrillation.
Non-self-terminating AFAtrial fbrillation which does not terminate spontaneously and, if needed, termination can be achieved only with an intervention.
Clinical conceptDefnition
Clinical conceptDefnition
Atrial cardiomyopathyA combination of structural, electrical, or functional changes in the atria that leads to clinical impact (e.g. progression/ recurrence of AF, limited effectiveness of AF therapy, and/or development of heart failure).18,19 Atrial cardiomyopathy includes infammatory and prothrombotic remodelling of the atria, neurohormonal activation (thereby affecting the ventricles), and fbrosis of myocardial tissue.20
Clinical AFSymptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism.
Device-detected subclinical AFDevice-detected subclinical AF refers to asymptomatic episodes of AF detected on continuous monitoring devices. These devices include implanted cardiac electronic devices, for which most atrial high-rate episodesamay be AF, as well as consumer-based wearable monitors. Confrmation is needed by a competent professional reviewing intracardiac electrograms or an ECG-recorded rhythm.5,6 Device-detected subclinical AF is apredictor of future clinical AF.7
Clinical concept Clinical AF Device-detected subclinical AFDefnition Symptomatic or asymptomatic AF that is clearly documented by an ECG (12-lead ECG or other ECG devices). The minimum duration to establish the diagnosis of clinical AF for ambulatory ECG is not clear and depends on the clinical context. Periods of 30 s or more may indicate clinical concern, and trigger further monitoring or risk stratifcation for thromboembolism. Device-detected subclinical AF refers to asymptomatic episodes of AF detected on continuous monitoring devices. These devices include implanted cardiac electronic devices, for which most atrial high-rate episodesamay be AF, as well as consumer-based wearable monitors. Confrmation is needed by a competent
professional reviewing intracardiac
electrograms or an ECG-recorded rhythm.5,6 Device-detected subclinical AF is apredictor of future clinical AF.7

AF, atrial fibrillation; b.p.m., beats per minute; ECG, electrocardiogram. aAtrial high-rate episodes are defined as episodes generally lasting more than 5 min with an atrial lead rate ≥170 b.p.m., detected by implanted cardiac devices that allow for automated continuous monitoring and storage of atrial rhythm. Atrial high-rate episodes need to be visually inspected because some may be electrical artefacts or false positives.

3.2. Diagnostic criteria for AF

In many patients, the diagnosis of AF is straightforward, e.g. typical symptoms associated with characteristic features on a standard 12-lead ECG that indicate the need for AF management. Diagnosis becomes more challenging in the context of asymptomatic episodes or AF detected on longer-term monitoring devices, particularly those that do

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not provide an ECG (see Section 10). To guard against inappropriate diagnosis of AF, this task force continues to recommend that ECG documentation is required to initiate risk stratification and AF management. In current practice, ECG confirmation can include multiple options: not only where AF persists across a standard 12-lead ECG, but also single- and multiple-lead devices that provide an ECG (see Supplementary data online, Additional Evidence Table S1). This does not include non-ECG wearables and other devices that typically use photoplethysmography. Note that many pivotal AF trials required two or more ECGs documenting AF, or an established AF diagnosis before randomization. The time period of AF required for diagnosis on monitoring devices is not clear cut. A standard 12-lead ECG measures 10 s, while 30 s or more on single-lead or multiple-lead ECG devices has generally been the consensus opinion, albeit with limited evidence.

patient-related effects of symptoms from AF over time can alternatively be evaluated using patient-reported outcome measures (see Section 8.4).

Recommendation Table 2 — Recommendations for symptom evaluation in patients with AF (see also Evidence Table 2)

RecommendationsClassaLevelb© ESC 2024
Evaluating the impact of AF-related symptoms is recommended before and after major changes in treatment to inform shared decision-making and guide treatment choices.17,36,46–55IB

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

Recommendation Table 1 — Recommendations for the diagnosis of AF (see also Evidence Table 1)

RecommendationsClassaLevelb© ESC 2024
Confrmation by an electrocardiogram (12-lead, multiple, or single leads) is recommended to establish the diagnosis of clinical AF and commence risk stratifcation and treatment.25–29IA

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

3.3. Symptoms attributable to AF

Symptoms related to episodes of AF are variable and broad, and not just typical palpitations ( Figure 1). Asymptomatic episodes of AF can occur, although 90% of patients with AF describe symptoms with variable severity. Even in symptomatic patients, some episodes of AF may remain asymptomatic. The presence or absence of symptoms is not related to incident stroke, systemic embolism, or mortality. However, symptoms do impact on patient quality of life. Cardiac-specific AF symptoms such as palpitations are less common than non-specific symptoms such as fatigue, but they significantly impair quality of life. Although women are often underrepresented in clinical trials of AF, the available literature suggests that women with AF appear to be more symptomatic and have poorer quality of life. Patients with AF report a higher burden of anxiety and severity of depression (odds ratio [OR], 1.08; 95% confidence interval [CI], 1.02–1.15; P =.009) as compared with the general population, with higher prevalence of these symptoms in women with AF.

Assessment of AF-related symptoms should be recorded initially, after a change in treatment, or before and after intervention. The modified European Heart Rhythm Association score (mEHRA) symptom classification ( Table 7) is similar to the New York Heart Association (NYHA) functional class for heart failure. It correlates with quality of life scores in clinical trials, is associated with clinical progress and events, and may be a valuable starting point in routine practice to assess the burden and impact of symptoms together with the patient. Note that symptoms may also relate to associated comorbidities and not just the AF component. The

3.4. Diagnostic evaluation of new AF

All patients with AF should be offered a comprehensive diagnostic assessment and review of medical history to identify risk factors and/or comorbidities needing active treatment. Table 8 displays the essential diagnostic work-up for a patient with AF.

A 12-lead ECG is warranted in all AF patients to confirm rhythm, determine ventricular rate, and look for signs of structural heart disease, conduction defects, or ischaemia. Blood tests should be carried out (kidney function, serum electrolytes, liver function, full blood count, glucose/glycated haemoglobin [HbA1c], and thyroid tests) to detect any concomitant conditions that may exacerbate AF or increase the risk of bleeding and/or thromboembolism.

Other investigations will depend on individualized assessment and the planned treatment strategy. A transthoracic echocardiogram (TTE) should be carried out in the initial work-up, where this will guide management decisions, or in patients where there is a change in cardiovascular signs or symptoms. The task force recognizes that accessibility to TTE might be limited or delayed in the primary care setting, but this should not delay initiation of oral anticoagulation (OAC) or other components of AF-CARE where indicated. Further details on TTE and reassessment (e.g. if elevated heart rate limits diagnostic imaging, or where there is a change in clinical status) are presented in Section 8.3. Additional imaging using different modalities may be required to assist with comorbidity and AF-related management (see Supplementary data online, Figure S1).

Recommendation Table 3 — Recommendations for diagnostic evaluation in patients with new AF (see also Evidence Table 3)

RecommendationsClassaLevelb© ESC 2024
A transthoracic echocardiogram is recommended in patients with an AF diagnosis where this will guide treatment decisions.59,65,67IC

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

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----- Start of picture text ----- Patient symptoms Palpitations Poor exercise capacity Shortness of breath Fainting (syncope) Fatigue Anxiety Chest pain Depressed mood Dizziness Disordered sleep Adverse outcomes Recurrent Cognitive decline and hospitalization vascular dementia Heart failure Depression Ischaemic stroke Impaired quality of life Thromboembolism Death Healthcare and society Doubling of AF 2010 2060 Increasing prevalence High economic cost Lifetime risk 1 in 5 1 in 3 Impact on individuals, families and communities 1–2% of healthcare expenditure b d r n o fi il a u l la t a t t c i c r i a o t o p m A n m e I s ----- End of picture text -----

Figure 1 Impacts and outcomes associated with clinical AF. AF, atrial fibrillation.

Table 7 The modified European Heart Rhythm Association (mEHRA) symptom classification

ScoreSymptomsDescription© ESC 2024
1NoneAF does not cause any symptoms
2aMildNormal daily activity not affected by symptoms related to AF
2bModerateNormal daily activity not affected by symptoms related to AF, but patient troubled by symptoms
3SevereNormal daily activity affected by symptoms related to AF
4DisablingNormal daily activity discontinued

AF, atrial fibrillation.

3.5. Adverse events associated with AF

Atrial fibrillation is associated with a range of serious adverse events ( Figure 1) (see Supplementary data online, Additional Evidence Table S2). Patients with AF also have high rates of hospitalization and complications from coexisting medical conditions. The most common non-fatal outcome in those with AF is heart failure, occurring in around half of patients over time. Patients with AF have a four- to fivefold increase in the relative risk (RR) of heart failure compared with those without AF, as demonstrated in two meta-analyses (RR, 4.62; 95% CI, 3.13–6.83 and RR, 4.99; 95% CI, 3.0–8.22). The next most common adverse impacts from AF are ischaemic stroke (RR, 2.3; 95% CI, 1.84–2.94), ischaemic heart disease (RR, 1.61; 95% CI, 1.38–1.87), and other thromboembolic events. The latter typically include arterial thromboembolic events (preferred to the term systemic), although venous thromboembolism is also associated

ESC Guidelines

Table 8 Diagnostic work-up for patients with AF

All patientsSelected patients© ESC 2024
• Medical history to determine AF pattern, relevant family history, and comorbidities, and to assess risk factors for thromboembolism and bleeding• Ambulatory ECG monitoring for assessing AF burden and ventricular rate control • Exercise ECG to evaluate rate control or effects of class IC antiarrhythmic drugs
• 12-lead ECG• Further blood tests for investigation of cardiovascular disease and refnement of stroke/ bleeding risk (e.g. NT-proBNP, troponin)
• Assess symptoms and functional impairment• Transoesophageal echocardiography for left atrial thrombus and valvular disease assessment
• Collect generic or AF-specifc patient-reported outcome measures• Coronary CT, angiography, or ischaemia imaging for suspected CAD
• Blood tests (full blood count, kidney function, serum electrolytes, liver function, glucose/HbA1c, and thyroid function)• CMR for evaluation of atrial and ventricular cardiomyopathies, and to plan interventional procedures
• Transthoracic echocardiography where this will guide AF-CARE management decisions• Brain imaging and cognitive function assessment for cerebrovascular disease and dementia risk

AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; CAD, coronary artery disease; CMR, cardiac magnetic resonance; CT, computed tomography; CTA, computed tomography angiography; ECG, electrocardiogram; HbA1c, glycated haemoglobin; NT-proBNP, N-terminal pro-B-type natriuretic peptide.

Atrial fibrillation is also associated with increased mortality. In 2017, AF contributed to over 250 000 deaths globally, with an age-standardized mortality rate of 4.0 per 100 000 people (95% uncertainty interval 3.9–4.2). The most frequent cause of death in patients with AF is heart failure related, with complex relationships to cardiovascular and non-cardiovascular disease. There is up to a two-fold increased risk of all-cause mortality (RR, 1.95; 95% CI, 1.50–2.54), and cardiovascular mortality (RR, 2.03; 95% CI, 1.79– 2.30) in AF compared with sinus rhythm. Even in the absence of major thromboembolic risk factors, the incidence of death is 15.5 per 1000 person-years in those with AF exposure, compared with 9.4 per 1000 person-years without (adjusted HR, 1.44; 95% CI, 1.38–1.50; P <.001). Patients with OAC-related bleeding have higher mortality, including both minor and major bleeding (as defined by the International Society on Thrombosis and Haemostasis scale). Despite OAC, patients with AF remain at high residual risk of death, highlighting the importance of attention to concomitant disease.

3.6. Atrial flutter

Atrial flutter (AFL) is the among the most common atrial tachyarrhythmias, with an overall incidence rate of 88 per 100 000 person-years, rising to 317 per 100 000 person-years in people over 50 years of age. Risk factors for AFL and AF are similar, and more than half of all patients with AFL will develop AF. Observational studies suggest that thromboembolic risk is elevated in AFL. In direct comparison of AFL with AF, some studies suggest a similar risk of stroke and others a lower risk in AFL, possibly due to different comorbidity burdens and the impact of confounders such as AFL/AF ablation and anticoagulation (more frequently stopped in AFL).

4. Patient pathways and management of AF

4.1. Patient-centred, multidisciplinary AF management

4.1.1. The patient at the heart of care

with AF. Patients with AF also have an increased risk of cognitive impairment (adjusted hazard ratio [HR], 1.39; 95% CI, 1.25–1.53) and dementia (OR, 1.6; 95% CI, 1.3–2.0). It should be noted that most of the observational studies on adverse events have a mix of patients taking and not taking OAC. When carefully controlling for the confounding effects of stroke, comorbidities, and OAC, AF exposure was still significantly associated with vascular dementia (HR, 1.68; 95% CI, 1.33–2.12; P <.001), but not Alzheimer’s disease (HR, 0.85; 95% CI, 0.70–1.03; P =.09).

Hospital admission rates due to AF vary widely depending on the population studied, and may be skewed by selection bias. In a Dutch RCT including first-diagnosed AF patients (mean age 64 years), cardiovascular hospitalization rates were 7.0% to 9.4% per year. An Australian study identified 473 501 hospitalizations for AF during 15 years of follow-up (300 million person-years), with a relative increase in AF hospitalizations of 203% over the study period, in contrast to an increase for all hospitalizations of 71%. The age-specific incidence of hospital admission increased particularly in the older age groups.

A patient-centred and integrated approach to AF management means working with a model of care that respects the patient’s experience, values, needs, and preferences for planning, co-ordination, and delivery of care. A central component of this model is the therapeutic relationship between the patient and the multidisciplinary team of healthcare professionals ( Figure 2). In patient-centred AF management, patients are seen not as passive recipients of health services, but as active participants who work as partners alongside healthcare professionals. Patientcentred AF management requires integration of all aspects of AF management. This includes symptom control, lifestyle recommendations, psychosocial support, and management of comorbidities, alongside optimal medical treatment consisting of pharmacotherapy, cardioversion, and interventional or surgical ablation ( Table 9). Services should be designed to ensure that all patients have access to an organized model of AF management, including tertiary care specialist services when indicated (see Supplementary data online, Table S1, Evidence Table 4 and Additional Evidence Table S3). It is equally important to maintain pathways for patients to promptly re-engage with specialist services when their condition alters.

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----- Start of picture text ----- Atrial fibrillation C E Comorbidity Evaluation and and risk factor A R dynamic management reassessment Lifestyle help Avoid stroke and Reduce symptoms Primary care Primary care thromboembolism by rate and Cardiology Cardiology rhythm control Pharmacy Internal medicine Nursing Nursing care Primary care Primary care Family/carers Other Cardiology Cardiology e-Health Neurology Electrophysiology Nursing care Cardiac surgeons Anticoagulation e-Health services e-Health -c d A t e e n F n t - e a t C i r t r g e A a e P d int RE ----- End of picture text -----

Figure 2 Multidisciplinary approach to AF management. Principal caregivers are involved in the community and hospital settings to provide optimal, patient-centred care for patients living with AF. AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment.

Table 9 Achieving patient-centred AF management

Components of patient-centred AF management:

  • Optimal treatment according to the AF-CARE pathway, which includes: ∘ [C] Comorbidity and risk factor management ∘ [A] Avoid stroke and thromboembolism

  • ∘ [R] Reduce symptoms by rate and rhythm control

  • ∘ [E] Evaluation and dynamic reassessment

  • • Lifestyle recommendations • Psychosocial support

  • Education and awareness for patients, family members, and caregivers

  • • Seamless co-ordination between primary care and specialized AF care How to implement patient-centred AF management: • Shared decision-making • Multidisciplinary team approach • Patient education and empowerment, with emphasis on self-care • Structured educational programmes for healthcare professionals • Technology support (e-Health, m-Health, telemedicine)[a]

AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment. ae-Health refers to healthcare services provided using electronic methods; m-Health, refers to healthcare services supported by mobile devices; and telemedicine refers to remote diagnosis or treatment supported by telecommunications technology.

4.1.2. Education and shared decision-making

Clear advice about the rationale for treatments, the possibility of treatment modification, and shared decision-making can help patients live with AF (see Supplementary data online, Table S2). An open and effective relationship between the patient and the healthcare professional is critical, with shared decision-making found to improve outcomes for OAC and arrhythmia management. In using a shared approach, both the clinician and patient are involved in the decision-making process (to the extent that the patient prefers). Information is shared in both directions. Furthermore, both the clinician and the patient express their preferences and discuss the options. Of the potential treatment decisions, no treatment is also a possibility. There are several toolkits available to facilitate this, although most are focused on anticoagulation decisions. For example, the Shared Decision-Making Toolkit (http://afibguide.com, http://afibguide.com/clinician) and the Successful Intravenous Cardioversion for Atrial Fibrillation (SIC-AF) score have been shown to reduce decisional conflict compared with usual care in patients with AF. Patient-support organizations can also make an important contribution to providing understandable and actionable knowledge about AF and its treatments (e.g. local support groups and international charities, such as http://afa-international.org). As AF is a chronic or recurrent disease in most patients, education is central to empower patients, their families, and caregivers.

ESC Guidelines

4.1.3. Education of healthcare professionals

Gaps in knowledge and skills across all domains of AF care are consistently described among cardiologists, neurologists, internal medicine specialists, emergency physicians, general practitioners, nurses, and allied health practitioners. Healthcare professionals involved in multidisciplinary AF management should have a knowledge of all available options for diagnosis and treatment. In the STEEER-AF trial, real-world adherence to clinical practice guidelines for AF across six ESC countries was poor. These findings highlight the critical need for appropriate training and education of healthcare professionals.

Specifically targeted education for healthcare professionals can increase knowledge and lead to more appropriate use of OAC for prevention of thromboembolism. However, educational interventions for healthcare providers are often not enough to sustainably impact behaviour. Other tools may be needed, such as active feedback, clinical decision support tools, expert consultation, or e-Health learning.

4.1.4. Inclusive management of AF

Evidence is growing on differences in AF incidence, prevalence, risk factors, comorbidities, and outcomes according to gender. Women diagnosed with AF are generally older, have more hypertension and heart failure with preserved ejection fraction (HFpEF), and have less diagnosed coronary artery disease (CAD). Registry studies have reported differences in outcomes, with higher morbidity and mortality in women, although these may be confounded by age and comorbidity burden. Women with AF may be more symptomatic, and report a lower quality of life. It is unclear whether this is related to delayed medical assessment in women, or whether there are genuine sex differences. Despite a higher symptom load, women are less likely to undergo AF ablation than men, even though antiarrhythmic drug therapy seems to be associated with more proarrhythmic events in women. These observations call for more research on gender differences in order to prevent disparities and inequality in care. Other diversity aspects such as age, race, ethnicity, and transgender issues, as well as social determinants (including socioeconomic status, disability, education level, health literacy, and rural/urban location) are important contributors to inequality that should be actively considered to improve patient outcomes.

4.2. Principles of AF-CARE

The 2024 ESC Guidelines for the management of AF have compiled and evolved past approaches to create principles of management to aid implementation of these guidelines, and hence improve patient care and outcomes. There is growing evidence that clinical support tools can aid best-practice management, with the caveat that any tool is a guide only, and that all patients require personalized attention. The AF-CARE approach covers many established principles in the management of AF, but does so in a systematic, time-orientated format with four essential treatment pillars ( Figure 3; central illustration). Joint management with each patient forms the starting point of the AF-CARE approach. Notably, it takes account of the growing evidence base that therapies for AF are most effective when associated health conditions are addressed. A careful search for these comorbidities and risk factors [C] is critical and should be applied in all patients with a diagnosis of AF. Avoidance of stroke and thromboembolism [A] in patients with risk

factors is considered next, focused on appropriate use of anticoagulant therapy. Reducing AF-related symptoms and morbidity by effective use of heart rate and rhythm control [R] is then applied, which in selected patients may also reduce hospitalization or improve prognosis. The potential benefit of rhythm control, accompanied by consideration of all risks involved, should be considered in all patients at each contact point with healthcare professionals. As AF, and its related comorbidities, changes over time, different levels of evaluation [E] and re-evaluation are required in each patient, and these approaches should be dynamic. Due to the wide variability in response to therapy, and the changing pathophysiology of AF as age and comorbidities advance, reassessment should be built into the standard care pathway to prevent adverse outcomes for patients and improve population health.

AF-CARE builds upon prior ESC Guidelines, e.g. the five-step outcome-focused integrated approach in the 2016 ESC Guidelines for the management of AF, and the AF Better Care (ABC) pathway in the 2020 ESC Guidelines for the diagnosis and management of AF. The reorganization into AF-CARE was based on the parallel developments in new approaches and technologies (in particular for rhythm control), with new evidence consistently suggesting that all aspects of AF management are more effective when comorbidities and risk factors have been considered. This includes management relating to symptom benefit, improving prognosis, prevention of thromboembolism, and the response to rate and rhythm control strategies. AF-CARE makes explicit the need for individualized evaluation and follow-up in every patient, with an active approach that accounts for how patients, their AF, and associated comorbidities change over time. The AF-CARE principles have been applied to different patient pathways for ease of implementation into routine clinical care. This includes the management of firstdiagnosed AF ( Figure 4), paroxysmal AF ( Figure 5), persistent AF ( Figure 6), and permanent AF ( Figure 7).

Recommendation Table 4 — Recommendations for patient-centred care and education (see also Evidence Table 4)

RecommendationClassaLevelb© ESC 2024
Education directed to patients, family members, caregivers, and healthcare professionals is recommended to optimize shared decision-making, facilitating open discussion of both the beneft and risk associated with each treatment option.94,103IC
Access to patient-centred management according to the AF-CARE principles is recommended in all patients with AF, regardless of gender, ethnicity, and socioeconomic status, to ensure equality in healthcare provision and improve outcomes.IC
Patient-centred AF management with a multidisciplinary approach should be considered in all patients with AF to optimize management and improve outcomes.79,121–124IIaB

AF, atrial fibrillation; AF-CARE, Atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment. aClass of recommendation. bLevel of evidence.

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----- Start of picture text ----- AF Equality in healthcare provision (gender, ethnicity, socioeconomic) (Class I) Education for patients, families and healthcare professionals (Class I) C A R E Patient-centred AF management with a multidisciplinary approach (Class IIa) Comorbidity and risk factor management C Hypertension Heart failure Overweightor obese Obstructive sleepapnoea Alcohol Blood pressure Diuretics for Weight loss Management Reduce to 3 lowering treatment congestion (target 10%) [a] of OSA [a] drinks per week (Class I) (Class I) (Class I) (Class IIb) (Class I) Appropriate HFrEF Bariatric surgery Diabetes medical therapy if rhythm control [a] Exercise Other risk factors/ mellitus (Class I) (Class IIb) capacity comorbidities Effective SGLT2 inhibitors Tailored Identify and manage glycaemic control [a] exercise programme aggressively [a] (Class 1) (Class I) (Class I) (Class I) Avoid stroke and thromboembolism Risk of Use locally-validated A thrombo- risk score Choice of Assess Prevent embolism or CHA2DS2-VA anticoagulant bleeding risk bleeding anticoagulationStart oral OAC if CHA score = 2 or more2DS2-VA mechanical valve orUse DOAC, exceptmitral stenosis factors for bleedingAssess and manageall modifiable risk antiplatelets and OACfor stroke preventionDo not combine (Class I) (Class I) (Class I) (Class I) (Class III) Temporal pattern OAC if CHA2DS2-VA If VKA: Do not use risk Avoid antiplatelets of AF not relevant score = 1 Target INR 2.0–3.0; scores to withhold beyond 12 months (Class III) (Class IIa) (Class I) anticoagulation in OAC treated >70% INR range; (Class III) CCS/PVD Antiplatelet therapy not an alternative (Class IIa) (Class III) or switch to DOAC (Class III) (Class I) Reduce symptoms by rate and rhythm control See patient pathways for: R First-diagnosed AF Paroxysmal AF Persistent AF Permanent AF Consider: Rate control drugs Cardioversion Antiarrhythmic drugs Catheter ablation Endoscopic/hybrid ablation Surgical ablation Ablate and pace Evaluation and dynamic reassessment Re-evaluate when AF episodes or non-AF admissions E Regular re-evaluation: 6 months after presentation, and then at least annually or based on clinical need ECG, blood tests, Continue OAC Assess new and Stratify risk Check impact of AF Assess and manage ambulatory ECG,cardiac imaging, existing risk factors and comorbidities thromboembolismfor stroke and and after treatmentsymptoms before modifiable bleedingrisk factors despite rhythmcontrol if risk other imaging of thromboembolism as needed (Class I) (Class I) (Class I) (Class I) (Class I) ----- End of picture text -----

Figure 3 Central illustration. Patient pathway for AF-CARE (see Figures 4, 5, 6, and 7 for the [R] pathways for first-diagnosed, paroxysmal, persistent and permanent AF). AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; CCS, chronic coronary syndrome; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant; ECG, electrocardiogram; HFrEF, heart failure with reduced ejection fraction; INR, international normalized ratio of prothrombin time; OAC, oral anticoagulant; OSA, obstructive sleep apnoea; PVD, peripheral vascular disease; SGLT2, sodium-glucose cotransporter-2; VKA, vitamin K antagonist.[a] As part of a comprehensive management of cardiometabolic risk factors.

ESC Guidelines

----- Start of picture text ----- Patient with first-diagnosed AF Y Haemodynamically stable N Electrical cardioversion (Class I) Follow AF-CARE for [C] comorbidity and risk factor management & [A] avoid stroke and thromboembolism Initial rate control (Class I) Y LVEF ≤ 40% N Beta-blocker Beta-blocker, digoxin, or digoxin diltiazem or verapamil (Class I) (Class I) Combination Combination rate control therapy rate control therapy (Class IIa) (Class IIa) Cardioversion of symptomatic persistent AF (Class I) Wait-and-see if sinus rhythm restores spontaneously <48 h (Class IIa) ----- End of picture text -----

Figure 4 [R] Pathway for patients with first-diagnosed AF. AF, atrial fibrillation; AF-CARE, Atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; LVEF, left ventricular ejection fraction. After following the pathway for first-diagnosed AF, patients with recurrent AF should enter the AF-CARE [R] pathway for paroxysmal, persistent, or permanent AF, depending on the type of their AF.

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----- Start of picture text ----- Patient with paroxysmal AF Follow AF-CARE for [C] comorbidity and risk factor management & [A] avoid stroke and thromboembolism Rate control target = resting heart rate <110 b.p.m. (lenient control), with stricter control with continuing symptoms (Class IIa) Y LVEF ≤ 40% N Beta-blocker Combination Beta-blocker, digoxin, Combination or digoxin rate control therapy diltiazem or verapamil rate control therapy (Class I) (Class IIa) (Class I) (Class IIa) Shared decision-making on rhythm control (Class I) Antiarrhythmic drug therapy Stable HFmrEF Absence HFrEF (LVEF 41–49%), or minimal heart (LVEF ≤ 40%) coronary heart disease, disease valvular heart disease Amiodarone or Dronedarone, flecainide Amiodarone Catheter ablation [a] dronedarone or propafenone (Class I) (Class I) (Class I) (Class I) Sotalol Sotalol (Class IIb) (Class IIb) Recurrence of AF symptoms Shared decision-making (Class I) If failed antiarrhythmic If failed catheter drug therapy ablation Catheter ablation Re-do catheter ablation Surgical/hybrid ablation Antiarrhythmic drug (Class I) (Class IIa) (Class IIb) therapy (see above) ----- End of picture text -----

Figure 5 [R] Pathway for patients with paroxysmal AF. AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; b.p.m., beats per minute; HFmrEF, heart failure with mildly reduced ejection fraction; HFrEF, Heart failure with reduced ejection fraction; LVEF, left ventricular ejection fraction.[a] In patients with HFrEF: Class I if high probability of tachycardia-induced cardiomyopathy; and Class IIa in selected patients to improve prognosis.

ESC Guidelines

----- Start of picture text ----- Patient with persistent AF Follow AF-CARE for [C] comorbidity and risk factor management & [A] avoid stroke and thromboembolism Rate control target = resting heart rate <110 b.p.m. (lenient control), with stricter control with continuing symptoms (Class IIa) Y LVEF ≤ 40% N Beta-blocker Combination Beta-blocker, digoxin, Combination or digoxin rate control therapy diltiazem or verapamil rate control therapy (Class I) (Class IIa) (Class I) (Class IIa) Shared decision-making on rhythm control (Class I) Haemodynamic instability (Class I) Electrical Part of rhythm control strategy (Class IIa) cardioversion Clarify benefit from sinus rhythm (Class IIa) Antiarrhythmic drug therapy Stable HFmrEF Absence HFrEF (LVEF 41–49%), or minimal heart (LVEF ≤ 40%) coronary heart disease, disease valvular heart disease Amiodarone or Dronedarone, flecainide Amiodarone Catheter ablation [a] dronedarone or propafenone (Class I) (Class IIb) (Class I) (Class I) Sotalol Sotalol (Class IIb) (Class IIb) Recurrence of AF symptoms Shared decision-making, considering all rhythm control options (Class I) If failed antiarrhythmic If failed catheter drug therapy ablation Catheter Endoscopic/ Re-do Endoscopic Antiarrhythmic Consider ablation hybrid ablation catheter hybrid or drug therapy rate control (Class I) (Class IIa) ablation surgical ablation (see above) strategy ----- End of picture text -----

Figure 6 [R] Pathway for patients with persistent AF. AF, atrial fibrillation; AF-CARE, Atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; b.p.m., beats per minute; HFmrEF, heart failure with mildly reduced ejection fraction; HFrEF, heart failure with reduced ejection fraction; LVEF, left ventricular ejection fraction.[a] In patients with HFrEF: Class I if high probability of tachycardia-induced cardiomyopathy; and Class IIa in selected patients to improve prognosis.

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----- Start of picture text ----- Patient with permanent AF Follow AF-CARE for [C] comorbidity and risk factor management & [A] avoid stroke and thromboembolism Severely symptomatic and LVEF ≤ 40% LVEF > 40% HF hospitalization Initiate beta-blocker, Initiate beta-blocker Atrioventricular node digoxin, diltiazem or digoxin ablation and CRT or verapamil (Class I) (Class IIa) (Class I) Evaluation and dynamic Evaluation and dynamic reassessment reassessment Rate control target = resting Rate control target = resting heart rate <110 b.p.m. heart rate <110 b.p.m. (lenient control), Y (lenient control), Y with stricter control with stricter control with continuing symptoms with continuing symptoms (Class IIa) (Class IIa) N N Combination beta-blocker Combination Continue beta-blocker, Continue beta-blocker with digoxin, or diltiazem/ beta-blocker with digoxin, digoxin, diltiazem or digoxin verapamil with digoxin; avoiding bradycardia or verapamil (Class I) avoiding bradycardia (Class IIa) (Class I) (Class IIa) [a] Rate control target = resting heart rate <110 b.p.m. (lenient control), with stricter control with continuing symptoms (Class IIa) N Y Continue review and follow-up as per Intensify rate control therapy under AF-CARE approach observation Evaluation for atrioventricular node ablation in combination with pacemaker (Class IIa) ----- End of picture text -----

Figure 7 [R] Pathway for patients with permanent AF. AF, atrial fibrillation; AF-CARE, Atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; b.p.m., beats per minute; CRT, cardiac resynchronization therapy; HF, heart failure; LVEF, left ventricular ejection fraction. Permanent AF is a shared decision made between the patient and physician that no further attempts at restoration of sinus rhythm are planned.[a] Note that the combination of betablockers with diltiazem or verapamil should only be used under specialist advice, and monitored with an ambulatory ECG to check for bradycardia.

ESC Guidelines

5. [C] Comorbidity and risk factor management

A broad array of comorbidities are associated with the recurrence and progression of AF. Managing comorbidities is also central to the success of other aspects of care for patients with AF, with evidence available for hypertension, heart failure, diabetes mellitus, obesity, and sleep apnoea, along with lifestyle changes that improve physical

activity and reduce alcohol intake (see Supplementary data online, Additional Evidence Table S4). Identification and treatment of these comorbidities and clusters of risk factors form an important part of effective AF-CARE ( Figure 8), with the evidence outlined in the rest of this section highlighting where management can improve patient outcomes or prevent AF recurrence. Many of these factors (and more) are also associated with incident AF (see Section 10).

----- Start of picture text ----- Shared Focus on key decision-making risk factors Setting individual Behavioural change targets for comorbidities and risk factors Achievable Provide information targets without overloading Suggested approach and targets Integrated Identify and actively manage all risk factors and comorbidities management (Class I) Blood pressure treatment with target 120–129 mmHg / Hypertension 70–79 mmHg in most adults (or as low as reasonably achievable) (Class I) Key targets Heart Optimize with diuretics to alleviate congestion appropriate, failure medical therapy for reduced LVEF, and SGLT2 inhibitors for all LVEF (Class I) Diabetes Effective glycaemic control with diet/medication(s) (Class I) Weight loss programme if overweight /obese, Obesity with 10% or more weight loss (Class I) Management of obstructive sleep apnoea to minimize Sleep apnoeic episodes apnoea (Class IIb) Tailored exercise programme aiming for regular Physical moderate/vigorous activity activity (Class I) Alcohol Reduce alcohol consumption to 3 or less standard intake drinks per week (Class I) ----- End of picture text -----

Figure 8 Management of key comorbidities to reduce AF recurrence. LVEF, left ventricular ejection fraction; SGLT2, sodium-glucose cotransporter-2.

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Recommendation Table 5 — Recommendations for comorbidity and risk factor management in AF (see also Evidence Table 5)

RecommendationClassaLevelb© ESC 2024
Identifcation and management of risk factors and comorbidities is recommended as an integral part of AF care.39,125–127IB
Blood pressure lowering treatment is recommended in patients with AF and hypertension to reduce recurrence and progression of AF and prevent adverse cardiovascular events.126–130IB
Diuretics are recommended in patients with AF, HF, and congestion to alleviate symptoms and facilitate better AF management.IC
Appropriate medical therapy for HF is recommended in AF patients with HF and impaired LVEF to reduce symptoms and/or HF hospitalization and prevent AF recurrence.131–137IB
Sodium-glucose cotransporter-2 inhibitors are recommended for patients with HF and AF regardless of left ventricular ejection fraction to reduce the risk of HF hospitalization and cardiovascular death.136,138–140IA
Effective glycaemic control is recommended as part of comprehensive risk factor management in individuals with diabetes mellitus and AF, to reduce burden, recurrence, and progression of AF.IC
Weight loss is recommended as part of comprehensive risk factor management in overweight and obese individuals with AF to reduce symptoms and AF burden, with a target of 10% or more reduction in body weight.125–128IB
A tailored exercise programme is recommended in individuals with paroxysmal or persistent AF to improve cardiorespiratory ftness and reduce AF recurrence.141–146IB
Reducing alcohol consumption to≤3 standard drinks (≤30 grams of alcohol) per week is recommended as part of comprehensive risk factor management to reduce AF recurrence.126,127,147IB
Bariatric surgery may be considered in conjunction with lifestyle changes and medical management in individuals with AF and body mass index≥40 kg/m2 c where a rhythm control strategy is planned, to reduce recurrence and progression of AF.IIbC
Management of obstructive sleep apnoea may be considered as part of a comprehensive management of risk factors in individuals with AF to reduce recurrence and progression.126–128,148–154IIbB
When screening for obstructive sleep apnoea in individuals with AF, using only symptom-based questionnaires is not recommended.155–157IIIB

AF, atrial fibrillation; HF, heart failure; LVEF, left ventricular ejection fraction. aClass of recommendation. bLevel of evidence. cOr body mass index ≥35 kg/m2 with obesity-related complications.

5.1. Hypertension

Hypertension in patients with AF is associated with an increased risk of stroke, heart failure, major bleeding, and cardiovascular mortality. The target for treated systolic blood pressure (BP) in most adults is 120–129 mmHg. Where BP-lowering treatment is poorly tolerated, clinically significant frailty exists or the patient’s age is 85 years or older, a more lenient target of <140 mmHg is acceptable or ‘as low as reasonably achievable’. On-treatment diastolic BP should ideally be 70–79 mmHg. In an individual participant data meta-analysis of 22 randomized trials reporting baseline AF, a 5 mmHg reduction in systolic BP reduced the risk of major cardiovascular events by 9% (HR, 0.91; 95% CI, 0.83–1.00), with identical effect in patients with AF or sinus rhythm.

In individuals with AF, hypertension often coexists with other modifiable and non-modifiable risk factors that all contribute to recurrence of AF, readmission to hospital, and ongoing symptoms after rhythm control. Optimal control of blood pressure should be considered an essential component of treating AF and undertaken within a strategy of comprehensive risk factor management. Although the majority of research has focused on clinical outcomes, limited comparative data on hypertension medication suggests that use of angiotensin-converting enzyme (ACE) inhibitors or angiotensin receptor blockers (ARB) may be superior for prevention of recurrent AF.

5.2. Heart failure

Heart failure is a key determinant of prognosis in patients with AF, as

well as an important factor associated with recurrence and progression of AF. During 30 years of follow-up in the Framingham cohort, 57% of those with new heart failure had concomitant AF, and 37% of those with new AF had heart failure. Numerous cardiovascular and non-cardiovascular conditions impact the development of both AF and heart failure, leading to the common pathway of atrial cardiomyopathy. In patients with acute heart failure attending the emergency department, AF is one of the most prevalent triggering factors of the episode. The development of heart failure in patients with AF is associated with a two-fold increase in stroke and thromboembolism, even after anticoagulation, and 25% higher all-cause mortality. Prognosis may be affected by left ventricular ejection fraction (LVEF), with the rate of death highest with the combination of AF and heart failure with reduced ejection fraction (HFrEF) (LVEF ≤ 40%), as compared with AF and HFpEF (LVEF ≥ 50%). However, rates of stroke and incident heart failure hospitalization are similar regardless of LVEF. Due to how common concomitant AF and heart failure are in clinical practice, strategies to improve outcomes in these patients are detailed within each component of the AF-CARE pathway. However, it is also critical that heart failure itself is managed appropriately in patients with AF to prevent avoidable adverse events.

Optimization of heart failure management should follow current ESC Guidelines: 2023 Focused Update of the 2021 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure. Achieving euvolaemia with diuretics is an important first step that not only manages the heart failure component, but can also facilitate better control of heart rate in AF. For HFrEF, it should be highlighted that many older guideline-recommended therapies lack specific evidence for benefit in patients with coexisting AF. No trial data are available in this context for ACE inhibitors, there are conflicting data on ARBs, and an individual patient-level analysis of RCTs found no

ESC Guidelines

difference between beta-blockers and placebo for all-cause mortality in HFrEF with AF. However, these drugs have clear proof of safety and there may be other indications for these therapies beyond prognosis, including comorbidity management and symptom improvement. These and other therapies may also have dual functions, for example, beta-blockers or digoxin for rate control of AF, in addition to improving heart failure metrics and reducing hospitalization. More recent additions to HFrEF management, such as eplerenone, sacubitrilvalsartan, and sodium-glucose cotransporter-2 (SGLT2) inhibitors, had substantial numbers of patients with AF enrolled in RCTs, with no evidence that AF status affected their ability to reduce cardiovascular mortality/heart failure hospitalization. Cardiac resynchronization therapy (CRT) in the context of HFrEF and AF is discussed in detail in the 2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy, with an important focus on ensuring effective biventricular pacing (with a low threshold for considering atrioventricular node ablation). Patients who have heart failure with mildly reduced ejection fraction (HFmrEF) (LVEF 41%–49%) and AF should generally be treated according to guidance for HFrEF, albeit with limited evidence to date in AF. For treatment of HFpEF and AF, pre-specified subgroup data on AF from multiple large trials show that the SGLT2 inhibitors dapagliflozin, empaglifozin, and sotagliflozin are effective in improving prognosis.

Appropriate management of heart failure has the potential to reduce recurrence of AF, e.g. by reducing adverse atrial and ventricular myocardial remodelling, but there are limited data for specific therapies. In the Routine versus Aggressive upstream rhythm Control for prevention of Early AF in heart failure (RACE 3) trial, combined management of mild-to-moderate heart failure with ACE inhibitors/ARBs, mineralocorticoid receptor antagonists, statins, and cardiac rehabilitation increased the maintenance of sinus rhythm on ambulatory monitoring at 12 months. This benefit was not preserved at the 5 year follow-up, although this may have been confounded by the lack of ongoing intervention beyond the initial 12 months.

5.3. Type 2 diabetes mellitus

Diabetes mellitus is present in around 25% of patients with AF. Patients with both diabetes and AF have a worse prognosis, with increased healthcare utilization and excess mortality and cardiovascular events. The prevalence and incidence of AF and type 2 diabetes are widely increasing, thus making the association of these two conditions a public health challenge. Moreover, diabetes is a major factor influencing thromboembolic risk. Following catheter ablation of AF, diabetes and higher HbA1c are associated with increased length of stay and a greater recurrence of AF.

In cohort studies, the management of diabetes mellitus as part of comprehensive risk factor management has been associated with reduced AF symptoms, burden, reversal of the type of AF (from persistent to paroxysmal or no AF), and improved maintenance of sinus rhythm. However, robust evidence is limited, and individual glucose-lowering medications have had variable effects on AF. There are emerging data of the use of SGLT2 and glucagon-like peptide-1 antagonists in patients with diabetes and AF that may impact on treatment choice in the near future. Importantly, diabetes frequently coexists with multiple risk factors in patients with AF, and a comprehensive approach to management is required. Further details are

provided in the 2023 ESC Guidelines for the management of cardiovascular disease in patients with diabetes.

5.4. Obesity

Obesity frequently coexists with other risk factors that have been independently associated with the development of AF. Obesity (body mass index [BMI] ≥30 kg/m) and being overweight (BMI >25 kg/m) are associated with a greater risk of recurrent atrial arrhythmias after AF ablation (13% increase for every 5 kg/m[2 ] higher BMI). In the setting of comprehensive risk factor management, weight loss of ≥10% in overweight and obese individuals with AF has been associated with reduced AF symptoms and AF burden in an RCT (aiming for BMI <27 kg/m). Cohort studies have also shown a graded response to maintenance of sinus rhythm, improved ablation outcomes, and reversal of the type of AF commensurate with the degree of weight loss and risk factor management. However, in the Supervised Obesity Reduction Trial for AF Ablation Patients (SORT-AF) randomized trial in AF ablation patients, a sole weight loss intervention that achieved 4% loss in weight over 12 months did not impact ablation outcomes. This is consistent with the findings in LEGACY (Long-Term Effect of Goal directed weight management on Atrial Fibrillation Cohort: a 5 Year follow-up study) that showed that weight loss of ≤3% had no impact on AF recurrence. Observational studies have raised the possibility of a point of no return in terms of the benefit of weight loss, but also the possibility that bariatric surgery can improve symptoms and reduce AF recurrence.

5.5. Obstructive sleep apnoea

Obstructive sleep apnoea (OSA) is a highly prevalent condition, particularly in patients with AF. Optimal screening tools in the AF population are still under evaluation, although it may be reasonable to screen for OSA in patients where a rhythm control strategy is being pursued. Polysomnography or home sleep apnoea testing are suggested in preference to screening questionnaires. Questionnaires assessing daytime sleepiness are poor predictors of moderate-to-severe OSA. Which parameter should be used to focus on risk of AF in patients with OSA, and to guide OSA treatment in patients with AF, is still unclear.

Observational studies have suggested that individuals with OSA not treated with continuous positive airway pressure (CPAP) respond poorly to treatments for AF, with an increased risk of recurrence after cardioversion or ablation. Conversely, OSA patients treated with CPAP seem to mitigate their propensity toward developing AF. A small randomized trial of CPAP vs. no therapy demonstrated reversal of atrial remodelling in individuals with moderate OSA. However, other small RCTs have failed to show a benefit of CPAP therapy on ablation outcomes or post-cardioversion. Data on the cardiovascular mortality benefit of CPAP therapy in OSA are inconclusive.

5.6. Physical inactivity

Reduced cardiorespiratory fitness frequently coexists with other modifiable risk factors and has been associated with a greater recurrence of AF after catheter ablation. Better cardiorespiratory fitness has a demonstrated inverse relationship to AF burden in both middle-aged and elderly people. Small RCTs, meta-analyses, and observational

ESC Guidelines 3341

cohorts have shown that regular aerobic exercise may also improve AF-related symptoms, quality of life, and exercise capacity. Better cardiorespiratory fitness and a gain in cardiorespiratory fitness over time are associated with a greater reduction in AF burden and improved maintenance of sinus rhythm.

5.7. Alcohol excess

Alcohol consumption can increase the risk of adverse events in patients with AF, such as thromboembolism, death, or AF-related hospitalization. Alcohol is associated with an increased risk of ischaemic stroke in patients with newly diagnosed AF, and alcohol abstinence after AF diagnosis can reduce the risk of ischaemic stroke. In patients receiving OAC, alcohol excess is associated with a greater risk of bleeding, mediated by poor adherence, alcohol–drug interactions, liver disease, and variceal bleeding.

Alcohol consumption is associated with a dose-dependent increase in the recurrence of AF after catheter ablation. In an RCT among regular non-binge drinkers with AF, the goal of abstinence led to a significant reduction in AF recurrence and burden; alcohol intake was reduced from 16.8 to 2.1 standard drinks per week (≤30 grams or 3 standard drinks of alcohol) in the intervention arm, with 61% attaining abstinence. In observational data of patients undergoing catheter ablation, reduction of consumption to ≤7 standard drinks (≤70 grams of alcohol) per week was associated with improved maintenance of sinus rhythm.

6. [A] Avoid stroke and thromboembolism

6.1. Initiating oral anticoagulation

Atrial fibrillation is a major risk factor for thromboembolism, irrespective of whether it is paroxysmal, persistent, or permanent. Left untreated, and dependent on other patient-specific factors, the risk of ischaemic stroke in AF is increased five-fold, and one in every five strokes is associated with AF. The default approach should therefore be to provide OAC to all eligible patients, except those at low risk of incident stroke or thromboembolism. The effectiveness of OAC to prevent ischaemic stroke in patients with AF is well established. Antiplatelet drugs alone (aspirin, or aspirin in combination with clopidogrel) are not recommended for stroke prevention in AF.

6.1.1. Decision support for anticoagulation in AF

Tools have been developed to enable easier implementation of OAC in patients with clinical AF. The majority of OAC clinical trials have used variations of the CHADS2 score to indicate those at risk (with points for chronic heart failure, hypertension, age, diabetes, and 2 points for prior stroke/transient ischaemic attack [TIA]). Although most available stroke risk scores are simple and practical, the predictive value of scores is generally modest (see Supplementary data online, Table S3). Classification and discrimination of adverse events is relatively poor for all scores and hence the benefit of using them to select patients for OAC is unclear. There is also considerable variation in the definition of risk factors across countries, and a lack of evidence from clinical trials on the ability of stroke risk scoring to enhance clinical practice. This guideline continues to provide a

Class IA recommendation for the use of OAC in patients at risk of thromboembolism. However, in the absence of strong evidence for how to apply risk scores in real-world patients, this has been separated from the use of any particular risk score. This is also in line with regulatory approvals for direct oral anticoagulants (DOACs), which do not stipulate risk scores or numerical thresholds.

Substantive changes have occurred in the decades since these risk scores were developed in regards to population-level risk factor profiles, therapies, and targets. Historical scores do not take into account parameters that have been associated with thromboembolism in contemporary cohorts, such as cancer, chronic kidney disease (CKD), ethnicity, and a range of circulating biomarkers (including troponin and B-type natriuretic peptide [BNP]). As an example, for CKD there is a correlation between decreasing glomerular filtration rate and proteinuria with stroke risk, and cohort data suggest a twofold increased risk of ischaemic stroke and mortality in AF patients with CKD vs. without. Other factors, such as atrial enlargement, hyperlipidaemia, smoking, and obesity, have been identified in specific cohort studies as additional risk factors for ischaemic stroke in AF. Biomarkers, such as troponin, natriuretic peptides, growth differentiation factor-15, cystatin C, and interleukin-6, can also indicate residual stroke risk among anticoagulated AF patients. Biomarker-guided stroke prevention is currently being evaluated in an ongoing RCT (NCT03753490). Until further validation within RCTs is available, this task force continues to support using simple clinical classification for implementation of OAC. Clinicians should use tools that have been validated in their local population and take an individualized approach to thromboembolic risk stratification that considers the full range of each patient’s specific risk factors. The absolute risk level at which to start OAC in individual patients cannot be estimated from populationlevel studies. It will vary depending on how those factors interact with other medical issues, and the degree of risk acceptable or tolerated by that person. In general, most of the available risk scores have a threshold of 0.6%–1.0% per annum of thromboembolic events for clinical AF to warrant OAC prescription.

Across Europe, the most popular risk score is CHA2DS2–VASc, giving points for congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/TIA/thromboembolism (2 points), vascular disease, age 65–74 years and female sex. However, implementation has varied in terms of gender. Female sex is an age-dependent stroke risk modifier rather than a risk factor per se. The inclusion of gender complicates clinical practice both for healthcare professionals and patients. It also omits individuals who identify as non-binary, transgender, or are undergoing sex hormone therapy. Previous guidelines from the ESC (and globally) have not actually used CHA2DS2-VASc; instead providing different score levels for women and men with AF to qualify for OAC. Hence, CHA2DS2-VA (excluding gender) has effectively been in place ( Table 10). This task force proposes, in the absence of other locally validated alternatives, that clinicians and patients should use the CHA2DS2-VA score to assist in decisions on OAC therapy (i.e. without a criterion for birth sex or gender). Pending further trials in lower risk patients (NCT04700826, NCT02387229), OAC are recommended in those with a CHA2DS2-VA score of 2 or more and should be considered in those with a CHA2DS2-VA score of 1, following a patient-centred and shared care approach. Healthcare professionals should take care to assess for other thromboembolic risk factors that may also indicate the need for OAC prescription.

ESC Guidelines

Recommendation Table 6**— Recommendations to** assess and manage thromboembolic risk in AF (see also Evidence Table 6) Recommendations Classa Levelb Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.239,240 I A A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. I C Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.270–276 I B Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.277–280 I B Continued A CHA2DS2-VA score of 1 should be considered an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. IIa C Direct oral anticoagulant therapy may be considered in patients with asymptomatic device-detected subclinical AF and elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism, excluding patients at high risk of bleeding.281,282 IIb B Antiplatelet therapy is not recommended as an alternative to anticoagulation in patients with AF to prevent ischaemic stroke and thromboembolism.242,283 III A Using the temporal pattern of clinical AF (paroxysmal, persistent, or permanent) is not recommended to determine the need for oral anticoagulation.284,285 III B © ESC 2024 AF, atrial fbrillation; CHA2DS2-VA, congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant. aClass of recommendation. bLevel of evidence. Table 10Updated defnitions for the CHA2DS2-VA score CHA2DS2-VA component Defnition and comments Points awardeda C Chronic heart failure Symptoms and signs of heart failure (irrespective of LVEF, thus including HFpEF, HFmrEF, and HFrEF), or the presence of asymptomatic LVEF≤40%.261–263 1 H Hypertension Resting blood pressure>140/90 mmHg on at least two occasions, or current antihypertensive treatment. The optimal BP target associated with lowest risk of major cardiovascular events is 120–129/70–79 mmHg (or keep as low as reasonably achievable).162,264 1 A Age 75 years or above Age is an independent determinant of ischaemic stroke risk.265 Age-related risk is a continuum, but for reasons of practicality, two points are given for age≥75 years. 2 D Diabetes mellitus Diabetes mellitus (type 1 or type 2), as defned by currently accepted criteria,266 or treatment with glucose lowering therapy. 1 S Prior stroke, TIA, or arterial thromboembolism Previous thromboembolism is associated with highly elevated risk of recurrence and therefore weighted 2 points. 2 V Vascular disease Coronary artery disease, including prior myocardial infarction, angina, history of coronary revascularization (surgical or percutaneous), and signifcant CAD on angiography or cardiac imaging.267 OR Peripheral vascular disease, including: intermittent claudication, previous revascularization for PVD, percutaneous or surgical intervention on the abdominal aorta, and complex aortic plaque on imaging (defned as features of mobility, ulceration, pedunculation, or thickness≥4 mm).268,269 1 A Age 65–74 years 1 point is given for age between 65 and 74 years. 1 © ESC 2024Recommendation Table 6**— Recommendations to** assess and manage thromboembolic risk in AF (see also Evidence Table 6) Recommendations Classa Levelb Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.239,240 I A A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. I C Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.270–276 I B Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.277–280 I B Continued A CHA2DS2-VA score of 1 should be considered an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. IIa C Direct oral anticoagulant therapy may be considered in patients with asymptomatic device-detected subclinical AF and elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism, excluding patients at high risk of bleeding.281,282 IIb B Antiplatelet therapy is not recommended as an alternative to anticoagulation in patients with AF to prevent ischaemic stroke and thromboembolism.242,283 III A Using the temporal pattern of clinical AF (paroxysmal, persistent, or permanent) is not recommended to determine the need for oral anticoagulation.284,285 III B © ESC 2024 AF, atrial fbrillation; CHA2DS2-VA, congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant. aClass of recommendation. bLevel of evidence. Table 10Updated defnitions for the CHA2DS2-VA score CHA2DS2-VA component Defnition and comments Points awardeda C Chronic heart failure Symptoms and signs of heart failure (irrespective of LVEF, thus including HFpEF, HFmrEF, and HFrEF), or the presence of asymptomatic LVEF≤40%.261–263 1 H Hypertension Resting blood pressure>140/90 mmHg on at least two occasions, or current antihypertensive treatment. The optimal BP target associated with lowest risk of major cardiovascular events is 120–129/70–79 mmHg (or keep as low as reasonably achievable).162,264 1 A Age 75 years or above Age is an independent determinant of ischaemic stroke risk.265 Age-related risk is a continuum, but for reasons of practicality, two points are given for age≥75 years. 2 D Diabetes mellitus Diabetes mellitus (type 1 or type 2), as defned by currently accepted criteria,266 or treatment with glucose lowering therapy. 1 S Prior stroke, TIA, or arterial thromboembolism Previous thromboembolism is associated with highly elevated risk of recurrence and therefore weighted 2 points. 2 V Vascular disease Coronary artery disease, including prior myocardial infarction, angina, history of coronary revascularization (surgical or percutaneous), and signifcant CAD on angiography or cardiac imaging.267 OR Peripheral vascular disease, including: intermittent claudication, previous revascularization for PVD, percutaneous or surgical intervention on the abdominal aorta, and complex aortic plaque on imaging (defned as features of mobility, ulceration, pedunculation, or thickness≥4 mm).268,269 1 A Age 65–74 years 1 point is given for age between 65 and 74 years. 1 © ESC 2024Recommendation Table 6**— Recommendations to** assess and manage thromboembolic risk in AF (see also Evidence Table 6) Recommendations Classa Levelb Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.239,240 I A A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. I C Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.270–276 I B Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.277–280 I B Continued A CHA2DS2-VA score of 1 should be considered an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. IIa C Direct oral anticoagulant therapy may be considered in patients with asymptomatic device-detected subclinical AF and elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism, excluding patients at high risk of bleeding.281,282 IIb B Antiplatelet therapy is not recommended as an alternative to anticoagulation in patients with AF to prevent ischaemic stroke and thromboembolism.242,283 III A Using the temporal pattern of clinical AF (paroxysmal, persistent, or permanent) is not recommended to determine the need for oral anticoagulation.284,285 III B © ESC 2024 AF, atrial fbrillation; CHA2DS2-VA, congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant. aClass of recommendation. bLevel of evidence. Table 10Updated defnitions for the CHA2DS2-VA score CHA2DS2-VA component Defnition and comments Points awardeda C Chronic heart failure Symptoms and signs of heart failure (irrespective of LVEF, thus including HFpEF, HFmrEF, and HFrEF), or the presence of asymptomatic LVEF≤40%.261–263 1 H Hypertension Resting blood pressure>140/90 mmHg on at least two occasions, or current antihypertensive treatment. The optimal BP target associated with lowest risk of major cardiovascular events is 120–129/70–79 mmHg (or keep as low as reasonably achievable).162,264 1 A Age 75 years or above Age is an independent determinant of ischaemic stroke risk.265 Age-related risk is a continuum, but for reasons of practicality, two points are given for age≥75 years. 2 D Diabetes mellitus Diabetes mellitus (type 1 or type 2), as defned by currently accepted criteria,266 or treatment with glucose lowering therapy. 1 S Prior stroke, TIA, or arterial thromboembolism Previous thromboembolism is associated with highly elevated risk of recurrence and therefore weighted 2 points. 2 V Vascular disease Coronary artery disease, including prior myocardial infarction, angina, history of coronary revascularization (surgical or percutaneous), and signifcant CAD on angiography or cardiac imaging.267 OR Peripheral vascular disease, including: intermittent claudication, previous revascularization for PVD, percutaneous or surgical intervention on the abdominal aorta, and complex aortic plaque on imaging (defned as features of mobility, ulceration, pedunculation, or thickness≥4 mm).268,269 1 A Age 65–74 years 1 point is given for age between 65 and 74 years. 1 © ESC 2024Recommendation Table 6**— Recommendations to** assess and manage thromboembolic risk in AF (see also Evidence Table 6) Recommendations Classa Levelb Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.239,240 I A A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. I C Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.270–276 I B Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.277–280 I B Continued A CHA2DS2-VA score of 1 should be considered an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation. IIa C Direct oral anticoagulant therapy may be considered in patients with asymptomatic device-detected subclinical AF and elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism, excluding patients at high risk of bleeding.281,282 IIb B Antiplatelet therapy is not recommended as an alternative to anticoagulation in patients with AF to prevent ischaemic stroke and thromboembolism.242,283 III A Using the temporal pattern of clinical AF (paroxysmal, persistent, or permanent) is not recommended to determine the need for oral anticoagulation.284,285 III B © ESC 2024 AF, atrial fbrillation; CHA2DS2-VA, congestive heart failure, hypertension, age≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant. aClass of recommendation. bLevel of evidence. Table 10Updated defnitions for the CHA2DS2-VA score CHA2DS2-VA component Defnition and comments Points awardeda C Chronic heart failure Symptoms and signs of heart failure (irrespective of LVEF, thus including HFpEF, HFmrEF, and HFrEF), or the presence of asymptomatic LVEF≤40%.261–263 1 H Hypertension Resting blood pressure>140/90 mmHg on at least two occasions, or current antihypertensive treatment. The optimal BP target associated with lowest risk of major cardiovascular events is 120–129/70–79 mmHg (or keep as low as reasonably achievable).162,264 1 A Age 75 years or above Age is an independent determinant of ischaemic stroke risk.265 Age-related risk is a continuum, but for reasons of practicality, two points are given for age≥75 years. 2 D Diabetes mellitus Diabetes mellitus (type 1 or type 2), as defned by currently accepted criteria,266 or treatment with glucose lowering therapy. 1 S Prior stroke, TIA, or arterial thromboembolism Previous thromboembolism is associated with highly elevated risk of recurrence and therefore weighted 2 points. 2 V Vascular disease Coronary artery disease, including prior myocardial infarction, angina, history of coronary revascularization (surgical or percutaneous), and signifcant CAD on angiography or cardiac imaging.267 OR Peripheral vascular disease, including: intermittent claudication, previous revascularization for PVD, percutaneous or surgical intervention on the abdominal aorta, and complex aortic plaque on imaging (defned as features of mobility, ulceration, pedunculation, or thickness≥4 mm).268,269 1 A Age 65–74 years 1 point is given for age between 65 and 74 years. 1 © ESC 2024
CHA2DS2-VA componentDefnition and commentsPoints awardeda
CChronic heart failureSymptoms and signs of heart failure (irrespective of LVEF, thus including HFpEF, HFmrEF, and HFrEF), or the presence of asymptomatic LVEF≤40%.261–2631
HHypertensionResting blood pressure>140/90 mmHg on at least two occasions, or current antihypertensive treatment. The optimal BP target associated with lowest risk of major cardiovascular events is 120–129/70–79 mmHg (or keep as low as reasonably achievable).162,2641
AAge 75 years or aboveAge is an independent determinant of ischaemic stroke risk.265 Age-related risk is a continuum, but for reasons of practicality, two points are given for age≥75 years.2
DDiabetes mellitusDiabetes mellitus (type 1 or type 2), as defned by currently accepted criteria,266 or treatment with glucose lowering therapy.1
SPrior stroke, TIA, or arterial thromboembolismPrevious thromboembolism is associated with highly elevated risk of recurrence and therefore weighted 2 points.2
VVascular diseaseCoronary artery disease, including prior myocardial infarction, angina, history of coronary revascularization (surgical or percutaneous), and signifcant CAD on angiography or cardiac imaging.267 OR Peripheral vascular disease, including: intermittent claudication, previous revascularization for PVD, percutaneous or surgical intervention on the abdominal aorta, and complex aortic plaque on imaging (defned as features of mobility, ulceration, pedunculation, or thickness≥4 mm).268,2691
AAge 65–74 years1 point is given for age between 65 and 74 years.1

BP, blood pressure; CAD, coronary artery disease; CHA2DS2-VA, chronic heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/ arterial thromboembolism (2 points), vascular disease, age 65–74 years; HFmrEF, heart failure with mildly reduced ejection fraction; HFpEF, heart failure with preserved ejection fraction; HFrEF, heart failure with reduced ejection fraction; LVEF, left ventricular ejection fraction; PVD, peripheral vascular disease. aIn addition to these factors, other markers that modify an individual’s risk for stroke and thromboembolism should be considered, including cancer, chronic kidney disease, ethnicity (black, Hispanic, Asian), biomarkers (troponin and BNP), and in specific groups, atrial enlargement, hyperlipidaemia, smoking, and obesity.

ESC Guidelines 3343

6.2. Oral anticoagulants

Vitamin K antagonists (VKA), predominantly warfarin but also other coumarin and indandione derivatives, have been the principal drugs to prevent thromboembolic events in the context of AF. As with any anticoagulant, a balance must be reached between preventing thromboembolism and preserving physiological haemostasis, with VKA-associated intracranial and other major haemorrhage the most critical limitation for acceptance of OAC. The global switch to DOACs as first-line therapy has changed this risk–benefit balance, allowing more widespread prescription with no need for routine monitoring (see Supplementary data online, Additional Evidence Tables S5–S7). This component of AF management may see substantive changes in the coming years, with a

number of factor XI inhibitors in various stages of clinical evaluation. A phase 2 trial of abelacimab in patients with AF has shown lower rates of bleeding compared with rivaroxaban; however, a phase 3 trial of asundexian was terminated early due to lack of efficacy against apixaban (NCT05643573), despite favourable phase 2 results. Regardless of the type of OAC prescribed, healthcare teams should be aware of the potential for interactions with other drugs, foods, and supplements, and incorporate this information into the education provided to patients and their carers. The list of potential interactions with VKA is broad, but there are also some common cardiovascular and non-cardiovascular drugs that interact with DOACs. Figure 9 highlights common and major interactions to consider for VKAs and DOACs.

----- Start of picture text ----- Vitamin K antagonist Direct oral anticoagulants oral anticoagulants Apixaban Dabigatran Edoxaban Rivaroxaban Avoid where Avoid where Avoid where Avoid where Avoid where possible possible possible possible possible NSAIDs Carbamazepine Dronedarone Carbamazepine Dronedarone Fluconazole Phenytoin Carbamazepine Phenytoin Carbamazepine Voriconazole Phenobarbital Phenytoin Phenobarbital Phenytoin Fluoxetine Rifampicin Rifampicin Rifampicin Phenobarbital Ritonavir Ritonavir Ritonavir Itraconazole Itraconazole Itraconazole Ketoconazole Ketoconazole Ketoconazole Posaconazole Cyclosporin Voriconazole Glecaprevir/pibrentasvir Rifampicin Tacrolimus Ritonavir Reduce warfarin Avoid or reduce Delay timing of Avoid or reduce Avoid if another dose apixaban dose if drugs and/or edoxaban dose interacting drug Amiodarone another interacting adjust dose therapy Metronidazole drug therapy Amiodarone Dronedarone Protease inhibitors Sulphonamides Posaconazole Ticagrelor Tyrosine kinase AllopurinolFluvastatin Protease inhibitorsVoriconazole QuinidineVerapamil Avoid or reduce inhibitors Gemfibrozil Apalutamide Clarithromycin edoxaban dose if Caution if renal Fluorouracil Enzalutamide Posaconazole another interacting function impaired drug therapy Increase warfarin Tyrosine kinaseinhibitors Cyclosporin CyclosporinVerapamil dose Itraconazole Clarithromycin Carbamazepine Ketoconazole Erythromycin Erythromycin Fluconazole Monitor INR carefully Dronedarone Statins Limit consumption Limit consumption Limit consumption Limit consumption Penicillin antibiotics Grapefruit juice Grapefruit juice Grapefruit juice Grapefruit juice Macrolide antibiotics St John’s wort St John’s wort St John’s wort St John’s wort Quinolone antibiotics Rifampicin Methotrexate Ritonavir Phenytoin Sodium valproate Tamoxifen Chemotherapies Limit consumption Alcohol Grapefruit/cranberry juice St John’s wort ----- End of picture text -----

Figure 9 Common drug interactions with oral anticoagulants. INR, international normalized ratio of prothrombin time; NSAID, non-steroidal antiinflammatory drug. This figure depicts only common or major interactions and is not an exhaustive list of all potential interactions. Please see the European Medicines Agency website or your local formulary for more information.

ESC Guidelines

Recommendation Table 7 — Recommendations for oral anticoagulation in AF (see also Evidence Table 7)

RecommendationsClassaLevelb© ESC 2024
Direct oral anticoagulants are recommended in preference to VKAs to prevent ischaemic stroke and thromboembolism, except in patients with mechanical heart valves or moderate-to-severe mitral stenosis.25–28,292–294IA
A target INR of 2.0–3.0 is recommended for patients with AF prescribed a VKA for stroke prevention to ensure safety and effectiveness.295–298IB
Switching to a DOAC is recommended for eligible patients that have failed to maintain an adequate time in therapeutic range on a VKA (TTR<70%) to prevent thromboembolism and intracranial haemorrhage.299–303IB
Keeping the time in therapeutic range above 70% should be considered in patients taking a VKA to ensure safety and effectiveness, with INR checks at appropriate frequency and patient-directed education and counselling.304–308IIaA
Maintaining VKA treatment rather than switching to a DOAC may be considered in patients aged≥75 years on clinically stable therapeutic VKA with polypharmacy to prevent excess bleeding risk.309IIbB
A reduced dose of DOAC therapy is not recommended, unless patients meet DOAC-specifc criteria,cto prevent underdosing and avoidable thromboembolic events.310–312IIIB

AF, atrial fibrillation; DOAC, direct oral anticoagulant; INR, international normalized ratio of prothrombin time; TTR, time in therapeutic range; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence. c See Table 11.

6.2.1. Direct oral anticoagulants

The DOACs (apixaban, dabigatran, edoxaban, and rivaroxaban) have all demonstrated at least non-inferior efficacy compared with warfarin for the prevention of thromboembolism, but with the added benefit of a 50% reduction in intracranial haemorrhage (ICH). Meta-analyses of individual data from 71 683 RCT patients showed that standard, full-dose DOAC treatment compared with warfarin reduces the risk of stroke or systemic embolism (HR, 0.81; 95% CI, 0.73–0.91), all-cause mortality (HR, 0.90; 95% CI, 0.85–0.95), and intracranial bleeding (HR, 0.48; 95% CI, 0.39–0.59), with no significant difference in other major bleeding (HR, 0.86; 95% CI, 0.73–1.00) and little or no between-trial heterogeneity. Post-marketing observational data on the effectiveness and safety of dabigatran, rivaroxaban, apixaban, and edoxaban vs. warfarin show general consistency with the respective phase 3 RCTs.

For patients undergoing cardioversion, three underpowered trials showed non-significantly lower rates of cardiovascular events with DOACs compared with warfarin. In meta-analysis of these 5203 patients predominantly undergoing electrical cardioversion, the composite of stroke, systemic embolism, myocardial infarction (MI), and cardiovascular death was significantly lower at 0.42% in patients randomized to a DOAC vs. 0.98% in those allocated VKA

(risk ratio, 0.42; 95% CI, 0.21–0.86; P =.017), with no heterogeneity between trials and no significant difference in major bleeding.

Specific patient subgroups show consistent benefit with DOACs vs. VKAs. For heart failure, major thromboembolic events were lower in DOAC-treated patients vs. warfarin in subgroup analysis of landmark RCTs, confirmed in large-scale real-world data. In a retrospective cohort of patients aged over 80 years, DOAC use was associated with a lower risk of ischaemic stroke, dementia, mortality, and major bleeding than warfarin, but this may be confounded by prescription bias.

Direct oral anticoagulants retain their efficacy and safety over VKAs in patients with mild-to-moderate CKD (creatinine clearance [CrCl] >30 mL/min), although specific dosing adjustments apply. In Europe, reduced doses of rivaroxaban, apixaban, and edoxaban are approved in patients with severe CKD (CrCl 15–29 mL/ min), although limited numbers of patients were included in the major RCTs against VKA. Dabigatran is more dependent on renal elimination and so is contraindicated with an estimated glomerular filtration rate <30 mL/min/1.73 m. Small trials have been performed in patients on haemodialysis, with two finding no difference between apixaban 2.5 mg twice daily and VKA for efficacy or safety outcomes, and one trial showing that rivaroxaban 10 mg led to significantly lower rates of cardiovascular events and major bleeding compared with VKA. Careful institution and regular follow-up are advised when instituting anticoagulants in any patient with impaired renal function (See Supplementary data online, Additional Evidence Table 8).

Direct oral anticoagulants as a class should be avoided in specific patient groups, such as those with mechanical heart valves or moderate-to-severe mitral stenosis. In patients with mechanical heart valves, an excess of thromboembolic and major bleeding events among patients on dabigatran therapy vs. VKA was observed, with an RCT terminated prematurely. A trial of apixaban vs. VKA after implantation of a mechanical aortic valve was also stopped due to excess thromboembolic events in the apixaban group. The restriction on DOAC use does not apply to bioprosthetic heart valves (including mitral) or after transcatheter aortic valve implantation, where DOACs can be used and trial data show non-inferiority for clinical events compared with VKAs. With regards to mitral stenosis, the DOAC vs. VKA trials excluded patients with moderate-to-severe disease. In 4531 randomized patients with rheumatic heart disease and AF, VKAs led to a lower rate of composite cardiovascular events and death than rivaroxaban, without a higher rate of bleeding. Eighty-two per cent of the patients included had a mitral valve area ≤2 cm, supporting the restriction of DOAC use in patients with moderate-to-severe mitral stenosis. Note that patients with other types of valve disease (mitral regurgitation and others) should preferentially be prescribed a DOAC, and the term ‘valvular’ AF is obsolete and should be avoided.

Inappropriate dose reductions for DOACs are frequent in clinical practice, but need to be avoided as they increase the risk of stroke without decreasing bleeding risk. Hence, DOAC therapy should be instituted according to the standard full dose as tested in phase 3 RCTs and approved by regulators ( Table 11). The prescribed dosage should consider the individual patient’s profile. Drug interactions need to be considered in all patients taking or planned for DOACs (see Figure 9 for common drug interactions). There is insufficient evidence currently to advise on routine laboratory testing for DOAC levels. However, in certain situations, measurement of DOAC levels (where available) may be helpful, such as severe bleeding, the need for urgent surgery, or thromboembolic events despite apparent DOAC compliance. Patients should always be involved in decision-making on anticoagulation, leading to better alignment with personal preferences that can help to increase understanding and adherence.

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Table 11 Recommended doses for direct oral anticoagulant therapy

DOACStandard full doseCriteria for dose reductionReduced dose only if criteria met© ESC 2024
Apixaban5 mg twice dailyTwo out of three needed for dose reduction: (i) age≥80 years (ii) body weight≤60 kg (iii) serum creatinine≥133 mmol/L.2.5 mg twice daily
Dabigatran150 mg twice dailyDose reduction recommended if any apply: (i) age≥80 years (ii) receiving concomitant verapamil. Dose reduction considered on an individual basis if any apply: (i) age 75–80 (ii) moderate renal impairment (creatinine clearance 30–50 mL/min) (iii) patients with gastritis, oesophagitis, or gastro-oesophageal refux (iv) others at increased risk of bleeding.110 mg twice daily
Edoxaban60 mg once dailyDose reduction if any apply: (i) moderate or severe renal impairment (creatinine clearance 15–50 mL/min) (ii) body weight≤60 kg (iii) concomitant use of ciclosporin, dronedarone, erythromycin, or ketoconazole.30 mg once daily
Rivaroxaban20 mg once dailyCreatinine clearance 15–49 mL/min.15 mg once daily

DOAC, direct oral anticoagulant. Dose and dose adjustments are taken from the European Medicines Association Summary of Product Characteristics for each DOAC. There may be other patient-specific reasons for providing a reduced dose, but, in general, the standard full dose should be used to provide optimal prevention of thromboembolism related to AF. Note that antiplatelet agents should be stopped in most patients when commencing a DOAC (see Section 6.3). A number of drug interactions exist with each DOAC and should be taken into consideration (see Figure 9).

6.2.2. Vitamin K antagonists

Vitamin K antagonist therapy reduces stroke risk by 64% and mortality by 26% in patients with AF at elevated thromboembolic risk (mostly warfarin in trials, compared with placebo or no treatment). Vitamin K antagonists are still used in many patients worldwide, but prescriptions have declined sharply since the introduction of DOACs. Vitamin K antagonists are currently the only treatment option in AF patients with mechanical heart valves or moderate-tosevere mitral valve stenosis. The use of VKAs is not only limited by numerous drug and food interactions ( Figure 9), but also a narrow therapeutic range. This requires frequent monitoring and dose adjustment according to the prothrombin time expressed as the international normalized ratio (INR). If the time in therapeutic range (TTR) is maintained for long periods (e.g. >70% with INR 2.0–3.0), then VKA can be effective for thromboembolic protection with an acceptable safety profile. However, VKAs are associated with higher rates of intracranial bleeding, and also higher rates of other types of bleeding compared with DOACs.

In view of the potential safety benefits, switching from VKAs to a DOAC is justified where there are concerns about intracranial bleeding or for patient-choice reasons, and a switch is recommended where patients have failed to maintain an adequate TTR (<70%). This depends on patients fulfilling eligibility criteria for DOACs and should take into account other correctable reasons for poor INR control. There is limited data on switching OAC in older patients (≥75 years) with polypharmacy or other markers of frailty. A recent trial in this patient group prematurely stopped for futility showed that switching from VKAs to DOACs led to a higher primary outcome rate of major or clinically relevant nonmajor bleeding events compared with continuing with INR-guided

VKA (17.8 vs. 10.5 per 100 patient-years, driven by non-major bleeds). Hence, in such patients who are clinically stable with good TTR, VKAs may be continued rather than switching to a DOAC after an open discussion with the patient and shared decision-making.

6.2.3. Clinical vs. device-detected subclinical AF

The known benefit of anticoagulation applies to clinical AF. Two RCTs have been published assessing the value of DOAC therapy in devicedetected subclinical AF. The ARTESiA trial (Apixaban for the Reduction of Thromboembolism in Patients With Device-Detected Sub-Clinical Atrial Fibrillation) was completed with 4012 patients with device-detected subclinical AF and a mean follow-up of 3.5 years. The primary efficacy outcome of stroke or systemic embolism was significantly less in those randomized to apixaban compared with aspirin (HR, 0.63; 95% CI, 0.45–0.88; P =.007). In the intention-to-treat analysis, the primary safety outcome of major bleeding was higher with apixaban (HR, 1.36; 95% CI, 1.01–1.82; P =.04). The NOAH trial (Nonvitamin K Antagonist Oral Anticoagulants in Patients With Atrial High Rate Episodes) was stopped prematurely due to safety concerns and futility for the efficacy of edoxaban, and hence provides limited information. The analysis of 2536 patients with device-detected atrial highrate episodes and a median follow-up of 21 months identified no difference in a composite of cardiovascular death, stroke, or embolism comparing edoxaban and placebo (HR, 0.81; 95% CI, 0.60–1.08; P =.15). Those randomized to edoxaban had a higher rate of the composite of death or major bleeding than placebo (HR, 1.31; 95% CI, 1.02–1.67; P =.03). Patients had a low burden of devicedetected subclinical AF in both trials (median duration 1.5 h and

ESC Guidelines

2.8 h, respectively), with lower rates of thromboembolism (around 1% per patient-year) than would be expected for an equivalent cohort of patients with clinical AF and a CHA2DS2-VASc score of 4.

Considering the trade-off between potential benefit and the risk of major bleeding, this task force concludes that DOAC therapy may be considered in subgroups of patients with asymptomatic devicedetected subclinical AF who have high estimated stroke risk and an absence of major bleeding risk factors (see Section 6.7). The duration and burden of subclinical AF that could indicate potential benefit from OAC remains uncertain. Regardless of the initial decision on OAC, patients with subclinical AF should receive management and follow-up for all aspects of AF-CARE as the risk of developing clinical AF is high (6%–9% per year).

6.3. Antiplatelet drugs and combinations with anticoagulants

Antiplatelet drugs, such as aspirin and clopidogrel, are not an alternative to OAC. They should not be used for stroke prevention, and can lead to potential harm (especially among elderly patients with AF). In ACTIVE W (Atrial fibrillation Clopidogrel Trial with Irbesartan for prevention of Vascular Events), dual antiplatelet therapy (DAPT) with aspirin and clopidogrel was less effective than warfarin for the prevention of stroke, systemic embolism, MI, or vascular death (annual risk of events 5.6% vs. 3.9%, respectively; P =.0003), with similar rates of major bleeding. The AVERROES (Apixaban Versus Acetylsalicylic Acid to Prevent Stroke in Atrial Fibrillation Patients Who Have Failed or Are Unsuitable for Vitamin K Antagonist Treatment) trial demonstrated a lower rate of stroke or systemic embolism with apixaban compared with aspirin (HR, 0.45; 95% CI, 0.32–0.62; P <.001), with no significant difference in major bleeding (there were 11 cases of intracranial bleeding with apixaban and 13 with aspirin).

The combination of OAC with antiplatelet agents (especially aspirin) without an adequate indication occurs frequently in clinical practice (see Supplementary data online, Additional Evidence Table S9). Bleeding events are more common when antithrombotic agents are combined, and no clear benefit has been observed in terms of prevention of stroke or death. In general, combining antiplatelet drugs with anticoagulants (DOACs or VKAs) should only occur in selected patients with acute vascular disease (e.g. acute coronary syndromes; see Section 9.2). The combination of low-dose rivaroxaban (2.5 mg) with aspirin reduced the risk of stroke in patients with chronic vascular disease in a subanalysis of the COMPASS (Cardiovascular Outcomes for People Using Anticoagulation Strategies) trial, but this cannot be generalized to AF patients because those with an indication for fulldose anticoagulants were excluded.

Recommendation Table 8 — Recommendations for combining antiplatelet drugs with anticoagulants for stroke prevention (see also Evidence Table 8)

RecommendationClassaLevelb© ESC 2024
Adding antiplatelet treatment to oral anticoagulation is not recommended in AF patients for the goal of preventing ischaemic stroke or thromboembolism.345,347,353IIIB

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

6.4. Residual ischaemic stroke risk despite anticoagulation

Although OAC significantly reduces the risk of ischaemic stroke in patients with AF, there remains a residual risk. One-third of patients with AF presenting with an ischaemic stroke are already on anticoagulation, with heterogeneous aetiology. This may include non-AFrelated competing stroke mechanisms (such as large artery and small vessel diseases), non-adherence to therapy, an inappropriately low dose of anticoagulant, or thromboembolism despite sufficient anticoagulation. Laboratory measurement of INR or DOAC levels may contribute to revealing an amenable cause of the stroke. Regardless of anticoagulation status, patients with ischaemic stroke are more likely to have cardiovascular risk factors. Many clinicians managing patients with an incident stroke despite taking anticoagulation will be tempted to switch their anticoagulant regimen. While there may be some advantage in switching from VKAs to DOACs for protection against future recurrent ischaemic or haemorrhagic stroke, this task force does not recommend routinely switching from one DOAC to another, or from a DOAC to a VKA, since this has no proven efficacy. There may be individual reasons for switching, including potential interactions with new drugs; however, there is no consistent data across countries that adherence or efficacy differs between once- and twicedaily approaches. Emerging, but observational evidence suggests that switching provides limited reduction in the risk of recurrent ischaemic stroke. The alternative strategy of adding antiplatelet therapy to OAC may lead to an increased risk of bleeding. Aside from thorough attention to underlying risk factors and comorbidities, the approach to management of patients with a stroke despite OAC remains a distinct challenge.

Recommendation Table 9 — Recommendations for thromboembolism despite anticoagulation (see also Evidence Table 9)

RecommendationClassaLevelb© ESC 2024
A thorough diagnostic work-up should be considered in patients taking an oral anticoagulant and presenting with ischaemic stroke or thromboembolism to prevent recurrent events, including assessment of non-cardioembolic causes, vascular risk factors, dosage, and adherence.356,357IIaB
Adding antiplatelet treatment to anticoagulation is not recommended in patients with AF to prevent recurrent embolic stroke.356,359IIIB
Switching from one DOAC to another, or from a DOAC to a VKA, without a clear indication is not recommended in patients with AF to prevent recurrent embolic stroke.252,356,359IIIB

AF, atrial fibrillation; DOAC, direct oral anticoagulant; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

6.5. Percutaneous left atrial appendage occlusion

Percutaneous left atrial appendage occlusion (LAAO) is a device-based therapy that aims to prevent ischaemic stroke in patients with AF. In the VKA era, two RCTs compared warfarin with LAAO using the

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Watchman device. The 5-year pooled outcomes demonstrated a similar rate of the composite endpoint (cardiovascular or unexplained death, systemic embolism, and stroke) between the LAAO and warfarin arms. Those randomized to LAAO had significantly lower rates of haemorrhagic stroke and all-cause death, but also a 71% nonsignificant increase in ischaemic stroke and systemic embolism. With DOACs demonstrating similar rates of major bleeding to aspirin, warfarin in the control arms in these trials is no longer standard of care and hence the place of LAAO in current practice is unclear. The Amulet occluder is an alternative LAAO device which was non-inferior in an RCT to the Watchman device for safety events (procedure-related complications, death, or major bleeding) and thromboembolism. In the PRAGUE-17 trial, 402 AF patients were randomized to DOAC or LAAO (Watchman or Amulet), with noninferiority reported for a broad composite primary endpoint of stroke, TIA, systemic embolism, cardiovascular death, major or non-major clinically relevant bleeding, and procedure/device-related complications. Larger trials are expected to provide more comprehensive data that can add to the current evidence base (see Supplementary data online, Additional Evidence Table S10).

Pending further RCTs (see Supplementary data online, Table S4), patients with a contraindication to all of the OAC options (the four DOACs and VKAs) have the most appropriate rationale for LAAO implantation, despite the paradox that the need for post-procedure antithrombotic treatment exposes the patient to a bleeding risk that may be equivalent to that of DOACs. Regulatory approvals based on RCT protocols suggest the need for 45 days of VKA plus aspirin after implantation, followed by 6 months of DAPT in patients with no major peri-device leaks, and then ongoing aspirin (see Supplementary data online, Figure S2). However, real-world practice is markedly different and also varied. Direct oral anticoagulant administration at full or reduced dose has been proposed as a treatment alternative to warfarin. Observational studies have also supported the use of antiplatelet therapy without associated increases in device-related thrombosis or stroke. In a propensity-matched comparison of patients receiving limited early OAC vs. antiplatelet treatment post-Watchman implantation, thromboembolic event rates and bleeding complications were similar. While waiting for solid RCT data (NCT03445949, NCT03568890), pertinent decisions on antithrombotic treatment are usually made on an individualized basis. Prevention of recurrent stroke, in addition to OAC, is another potential indication for LAAO. Only limited data are so far available from registries, with ongoing trials expected to provide more insight (NCT03642509, NCT05963698).

Left atrial appendage occlusion device implantation is associated with procedural risk including stroke, major bleeding, devicerelated thrombus, pericardial effusion, vascular complications, and death. Voluntary registries enrolling patients considered ineligible for OAC have reported low peri-procedural risk, although national registries report in-hospital major adverse event rates of 9.5% in centres performing 5–15 LAAO cases per year, and 5.6% performing 32–211 cases per year ( P <.001). Registries with new-generation devices report a lower complication rate compared with RCT data. Devicerelated thrombi occur with an incidence of 1.7%–7.2% and are associated with a higher risk of ischaemic stroke. Their detection can be documented as late as 1 year post-implantation in one-fifth of patients, thus mandating a late ‘rule-out’ imaging approach. Likewise, follow-up screening for peri-device leaks is relevant, as small leaks (0–5 mm) are present in ∼25% and have

been associated with higher thromboembolic and bleeding events during 1 year follow-up in a large observational registry of one particular device.

Recommendation Table 10 — Recommendations for percutaneous left atrial appendage occlusion (see also Evidence Table 10)

RecommendationClassaLevelb© ESC 2024
Percutaneous LAA occlusion may be considered in patients with AF and contraindications for long-term anticoagulant treatment to prevent ischaemic stroke and thromboembolism.372,376,386,387IIbC

AF, atrial fibrillation; LAA, left atrial appendage. aClass of recommendation. bLevel of evidence.

6.6. Surgical left atrial appendage occlusion

Surgical occlusion or exclusion of the left atrial appendage (LAA) can contribute to stroke prevention in patients with AF undergoing cardiac surgery. The Left Atrial Appendage Occlusion Study (LAAOS III) randomized 4811 patients with AF to undergo or not undergo LAAO at the time of cardiac surgery for another indication. During a mean of 3.8 years follow-up, ischaemic stroke or systemic embolism occurred in 114 patients (4.8%) in the occlusion group and 168 (7.0%) in the control arm (HR, 0.67; 95% CI, 0.53–0.85; P =.001). The LAAOS III trial did not compare appendage occlusion with anticoagulation (77% of participants continued to receive OAC), and therefore, surgical LAA closure should be considered as an adjunct therapy to prevent thromboembolism in addition to anticoagulation in patients with AF.

There are no RCT data showing a beneficial effect on ischaemic stroke or systemic embolism in patients with AF undergoing LAAO during endoscopic or hybrid AF ablation. A meta-analysis of RCT and observational data showed no differences in stroke prevention or allcause mortality when comparing LAA clipping during thoracoscopic AF ablation with percutaneous LAAO and catheter ablation. While the percutaneous LAAO/catheter ablation group showed a higher acute success rate, it was also associated with a higher risk of haemorrhage during the peri-operative period. In an observational study evaluating 222 AF patients undergoing LAA closure using a clipping device as a part of endoscopic or hybrid AF ablation, complete closure was achieved in 95% of patients. There were no intra-operative complications, and freedom from a combined endpoint of ischaemic stroke, haemorrhagic stroke, or TIA was 99.1% over 369 patient-years of follow-up. Trials evaluating the beneficial effect of surgical LAA closure in patients undergoing cardiac surgery but without a known history of AF are ongoing (NCT03724318, NCT02701062).

There is a potential advantage for stand-alone epicardial over percutaneous LAA closure in patients with a contraindication for OAC, as there is no need for post-procedure anticoagulation after epicardial closure. Observational data show that stand-alone LAA closure using an epicardial clip is feasible and safe. A multidisciplinary team approach can facilitate the choice between epicardial or percutaneous LAA closure in such patients. The majority of safety data and experience in epicardial LAA closure originate from a single clipping device (AtriClip) (see Supplementary data online, Additional Evidence Table S11).

ESC Guidelines

Recommendation Table 11 — Recommendations for surgical left atrial appendage occlusion (see also Evidence Table 11)

RecommendationsClassaLevelb© ESC 2024
Surgical closure of the left atrial appendage is recommended as an adjunct to oral anticoagulation in patients with AF undergoing cardiac surgery to prevent ischaemic stroke and thromboembolism.400,401,408–412IB
Surgical closure of the left atrial appendage should be considered as an adjunct to oral anticoagulation in patients with AF undergoing endoscopic or hybrid AF ablation to prevent ischaemic stroke and thromboembolism.402,403IIaC
Stand-alone endoscopic surgical closure of the left atrial appendage may be considered in patients with AF and contraindications for long-term anticoagulant treatment to prevent ischaemic stroke and thromboembolism.399,405,406,413IIbC

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

6.7. Bleeding risk

OAC that are at high risk of gastrointestinal bleeding. However, the evidence base is limited and not specifically in patients with AF. Whereas observational studies have shown potential benefit from proton pump inhibitors, a large RCT in patients receiving low-dose anticoagulation and/or aspirin for stable cardiovascular disease found that pantoprazole had no significant impact on upper gastrointestinal bleeding events compared with placebo (HR, 0.88; 95% CI, 0.67–1.15). Hence, the use of gastric protection should be individualized for each patient according to the totality of their perceived bleeding risk.

Recommendation Table 12 — Recommendations for assessment of bleeding risk (see also Evidence Table 12)

RecommendationsClassaLevelb© ESC 2024
Assessment and management of modifable bleeding risk factors is recommended in all patients eligible for oral anticoagulation, as part of shared decision-making to ensure safety and prevent bleeding.439–444IB
Use of bleeding risk scores to decide on starting or withdrawing oral anticoagulation is not recommended in patients with AF to avoid under-use of anticoagulation.431,445,446IIIB

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

6.7.1. Assessment of bleeding risk

When initiating antithrombotic therapy, modifiable bleeding risk factors should be managed to improve safety ( Figure 10). This includes strict control of hypertension, advice to reduce excess alcohol intake, avoidance of unnecessary antiplatelet or anti-inflammatory agents, and attention to OAC therapy (adherence, control of TTR if on VKAs, and review of interacting medications). Clinicians should consider the balance between stroke and bleeding risk—as factors for both are dynamic and overlapping, they should be re-assessed at each review depending on the individual patient. Bleeding risk factors are rarely a reason to withdraw or withhold OAC in eligible patients, as the risk of stroke without anticoagulation often outweighs the risk of major bleeding. Patients with non-modifiable risk factors should be reviewed more often, and where appropriate, a multidisciplinary team approach should be instituted to guide management.

Several bleeding risk scores have been developed to account for a wide range of clinical factors (see Supplementary data online, Table S5 and Additional Evidence Tables S12 and S13). Systematic reviews and validation studies in external cohorts have shown contrasting results and only modest predictive ability. This task force does not recommend a specific bleeding risk score given the uncertainty in accuracy and potential adverse implications of not providing appropriate OAC to those at thromboembolic risk. There are very few absolute contraindications to OAC (especially DOAC therapy). Whereas primary intracranial tumours or an intracerebral bleed related to cerebral amyloid angiopathy are examples where OAC should be avoided, many other contraindications are relative or temporary. For example, a DOAC can often be safely initiated or reinitiated after acute bleeding has stopped, as long as the source has been fully investigated and managed. Co-prescription of proton pump inhibitors is common in clinical practice for patients receiving

6.7.2. Management of bleeding on anticoagulant therapy

General management of bleeding in patients receiving OAC is outlined in Figure 11. Cause-specific management is beyond the scope of these guidelines, and will depend on the individual circumstances of the patient and the healthcare environment. Assessment of patients with active bleeding should include confirmation of the bleeding site, bleeding severity, type/dose/timepoint of last anticoagulant intake, concomitant use of other antithrombotic agents, and other factors influencing bleeding risk (renal function, platelet count, and medications such as non-steroidal anti-inflammatories). INR testing and information on recent results are invaluable for patients taking VKAs. Specific coagulation tests for DOACs include diluted thrombin time, ecarin clotting time, ecarin chromogenic assay for dabigatran, and chromogenic anti-factor Xa assay for rivaroxaban, apixaban, and edoxaban. Diagnostic and treatment interventions to identify and manage the cause of bleeding (e.g. gastroscopy) should be performed promptly.

In cases of minor bleeding, temporary withdrawal of OAC while the cause is managed is usually sufficient, noting that the reduction in anticoagulant effect is dependent on the INR level for VKAs or the half-life of the particular DOAC.

For major bleeding events in patients taking VKAs, administration of fresh frozen plasma restores coagulation more rapidly than vitamin K, but prothrombin complex concentrates achieve even faster blood coagulation with fewer complications, and so are preferrable to achieve haemostasis. In DOAC-treated patients where the last DOAC dose was taken within 2–4 h, charcoal administration and/or gastric lavage may reduce further exposure. If the patient is taking dabigatran, idarucizumab can fully reverse its anticoagulant effect and help to achieve haemostasis within 2–4 h in

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----- Start of picture text ----- Comprehensive medical history to determine all bleeding risk factors at OAC initiation/follow-up (Class I) Do not use bleeding risk scores to decide starting or withdrawing OAC (Class III) Manage all modifiable bleeding risk factors with shared decision-making (Class I) Hypertension Antiplatelet drugs Alcohol intake Unstable/variable INR Optimize blood Do not use antiplatelet Reduce alcohol to <3 Keep INR 2.0–3.0 pressure lowering therapy beyond 12 months standard drinks (Class I) treatment in stable OAC-treated per week and TTR >70% (Class I) patients with chronic (Class I) (Class IIa) coronary/vascular disease NSAIDs (Class III) Other factors Switch to DOAC if eligibleand failed to maintain or disease-modifying therapy Offer alternative analgesia therapy to OAC to preventDo not add antiplatelet Consider drug interactionsReduce corticosteroid use TTR on VKA(Class I) thromboembolic events (Class III) if possible Minimize duration of Offer proton pump inhibitors or recurrent stroke heparin-bridging therapy if high GI bleeding risk (Class III) Advise restricting hazardous hobbies/occupations DOAC instead of VKA when antiplatelet treatment is needed (Class I) Address all potentially modifiable bleeding risk factors with shared decision-making Anaemia Work with multidisciplinary team on each element Ensure correct OAC dose and monitoring Reduced platelet count or function Manage heart failure and achieve euvolaemia Renal impairment (Class I) Risk of falls Diabetes mellitus Effective glycaemic control for patients with diabetes Congestive heart failure (Class I) Consider the impact of non-modifiable bleeding risk factors with shared decision-making Age Previous major bleeding Review patient more regularly Severe renal impairment, dialysis or renal transplant Work with multidisciplinary team to monitor risk factors Severe hepatic dysfunction or cirrhosis Malignancy Genetic factors (e.g. CYP2C9 polymorphisms) If clear contraindications for OAC [a], consider Previous stroke left atrial appendage occlusion Cognitive impairment or dementia (Class IIb) Intracerebral pathology Re-assess at next interaction with patient ----- End of picture text -----

Figure 10 Modifying the risk of bleeding associated with OAC. DOAC, direct oral anticoagulant; GI, gastrointestinal; INR, international normalized ratio of prothrombin time; NSAID, non-steroidal anti-inflammatory drug; OAC, oral anticoagulant; TTR, time in therapeutic range; VKA, vitamin K antagonist.[a] Absolute contraindications for OAC therapy are rare, and include primary intracranial tumours and intracerebral bleeds related to amyloid angiopathy. In most cases, contraindications may be relative or temporary. Left atrial appendage occlusion can be performed through a percutaneous or endoscopic approach.

ESC Guidelines

----- Start of picture text ----- Patient with active bleeding Compress bleeding sites mechanically, if accessible Assess haemodynamic status, basic coagulation parameters, blood count and kidney function Determine dose and time of last OAC and all co-medications VKA DOAC Non-life- Life-threatening Non-life- Life-threatening Minor Minor threatening or bleeding into threatening or bleeding into bleeding bleeding major bleeding a critical site major bleeding a critical site Interrupt anticoagulation and perform diagnostic Interrupt anticoagulation and perform diagnostic or treatment interventions or treatment interventions (Class I) (Class I) Multidisciplinary team approach Multidisciplinary team approach Delay VKA Fluid Fluid Delay DOAC Fluid Fluid until INR <2 replacement replacement for 1–2 doses replacement replacement Blood Blood (or more Blood Blood transfusion transfusion depending transfusion transfusion Consider need PCC on recovery) Consider oral Specific for vitamin K, (Class IIa) charcoal or antidotes FFP, PCC gastric lavage (Class IIa) FFP if PCC not if DOAC taken PCC if no available within 2–4 antidotes Replacement hours available of platelets Consider need where Replacement for PCC of platelets appropriate where appropriate Monitoring of DOAC levels Management after the bleeding episode Discuss benefits and risk of restarting OAC (shared decision-making approach) Aim to re-initiate anticoagulation in the absence of contraindications or if source of bleeding has been addressed Assess risk of repeat bleeding Intensify efforts to modify bleeding risk factors Review choice and dose of OAC Institute close and ongoing monitoring ----- End of picture text -----

Figure 11 Management of oral anticoagulant-related bleeding in patients with AF. DOAC, direct oral anticoagulant; FFP, fresh frozen plasma; INR, international normalized ratio of prothrombin time; OAC, oral anticoagulant; PCC, prothrombin complex concentrate; VKA, vitamin K antagonist.

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uncontrolled bleeding. Dialysis can also be effective in reducing dabigatran concentration. Andexanet alfa rapidly reverses the activity of factor Xa inhibitors (apixaban, edoxaban, rivaroxaban) (see Supplementary data online, Additional evidence Table S14). An open-label RCT comparing andexanet alfa to usual care in patients presenting with acute ICH within 6 h of symptom onset was stopped early due to improved control of bleeding after 450 patients had been randomized. As DOAC-specific antidotes are not yet available in all institutions, prothrombin complex concentrates are often used in cases of serious bleeding on factor Xa inhibitors, with evidence limited to observational studies.

Due to the complexities of managing bleeding in patients taking OAC, it is advisable that each institution develop specific policies involving a multidisciplinary team that includes cardiologists, haematologists, emergency physicians/intensive care specialists, surgeons, and others. It is also important to educate patients taking anticoagulants on the signs and symptoms of bleeding events and to alert their healthcare provider when such events occur.

The decision to reinstate OAC will be determined by the severity, cause, and subsequent management of bleeding, preferably by a multidisciplinary team and with close monitoring. Failure to reinstitute OAC after a bleed significantly increases the risk of MI, stroke, and death. However, if the cause of severe or life-threatening bleeds cannot be treated or reversed, the risk of ongoing bleeding may outweigh the benefit of thromboembolic protection.

Recommendation Table 13 — Recommendations for management of bleeding in anticoagulated patients (see also Evidence Table 13)

RecommendationsClassaLevelb© ESC 2024
Interrupting anticoagulation and performing diagnostic or treatment interventions is recommended in AF patients with active bleeding until the cause of bleeding is identifed and resolved.IC
Prothrombin complex concentrates should be considered in AF patients on VKAs who develop a life-threatening bleed, or bleed into a critical site, to reverse the antithrombotic effect.450IIaC
Specifc antidotes should be considered in AF patients on a DOAC who develop a life-threatening bleed, or bleed into a critical site, to reverse the antithrombotic effect.451,455,456IIaB

AF, atrial fibrillation; DOAC, direct oral anticoagulant; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

7. [R] Reduce symptoms by rate and rhythm control

Most patients diagnosed with AF will need therapies and/or interventions to control heart rate, revert to sinus rhythm, or maintain sinus rhythm to limit symptoms or improve outcomes. While the concept of choosing between rate and rhythm control is often discussed, in reality most patients require a combination approach which should be consciously re-evaluated during follow-up. Within a patient-centred and shared-management approach, rhythm control should be a consideration in all suitable AF patients, with explicit discussion of benefits and risks.

7.1. Management of heart rate in patients with AF

Limiting tachycardia is an integral part of AF management and is often sufficient to improve AF-related symptoms. Rate control is indicated as initial therapy in the acute setting, in combination with rhythm control therapies, or as the sole treatment strategy to control heart rate and reduce symptoms. Limited evidence exists to inform the best type and intensity of rate control treatment. The approach to heart rate control presented in Figure 7 can be used for all types of AF, including paroxysmal, persistent, and permanent AF.

Recommendation Table 14 — Recommendations for heart rate control in patients with AF (see also Evidence Table 14)

RecommendationsClassaLevelb© ESC 2024
Rate control therapy is recommended in patients with AF, as initial therapy in the acute setting, an adjunct to rhythm control therapies, or as a sole treatment strategy to control heart rate and reduce symptoms.458–460IB
Beta-blockers, diltiazem, verapamil, or digoxin are recommended as frst-choice drugs in patients with AF and LVEF>40% to control heart rate and reduce symptoms.48,461,462IB
Beta-blockers and/or digoxin are recommended in patients with AF and LVEF≤40% to control heart rate and reduce symptoms.40,185,463–465IB
Combination rate control therapy should be considered if a single drug does not control symptoms or heart rate in patients with AF, providing that bradycardia can be avoided, to control heart rate and reduce symptoms.IIaC
Lenient rate control with a resting heart rate of <110 b.p.m. should be considered as the initial target for patients with AF, with stricter control reserved for those with continuing AF-related symptoms.459,460,466IIaB
Atrioventricular node ablation in combination with pacemaker implantation should be considered in patients unresponsive to, or ineligible for, intensive rate and rhythm control therapy to control heart rate and reduce symptoms.467–469IIaB
Atrioventricular node ablation combined with cardiac resynchronization therapy should be considered in severely symptomatic patients with permanent AF and at least one hospitalization for HF to reduce symptoms, physical limitations, recurrent HF hospitalization, and mortality.470,471IIaB
Intravenous amiodarone, digoxin, esmolol, or landiolol may be considered in patients with AF who have haemodynamic instability or severely depressed LVEF to achieve acute control of heart rate.472,473IIbB

AF, atrial fibrillation; b.p.m., beats per minute; HF, heart failure; LVEF, left ventricular ejection fraction. aClass of recommendation. bLevel of evidence.

ESC Guidelines

7.1.1. Indications and target heart rate

The optimal heart rate target in AF patients depends on the setting, symptom burden, presence of heart failure, and whether rate control is combined with a rhythm control strategy. In the RACE II (Rate Control Efficacy in Permanent Atrial Fibrillation) RCT of patients with permanent AF, lenient rate control (target heart rate <110 [beats per minute] b.p.m.) was non-inferior to a strict approach (<80 b.p.m. at rest; <110 b.p.m. during exercise; Holter for safety) for a composite of clinical events, NYHA class, or hospitalization. Similar results were found in a post-hoc combined analysis from the AFFIRM (Atrial Fibrillation Follow-up Investigation of Rhythm Management) and the RACE (Rate Control versus Electrical cardioversion) studies. Therefore, lenient rate control is an acceptable initial approach, unless there are ongoing symptoms or suspicion of tachycardia-induced cardiomyopathy, where stricter targets may be indicated.

7.1.2. Heart rate control in the acute setting

In acute settings, physicians should always evaluate and manage underlying causes for the initiation of AF prior to, or in parallel to, instituting acute rate and/or rhythm control. These include treating sepsis, addressing fluid overload, or managing cardiogenic shock. The choice of drug ( Table 12) will depend on the patient’s characteristics, presence of heart failure and LVEF, and haemodynamic profile ( Figure 7). In general for acute rate control, beta-blockers (for all LVEF) and diltiazem/verapamil (for LVEF >40%) are preferred over digoxin because of their more rapid onset of action and dose-dependent effects. More selective beta-1 receptor blockers have a better efficacy and safety profile than unselective beta-blockers. Combination therapy with digoxin may be required in acute settings (combination of beta-blockers with diltiazem/verapamil should be avoided except in closely monitored situations). In selected patients who are haemodynamically unstable or with severely impaired LVEF, intravenous amiodarone, landiolol, or digoxin can be used.

7.1.3. Long-term heart rate control

Pharmacological rate control can be achieved with beta-blockers, diltiazem, verapamil, digoxin, or combination therapy ( Table 12) (see Supplementary data online, Additional Evidence Table S15).

The choice of rate control drugs depends on symptoms, comorbidities, and the potential for side effects and interactions. Combination therapy of different rate-controlling drugs should be considered only when needed to achieve the target heart rate, and careful follow-up to avoid bradycardia is advised. Combining beta-blockers with verapamil or diltiazem should only be performed in secondary care with regular monitoring of heart rate by 24 h ECG to check for bradycardia. Some antiarrhythmic drugs (AADs) also have ratelimiting properties (e.g. amiodarone, sotalol), but they should generally be used only for rhythm control. Dronedarone should not be instituted for rate control since it increases rates of heart failure, stroke, and cardiovascular death in permanent AF.

Beta-blockers, specifically beta-1 selective adrenoreceptor antagonists, are often first-line rate-controlling agents largely based on their acute effect on heart rate and the beneficial effects demonstrated in patients with chronic HFrEF. However, the prognostic benefit of beta-blockers seen in HFrEF patients with sinus rhythm may not be present in patients with AF.

Verapamil and diltiazem are non-dihydropyridine calcium channel blockers. They provide rate control and have a different adverse effect profile, making verapamil or diltiazem useful for those experiencing side effects from beta-blockers. In a 60 patient crossover RCT, verapamil and diltiazem did not lead to the same reduction in exercise capacity as seen with beta-blockers, and had a beneficial impact on BNP.

Digoxin and digitoxin are cardiac glycosides that inhibit the sodium–potassium adenosine triphosphatase and augment parasympathetic tone. In RCTs, there is no association between the use of digoxin and any increase in all-cause mortality. Lower doses of digoxin may be associated with better prognosis. Serum digoxin concentrations can be monitored to avoid toxicity, especially in patients at higher risk due to older age, renal dysfunction, or use of interacting medications. In RATE-AF (RAte control Therapy Evaluation in permanent Atrial Fibrillation), a trial in patients with symptomatic permanent AF, there was no difference between low-dose digoxin and bisoprolol for patient-reported quality of life outcomes at 6 months. However, those randomized to digoxin demonstrated fewer adverse effects, a greater improvement in mEHRA and NYHA scores, and a reduction in BNP. Two ongoing RCTs are addressing digoxin and digitoxin use in patients with HFrEF with and without AF (EudraCT2013-005326-38, NCT03783429).

Table 12 Drugs for rate control in AF

AgentaIntravenous administrationUsual range for oral maintenance doseContraindicated
Beta-blockersb
Metoprolol tartrate2.5–5 mg bolus over 2 mins; up to 15 mg maximal cumulative dose25–100 mg twice dailyIn case of asthma, non-selective beta-blockers should be avoided. Contraindicated in acute HF and history of severe bronchospasm.
Metoprolol XL (succinate)N/A50–200 mg once daily
BisoprololN/A1.25–20 mg once daily
AtenololcN/A25–100 mg once daily
Esmolol500 µg/kg i.v. bolus over 1 min; followed by 50–300 µg/kg/minN/A
Landiolol100 µg/kg i.v. bolus over 1 min; followed by 10–40 µg/kg/minN/A
NebivololN/A2.5–10 mg once daily
CarvedilolN/A3.125–50 mgtwice daily

Continued

ESC Guidelines 3353

Non-dihydropyridine calcium channel antagonistsNon-dihydropyridine calcium channel antagonistsNon-dihydropyridine calcium channel antagonistsContraindicated if LVEF≤40%. Adapt doses in hepatic and renal impairment. High plasma levels associated with adverse events. Check renal function before starting digoxin and adapt dose in CKD patients. Contraindicated in iodine sensitivity. Serious potential adverse effects (including pulmonary, ophthalmic, hepatic, and thyroid). Consider numerous drug interactions. © ESC 2024
Verapamil2.5–10 mg i.v. bolus over 5 min40 mg twice daily to 480 mg (extended release) once dailyContraindicated if LVEF≤40%. Adapt doses in hepatic and renal impairment.
Diltiazem0.25 mg/kg i.v. bolus over 5 min, then 5–15 mg/h60 mg three times daily to 360 mg (extended release) once daily
Digitalis glycosides
Digoxin0.5 mg i.v. bolus (0.75–1.5 mg over 24 h in divided doses)0.0625–0.25 mg once dailyHigh plasma levels associated with adverse events. Check renal function before starting digoxin and adapt dose in CKD patients.
Digitoxin0.4–0.6 mg0.05–0.1 mg once daily
Other
Amiodaroned300 mg i.v. diluted in 250 mL 5% dextrose over 30–60 min (preferably via central venous cannula), followed by 900–1200 mg i.v. over 24 h diluted in 500–1000 mL via a central venous cannula200 mg once daily after loading Loading: 200 mg three times daily for 4 weeks, then 200 mg daily or less as appropriate (reduce other rate control drugs according to heart rate)Contraindicated in iodine sensitivity. Serious potential adverse effects (including pulmonary, ophthalmic, hepatic, and thyroid). Consider numerous drug interactions.

AF, atrial fibrillation; CKD, chronic kidney disease; HF, heart failure; i.v., intravenous; min, minutes; N/A, not available or not widely available. Maximum doses have been defined based on the summary of product characteristic of each drug. aAll rate control drugs are contraindicated in Wolff–Parkinson–White syndrome; also intravenous amiodarone. bOther beta-blockers are available but not recommended as specific rate control therapy in AF and therefore not mentioned here (e.g. propranolol and labetalol). cNo data on atenolol; should not be used in heart failure with reduced ejection fraction or in pregnancy. dLoading regimen may vary; i.v. dosage should be considered when calculating total load.

Due to its broad extracardiac adverse effect profile, amiodarone is reserved as a last option when heart rate cannot be controlled even with maximal tolerated combination therapy, or in patients who do not qualify for atrioventricular node ablation and pacing. Many of the adverse effects from amiodarone have a direct relationship with cumulative dose, restricting the long-term value of amiodarone for rate control.

7.1.4. Atrioventricular node ablation and pacemaker implantation

Ablation of the atrioventricular node and pacemaker implantation (‘ablate and pace’) can lower and regularize heart rate in patients with AF (see Supplementary data online, Additional Evidence Table S16). The procedure has a low complication rate and a low long-term mortality risk. The pacemaker should be implanted a few weeks before the atrioventricular node ablation, with the initial pacing rate after ablation set at 70– 90 b.p.m. This strategy does not worsen LV function, and may even improve LVEF in selected patients. The evidence base has typically included older patients. For younger patients, ablate and pace should only be considered if heart rate remains uncontrolled despite consideration of other pharmacological and non-pharmacological treatment options. The choice of pacing therapy (right ventricular or biventricular pacing) depends on patient characteristics, presence of heart failure, and LVEF.

In severely symptomatic patients with permanent AF and at least one hospitalization for heart failure, atrioventricular node ablation combined with CRT should be considered. In the APAF-CRT (Ablate and Pace for Atrial Fibrillation-cardiac resynchronization therapy) trial in a population with narrow QRS complexes, atrioventricular node ablation combined with CRT was superior to rate control drugs for the primary outcomes (all-cause mortality, and death or hospitalization for heart failure), and secondary outcomes (symptom burden and physical limitation). Conduction system pacing may become a potentially useful alternate pacing mode when implementing a pace and ablate strategy, once safety and efficacy have been confirmed in larger RCTs. In CRT recipients, the presence (or occurrence) of AF is one of the main reasons for suboptimal biventricular pacing. Improvement of biventricular pacing is indicated and can be reached by intensification of rate control drug regimens, atrioventricular node ablation, or rhythm control, depending on patient and AF characteristics.

7.2. Rhythm control strategies in patients with AF

7.2.1. General principles and anticoagulation

Rhythm control refers to therapies dedicated to restoring and maintaining sinus rhythm. These treatments include cardioversion, AADs, percutaneous catheter ablation, endoscopic and hybrid ablation, and open surgical approaches (see Supplementary data online, Additional Evidence Table S17). Rhythm control is never a strategy on its own; instead, it should always be part of the AF-CARE approach.

In patients with acute or worsening haemodynamic instability thought to be caused by AF, rapid electrical cardioversion is recommended. For other patients, a wait-and-see approach should be considered as an alternative to immediate cardioversion ( Figure 12). The Rate Control versus Electrical Cardioversion Trial 7–Acute Cardioversion versus Wait and See (RACE 7 ACWAS) trial in patients with recent-onset symptomatic AF without haemodynamic compromise showed a wait-and-see approach for spontaneous conversion until 48 h after the onset of AF symptoms was noninferior as compared with immediate cardioversion at 4 weeks follow-up.

Since the publication of landmark trials more than 20 years ago, the main reason to consider longer-term rhythm control therapy has been the reduction in symptoms from AF. Older studies have shown that the institution of a rhythm control strategy using AADs does not reduce mortality and morbidity when compared with a rate control-only strategy, and may increase hospitalization. In contrast, multiple studies have shown that rhythm control strategies have a positive effect on quality of life once sinus rhythm is maintained. Therefore, in the case of uncertainty of the presence of symptoms associated with AF, an attempt to restore sinus rhythm is a rational first step. In patients with symptoms, patient factors that favour an attempt at rhythm control should be considered, including suspected tachycardiomyopathy, a brief AF history, non-dilated left atrium, or patient preference.

Rhythm control strategies have significantly evolved due to an increasing experience in the safe use of antiarrhythmic drugs, consistent use of OAC, improvements in ablation technology, and identification and management of risk factors and comorbidities. In the ATHENA trial (A Placebo-Controlled, Double-Blind, Parallel Arm Trial to Assess the Efficacy of Dronedarone 400 mg twice daily for the Prevention of

ESC Guidelines

----- Start of picture text ----- Cardioversion for atrial fibrillation Y Haemodynamically stable N Emergency electrical cardioversion (Class I) Check OAC status as soon as possible and proceed to last step Check OAC status Already on therapeutic OAC Not already on OAC for minimum 3 weeks Suitable for wait-and-see Cardioversion approach cannot wait (Class IIa) Therapeutic OAC Initiation of DOAC for at least 3 weeks Pharmacological Wait-and-see before scheduled (or VKA, LMWH, or electrical approach for cardioversion or UFH) for spontaneous unscheduled cardioversion (adherence to conversion cardioversion as (Class IIa) DOACs or (Class IIa) INR ≥ 2.0 for VKAs) soon as possible (Class IIa) (Class I) Elective electrical Check current AF cardioversion, episode duration if needed AF onset <24 h AF onset ≥ 24 h or unknown Pharmacological or TOE guided cardioversion electrical cardioversion (Class I) Decide on continued OAC post-cardioversion Short-term OAC after cardioversion (4 weeks) for all patients, even if CHA2DS2-VA = 0 (optional if AF onset definitely <24 h and low thromboembolic risk) Long-term OAC for all patients according to thromboembolic risk assessment ----- End of picture text -----

Figure 12 Approaches for cardioversion in patients with AF. AF, atrial fibrillation; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; h, hour; LMWH, low molecular weight heparin; DOAC, direct oral anticoagulant; OAC, oral anticoagulant; TOE, transoesophageal echocardiography; UFH, unfractionated heparin; VKA, vitamin K antagonist. Flowchart for decision-making on cardioversion of AF depending on clinical presentation, AF onset, oral anticoagulation intake, and risk factors for stroke.[a] See Section 6.

ESC Guidelines 3355

Cardiovascular Hospitalization or Death from Any Cause in Patients with Atrial Fibrillation/Atrial Flutter), dronedarone significantly reduced the risk of hospitalization due to cardiovascular events or death as compared with placebo in patients with paroxysmal or persistent AF. The CASTLE-AF trial (Catheter Ablation versus Standard Conventional Treatment in Patients With Left Ventricle Dysfunction and AF) demonstrated that a rhythm control strategy with catheter ablation can improve mortality and morbidity in selected patients with HFrEF and an implanted cardiac device. In end-stage HFrEF, the CASTLE-HTx trial (Catheter Ablation for Atrial Fibrillation in Patients With End-Stage Heart Failure and Eligibility for Heart Transplantation) found, in a single centre, that catheter ablation combined with guideline-directed medical therapy significantly reduced the composite of death from any cause, implantation of left ventricular assist device, or urgent heart transplantation compared with medical treatment. At the same time, however, the CABANA trial (Catheter Ablation versus Anti-arrhythmic Drug Therapy for Atrial Fibrillation) could not demonstrate a significant difference in mortality and morbidity between catheter ablation and standard rhythm and/ or rate control drugs in symptomatic AF patients older than 64 years, or younger than 65 years with risk factors for stroke. EAST-AFNET 4 (Early treatment of Atrial fibrillation for Stroke prevention Trial) reported that implementation of a rhythm control strategy within 1 year compared with usual care significantly reduced the risk of cardiovascular death, stroke, or hospitalization for heart failure or acute coronary syndrome in patients older than 75 years or with cardiovascular conditions. Of note, rhythm control was predominantly pursued with antiarrhythmic drugs (80% of patients in the intervention arm). Usual care consisted of rate control therapy; only when uncontrolled AF-related symptoms occurred was rhythm control considered. Patients in the EAST-AFNET 4 trial all had cardiovascular risk factors but were at an early stage of AF, with more than 50% being in sinus rhythm and 30% being asymptomatic at the start of the study.

Based on all of these studies, this task force concludes that implementation of a rhythm control strategy can be safely instituted and confers amelioration of AF-related symptoms. Beyond control of symptoms, sinus rhythm maintenance should also be pursued to reduce morbidity and mortality in selected groups of patients.

Any rhythm control procedure has an inherent risk of thromboembolism. Patients undergoing cardioversion require at least 3 weeks of therapeutic anticoagulation (adherence to DOACs or INR >2 if VKA) prior to the electrical or pharmacological procedure. In acute settings or when early cardioversion is needed, transoesophageal echocardiography (TOE) can be performed to exclude cardiac thrombus prior to cardioversion. These approaches have been tested in multiple RCTs. In the case of thrombus detection, therapeutic anticoagulation should be instituted for a minimum of 4 weeks followed by repeat TOE to ensure thrombus resolution. When the definite duration of AF is less than 48 hours, cardioversion has typically been considered without the need for pre-procedure OAC or TOE for thrombus exclusion. However, the ‘definite’ onset of AF is often not known, and observational data suggest that stroke/thromboembolism risk is lowest within a much shorter time period. This task force reached consensus that safety should come first. Cardioversion is not recommended if AF duration is longer than 24 hours, unless the patient has already received at least 3 weeks of therapeutic anticoagulation or a TOE is performed to exclude intracardiac thrombus. Most patients should continue OAC for at least 4 weeks post-cardioversion. Only for those without thromboembolic risk factors and sinus rhythm restoration within 24 h of AF onset is post-cardioversion OAC optional. In the presence of any thromboembolic risk factors, long-term OAC should be instituted irrespective of the rhythm outcome.

Recommendation Table 15 — Recommendations for general concepts in rhythm control (see also Evidence Table 15)

RecommendationsClassaLevelb© ESC 2024
Electrical cardioversion is recommended in AF patients with acute or worsening haemodynamic instability to improve immediate patient outcomes.520IC
Direct oral anticoagulants are recommended in preference to VKAs in eligible patients with AF undergoing cardioversion for thromboembolic risk reduction.293,319–321,521IA
Therapeutic oral anticoagulation for at least 3 weeks (adherence to DOACs or INR≥2.0 for VKAs) is recommended before scheduled cardioversion of AF and atrial futter to prevent procedure-related thromboembolism.319–321IB
Transoesophageal echocardiography is recommended if 3 weeks of therapeutic oral anticoagulation has not been provided, for exclusion of cardiac thrombus to enable early cardioversion.319–321,522IB
Oral anticoagulation is recommended to continue for at least 4 weeks in all patients after cardioversion and long-term in patients with thromboembolic risk factor(s) irrespective of whether sinus rhythm is achieved, to prevent thromboembolism.239,319,320,523,524IB
Cardioversion of AF (either electrical or pharmacological) should be considered in symptomatic patients with persistent AF as part of a rhythm control approach.52,525,526IIaB
A wait-and-see approach for spontaneous conversion to sinus rhythm within 48 h of AF onset should be considered in patients without haemodynamic compromise as an alternative to immediate cardioversion.10,525IIaB
Implementation of a rhythm control strategy should be considered within 12 months of diagnosis in selected patients with AF at risk of thromboembolic events to reduce the risk of cardiovascular death or hospitalization.17,527IIaB
Initiation of therapeutic anticoagulation should be considered as soon as possible in the setting of unscheduled cardioversion for AF or atrial futter to prevent procedure-related thromboembolism.319–321,528IIaB
Repeat transoesophageal echocardiography should be considered before cardioversion if thrombus has been identifed on initial imaging to ensure thrombus resolution and prevent peri-procedural thromboembolism.529IIaC
Early cardioversion is not recommended without appropriate anticoagulation or transoesophageal echocardiography if AF duration is longer than 24 h, or there is scope to wait for spontaneous cardioversion.522IIIC

AF, atrial fibrillation; DOAC, direct oral anticoagulant; INR, international normalized ratio of prothrombin time; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

ESC Guidelines

7.2.2. Electrical cardioversion

Electrical cardioversion (ECV) can be safely applied in the elective and acute setting (see Supplementary data online, Additional Evidence Table S18) with sedation by intravenous midazolam, propofol, or etomidate. Structured and integrated care for patients with acuteonset AF at the emergency department is associated with better outcomes without compromising safety. Rates of major adverse clinical events after cardioversion are significantly lower with DOACs compared with warfarin.

Blood pressure monitoring and oximetry should be used routinely. Intravenous atropine or isoproterenol, or temporary transcutaneous pacing, should be available in case of post-cardioversion bradycardia. Biphasic defibrillators are standard because of their superior efficacy compared with monophasic defibrillators. There is no single optimal position for electrodes, with a meta-analysis of 10 RCTs showing no difference in sinus rhythm restoration comparing anterior-posterior with antero-lateral electrode positioning. Applying active compression to the defibrillation pads is associated with lower defibrillation thresholds, lower total energy delivery, fewer shocks for successful ECV, and higher success rates. A randomized trial showed that maximum fixed-energy shocks were more effective than low-escalating energy for ECV.

Immediate administration of vernakalant, or pre-treatment for 3–4 days with flecainide, ibutilide, propafenone, or amiodarone improves the rate of successful ECV and can facilitate long-term maintenance of sinus rhythm by preventing early recurrent AF. A meta-analysis demonstrated that pretreatment with amiodarone (200–800 mg/day for 1–6 weeks precardioversion) and post-treatment (200 mg/day) significantly improved the restoration and maintenance of sinus rhythm after ECV of AF.

In some cases of persistent AF there is no clear relationship between the arrhythmia and symptoms. In these cases, restoring sinus rhythm by ECV might serve to confirm the impact of arrhythmia on symptoms and/or on heart failure symptoms and signs. Such an approach might be useful to identify truly asymptomatic individuals, to assess the impact of AF on LV function in patients with HFrEF, and to distinguish AF-related symptoms from heart failure symptoms.

Recommendation Table 16 — Recommendations for electrical cardioversion of AF (see also Evidence Table 16)

RecommendationsClassaLevelb© ESC 2024
Electrical cardioversion as a diagnostic tool should be considered in patients with persistent AF where there is uncertainty about the value of sinus rhythm restoration on symptoms, or to assess improvement in left ventricular function.548IIaC

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

7.2.3. Pharmacological cardioversion

Pharmacological cardioversion to sinus rhythm is an elective procedure in haemodynamically stable patients. It is less effective than electrical cardioversion for restoration of sinus rhythm, with timing of cardioversion being a significant determinant of success. There are limited contemporary data on the true efficacy of pharmacological cardioversion, which are likely biased by the spontaneous restoration of sinus

rhythm in 76%–83% of patients with recent-onset AF (10%–18% within the first 3 h, 55%–66% within 24 h, and 69% within 48 h).

The choice of a specific drug is based on the type and severity of concomitant heart disease ( Table 13). A meta-analysis demonstrated that intravenous vernakalant and flecainide have the highest conversion rate within 4 h, possibly allowing discharge from the emergency department and reducing hospital admissions. Intravenous and oral formulations of Class IC antiarrhythmics (flecainide more so than propafenone) are superior regarding conversion rates within 12 h, while amiodarone efficacy is exhibited in a delayed fashion (within 24 h). Pharmacological cardioversion does not require fasting, sedation, or anaesthesia. Anticoagulation should be started or continued according to a formal (re-)assessment of thromboembolic risk.

A single self-administered oral dose of flecainide or propafenone (pill-in-the-pocket) is effective in symptomatic patients with infrequent and recent-onset paroxysmal AF. Safe implementation of this strategy requires patient screening to exclude sinus node dysfunction, atrioventricular conduction defects, or Brugada syndrome, as well as prior in-hospital validation of its efficacy and safety. An atrioventricular node-blocking drug should be instituted in patients treated with Class IC AADs to avoid 1:1 conduction if the rhythm transforms to AFL.

Recommendation Table 17 — Recommendations for pharmacological cardioversion of AF (see also Evidence Table 17)

RecommendationsClassaLevelb© ESC 2024
Intravenous fecainide or propafenone is recommended when pharmacological cardioversion of recent-onset AF is desired, excluding patients with severe left ventricular hypertrophy, HFrEF, or coronary artery disease.562–566IA
Intravenous vernakalant is recommended when pharmacological cardioversion of recent-onset AF is desired, excluding patients with recent ACS, HFrEF, or severe aortic stenosis.562–568IA
Intravenous amiodarone is recommended when cardioversion of AF in patients with severe left ventricular hypertrophy, HFrEF, or coronary artery disease is desired, accepting there may be a delay in cardioversion.473,569,570IA
A single self-administered oral dose of fecainide or propafenone (pill-in-the-pocket) should be considered for patient-led cardioversion in selected patients with infrequent paroxysmal AF, after effcacy and safety assessment and excluding those with severe left ventricular hypertrophy, HFrEF, or coronary artery disease.560,571–573IIaB
Pharmacological cardioversion is not recommended for patients with sinus node dysfunction, atrioventricular conduction disturbances, or prolonged QTc (>500 ms), unless risks for proarrhythmia and bradycardia have been considered.IIIC

ACS, acute coronary syndromes; AF, atrial fibrillation; HFrEF, heart failure with reduced ejection fraction. aClass of recommendation. bLevel of evidence.

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Table 13 Antiarrhythmic drugs for sinus rhythm restoration

DrugAdministration routeInitial dosingSubsequent dosing [long- term approach]Acute success rate and time to sinus rhythmContraindications and precautions© ESC 2024
FlecainideOral200–300 mg[long-term 50−150 mg twice daily]50%–60% at 3 h and 75%–85% at 6–8 h (3–8 h)• Should not be used in patients with severe structural or coronary artery disease, Brugada syndrome, or severe renal failure (CrCl <35 mL/min/1.73 m2). • Prior documentation of safety and effcacy in an inpatient setting is recommended prior to pill-in-the-pocket use. • An AVN-blocking agent should be administered to avoid 1:1 conduction if transformation to AFL. • Drug infusion should be discontinued in case of QRS widening>25% or bundle branch block occurrence. • Caution is needed in patients with sinus node disease and AVN dysfunction. • Do NOT use for conversion of atrial futter.
Intravenous1–2 mg/kg over 10 min52%–95% (Up to 6 h)
PropafenoneOral450–600 mg[long-term 150-300 mg three times daily]45%–55% at 3 h, 69%–78% at 8 h (3–8 h)
Intravenous1.5–2 mg/kg over 10 min43%–89% (Up to 6 h)
AmiodaroneIntravenous (/oral)300 mg intravenous over 30–60 min900-1200 mg intravenous over 24 hours (or 200 mg oral three times daily for 4 weeks). [long-term 200 mg oral daily]44% (8–12 h to several days)• May cause phlebitis (use a large peripheral vein, avoid i.v. administration>24 h and use preferably volumetric pump). • May cause hypotension, bradycardia/ atrioventricular block, QT prolongation. • Only if no other option in patients with hyperthyroidism (risk of thyrotoxicosis). • Consider the broad range of drug interactions.
IbutilideIntravenous1 mg over 10 min (0.01 mg/kg if body weight<60 kg)1 mg over 10 min (10–20 min after the initial dose)31%–51% (30–90 min) in AF 60–75% in AFL (60 min)• Should be used in the setting of a cardiac care unit as it may cause QT prolongation and torsades de pointes. • ECG monitoring for at least 4 h after administration to detect any proarrhythmic effects. • Should not be used in patients with prolonged QT, severe LVH, or low LVEF.
VernakalantIntravenous3 mg/kg over 10 min (maximum 339 mg)2 mg/kg over 10 min (10–15 min after the initial dose) (maximum 226 mg)50% within 10 min• Should not be used in patients with arterial hypotension (SBP<100 mmHg), recent ACS (within 1 month), NYHA III or IV HF, QT prolongation or severe aortic stenosis. • May cause arterial hypotension, QT prolongation, QRS widening, or non-sustained ventricular tachycardia.

ACS, acute coronary syndromes; AF, atrial fibrillation; AFL, atrial flutter; AVN, atrioventricular node; CrCl, creatinine clearance; ECG, electrocardiogram; HF, heart failure; LVEF, left ventricular ejection fraction; LVH, left ventricular hypertrophy; NYHA, New York Heart Association; QT, QT interval; SBP, systolic blood pressure. Long-term dosage for maintenance of sinus rhythm is indicated in [square brackets]. Long-term oral dosing for dronedarone is 400 mg twice daily, and for sotalol 80-160 mg twice daily.

7.2.4. Antiarrhythmic drugs

The aims of long-term rhythm control are to maintain sinus rhythm, improve quality of life, slow the progression of AF, and potentially reduce morbidity related to AF episodes (see Supplementary data online, Additional Evidence Table S19). Antiarrhythmic drugs do not eliminate recurrences of AF, but in patients with paroxysmal or persistent AF, a recurrence is not equivalent to treatment

failure if episodes are less frequent, briefer, or less symptomatic. Antiarrhythmic drugs also have a role for long-term rhythm control in AF patients that are considered ineligible or unwilling to undergo catheter or surgical ablation.

Before starting AAD treatment, reversible triggers should be identified and underlying comorbidities treated to reduce the arrhythmogenic substrate, prevent progression of AF, and facilitate maintenance of sinus

ESC Guidelines

rhythm. The RACE 3 trial, including patients with early persistent AF and mild-to-moderate heart failure (predominantly HFpEF and HFmrEF), showed that targeted therapy of underlying conditions improved sinus rhythm maintenance at 1 year (75% vs. 63% as compared with standard care). The selection of an AAD for long-term rhythm control requires careful evaluation that takes into account AF type, patient parameters, and safety profile. It also includes shared decision-making, balancing the benefit/risk ratio of AADs in comparison with other strategies. Notably, recent evidence has shown that careful institution of AADs can be performed safely.

The long-term effectiveness of AADs is limited. In a meta-analysis of 59 RCTs, AADs reduced AF recurrences by 20%–50% compared with no treatment, placebo, or drugs for rate control. When one AAD fails to reduce AF recurrences, a clinically acceptable response may be achieved with another drug, particularly if from a different class. Combinations of AADs are not recommended. The data available suggest that AADs do not produce an appreciable effect on mortality or other cardiovascular complications with the exception of increased mortality signals for sotalol and amiodarone. In contrast, use of AADs within a rhythm control strategy can be associated with reduction of morbidity and mortality in selected patients.

All AADs may produce serious cardiac (proarrhythmia, negative inotropism, hypotension) and extracardiac adverse effects (organ toxicity, predominantly amiodarone). Drug safety, rather than efficacy, should determine the choice of drug. The risk of proarrhythmia increases in patients with structural heart disease. Suggested doses for long-term oral AAD are presented in Table 13.

Recommendation Table 18 — Recommendations for antiarrhythmic drugs for long-term maintenance of sinus rhythm (see also Evidence Table 18)

RecommendationsClassaLevelb
Amiodarone is recommended in patients with AF and HFrEF requiring long-term antiarrhythmic drug therapy to prevent recurrence and progression of AF, with careful consideration and monitoring for extracardiac toxicity.577,585–587IA
Dronedarone is recommended in patients with AF requiring long-term rhythm control, including those with HFmrEF, HFpEF, ischaemic heart disease, or valvular disease to prevent recurrence and progression of AF.512,577,588,589IA
Flecainide or propafenone is recommended in patients with AF requiring long-term rhythm control to prevent recurrence and progression of AF, excluding those with impaired left ventricular systolic function, severe left ventricular hypertrophy, or coronary artery disease.526,577,585,590IA
Concomitant use of a beta-blocker, diltiazem, or verapamil should be considered in AF patients treated with fecainide or propafenone, to prevent 1:1 conduction if their rhythm is transformed to atrial futter.IIaC

Continued

Sotalol may be considered in patients with AF requiring long-term rhythm control with normal LVEF or coronary artery disease to prevent recurrence and progression of AF, but requires close monitoring of QT interval, serum potassium levels, renal function, and other proarrhythmia risk factors.585,587IIbA© ESC 2024
Antiarrhythmic drug therapy is not recommended in patients with advanced conduction disturbances unless antibradycardia pacing is provided.IIIC

AF, atrial fibrillation; HFmrEF, heart failure with mildly reduced ejection fraction; HFpEF, heart failure with preserved ejection fraction; HFrEF, heart failure with reduced ejection fraction; LVEF, left ventricular ejection fraction. aClass of recommendation. bLevel of evidence.

7.2.5. Catheter ablation

Catheter ablation prevents AF recurrences, reduces AF burden, and improves quality of life in symptomatic paroxysmal or persistent AF where the patient is intolerant or does not respond to AAD. Multiple RCTs have provided evidence in favour of catheter ablation as a first-line approach for rhythm control in patients with paroxysmal AF, with a similar risk of adverse events as compared with initial AAD treatment (see Supplementary data online, Additional Evidence Table S20). In contrast, it is not clear whether first-line ablation is superior to drug therapy in persistent AF. Catheter ablation may also have a role in patients with symptoms due to prolonged pauses upon AF termination, where non-randomized data have shown improved symptoms, and avoidance of pacemaker implantation.

Pulmonary vein isolation (PVI) remains the cornerstone of AF catheter ablation, but the optimal ablation strategy has not been clarified in the non-paroxysmal AF population. New technologies are emerging, such as pulsed field ablation, in which high-amplitude electrical pulses are used to ablate the myocardium by electroporation with high tissue specificity. In a single-blind RCT of 607 patients, pulsed field ablation was non-inferior for efficacy and safety endpoints compared with conventional radiofrequency or cryoballoon ablation. Regarding timing of ablation, a small RCT found that delaying catheter ablation in patients with paroxysmal or persistent AF by 12 months (while on optimized medical therapy) did not impact on arrhythmiafree survival compared with ablation within 1 month.

As with any type of rhythm control, many patients in clinical practice will not be suitable for catheter ablation due to factors that reduce the likelihood of a positive response, such as left atrial dilatation. Definitive evidence that supports the prognostic benefit of catheter ablation is needed before this invasive treatment can be considered for truly asymptomatic patients. As previously noted, the CABANA trial did not confirm a benefit of catheter ablation compared with medical therapy, although high crossover rates and low event rates may have diluted the treatment effect. Therefore, only highly selected asymptomatic patients could be candidates for catheter ablation, and only after detailed discussion of associated risks and potential benefit of delaying AF progression. Randomized trials have shown that AF catheter ablation in patients with HFrEF significantly reduces arrhythmia recurrence and increases ejection fraction, with improvement in clinical outcomes and mortality also observed in selected patients. Several

ESC Guidelines 3359

characteristics, including but not limited to AF type, left atrial dilatation, and the presence of atrial and/or ventricular fibrosis, could refine patient selection to maximize outcome benefit from AF catheter ablation in patients with HFrEF. The prognostic value of catheter ablation in patients with HFpEF is less well established than for HFrEF.

Recent registries and trials report varying rates of peri-procedural serious adverse events associated with catheter ablation (2.9%–7.2%) with a very low 30 day mortality rate (<0.1%). Operator experience and procedural volume at the ablation centre are critical, since they are associated with complication rates and 30 day mortality.

Intermittent rhythm monitoring has typically been used to detect AF relapses following catheter ablation. Recent technology developments such as smartwatch or smartphone photoplethysmography and wearable patches may have an emerging role in post-ablation monitoring. In addition, implantable loop recorders have been used to quantify AF burden before and after ablation as an additional endpoint beyond binary AF elimination. Management of arrhythmia recurrence post-ablation is an informed, shared decision-making process driven by available options for symptom control. In the post-AF ablation context, there is data supporting a role for AAD continuation or reinitiation, even for previously ineffective drugs. A short-term AAD treatment (2–3 months) following ablation reduces early recurrences of AF, but does not affect late recurrences or 1 year clinical outcomes. Repeat PVI should be offered in patients with AF recurrence if symptom improvement was demonstrated after the first ablation, with shared decision-making and clear goals of treatment.

Recommendation Table 19 — Recommendations for catheter ablation of AF (see also Evidence Table 19)

RecommendationsClassaLevelb
Shared decision-making
Shared decision-making is recommended when considering catheter ablation for AF, taking into account procedural risks, likely benefts, and risk factors for AF recurrence.128,210,503,646IC
AF patients resistant or intolerant to antiarrhythmic drug therapy
Catheter ablation is recommended in patients with paroxysmal or persistent AF resistant or intolerant to antiarrhythmic drug therapy to reduce symptoms, recurrence, and progression of AF.3,15,503,505,506,508IA
First-line rhythm control therapy
Catheter ablation is recommended as a frst-line option within a shared decision-making rhythm control strategy in patients with paroxysmal AF, to reduce symptoms, recurrence, and progression of AF.16,591–594IA
Catheter ablation may be considered as a frst-line option within a shared decision-making rhythm control strategy in selected patients with persistent AF to reduce symptoms, recurrence, and progression of AF.IIbC

Continued

Patients with heart failure
AF catheter ablation is recommended in patients with AF and HFrEF with high probability of tachycardia-induced cardiomyopathy to reverse left ventricular dysfunction.604,611IB
AF catheter ablation should be considered in
selected AF patients with HFrEF to reduce HF hospitalization and prolong survival.4,513,514,604,610,612 Sinus node disease/tachycardia–bradycardia AF catheter ablation should be considered in patients with AF-related bradycardia or sinus pauses on AF termination to improve symptoms and avoid pacemaker implantation.595–598 Recurrence after catheter ablation Repeat AF catheter ablation should be considered in patients with AF recurrence after initial catheter ablation, provided the patient’s symptoms were improved after the initial PVI or after failed initial PVI, to reduce symptoms, recurrence, and progression of AF.643–645IIa syndrome IIa IIaB C B© ESC 2024

AF, atrial fibrillation; HF, heart failure; HFrEF, heart failure with reduced ejection fraction; PVI, pulmonary vein isolation. aClass of recommendation. bLevel of evidence.

7.2.6. Anticoagulation in patients undergoing catheter ablation

The presence of left atrial thrombus is a contraindication to catheterbased AF ablation due to the risk of thrombus dislodgement leading to ischaemic stroke. Patients planned for catheter ablation of AF with an increased risk of thromboembolism should be on OAC for at least 3 full weeks prior to the procedure.

There is a wide range in practice for visualization of intra-atrial thrombi prior to catheter ablation, including TOE, intracardiac echocardiography, or delayed phase cardiac computed tomography (CT). The prevalence of left atrial thrombus was 1.3% and 2.7% in two meta-analyses of observational studies in patients planned for catheter ablation of AF on adequate OAC. The prevalence of left atrial thrombus was higher in patients with elevated stroke risk scores, and in patients with non-paroxysmal compared with paroxysmal AF. In addition, several patient subgroups with AF have increased risk of ischaemic stroke and intracardiac thrombus even if treated with adequate anticoagulation, including those with cardiac amyloidosis, rheumatic heart disease, and hypertrophic cardiomyopathy (HCM). Cardiac imaging before catheter ablation should be considered in these high-risk patient groups regardless of preceding effective OAC. Observational studies suggest that patients with a low thromboembolic risk profile may be managed without visualization of the LAA, but no RCTs have been performed (see Supplementary data online, Additional Evidence Table S21).

For patients who have been anticoagulated prior to the ablation procedure it is recommended to avoid interruption of OAC (see Supplementary data online, Additional Evidence Table S22). Patients with interrupted OAC showed an increase in silent stroke detected by brain magnetic resonance imaging (MRI) as compared with those with uninterrupted OAC. In a true uninterrupted

ESC Guidelines

DOAC strategy for once-daily dosing, a pre-procedural shift to evening intake might be considered to mitigate bleeding risk. Randomized trials show comparable safety and efficacy with minimally interrupted OAC (withholding the morning DOAC dose on the day of the procedure) and a totally uninterrupted peri-ablation OAC strategy.

Anticoagulation with heparin during AF ablation is common practice. Post-ablation DOACs should be continued as per the dosing regimen when haemostasis has been achieved. All patients should be kept on an OAC for at least 2 months after an AF ablation procedure irrespective of estimated thromboembolic risk (see Supplementary data online, Additional Evidence Table S23). Meta-analyses of observational studies have tried to assess the safety of stopping OAC treatment after catheter ablation for AF, but the results have been heterogenous. Until the completion of relevant RCTs (e.g. NCT02168829), it is recommended to continue OAC therapy post-AF ablation according to the patient’s CHA2DS2-VA score and not the perceived success of the ablation procedure.

Recommendation Table 20 — Recommendations for anticoagulation in patients undergoing catheter ablation (see also Evidence Table 20)

RecommendationsClassaLevelb© ESC 2024
Initiation of oral anticoagulation is recommended at least 3 weeks prior to catheter-based ablation in AF patients at elevated thromboembolic risk, to prevent peri-procedural ischaemic stroke and thromboembolism.554,647IC
Uninterrupted oral anticoagulation is recommended in patients undergoing AF catheter ablation to prevent peri-procedural ischaemic stroke and thromboembolism.664,665IA
Continuation of oral anticoagulation is recommended for at least 2 months after AF ablation in all patients, irrespective of rhythm outcome or CHA2DS2-VA score, to reduce the risk of peri-procedural ischaemic stroke and thromboembolism.554,663IC
Continuation of oral anticoagulation is recommended after AF ablation according to the patient’s CHA2DS2-VA score, and not the perceived success of the ablation procedure, to prevent ischaemic stroke and thromboembolism.554IC
Cardiac imaging should be considered prior to catheter ablation of AF in patients at high risk of ischaemic stroke and thromboembolism despite taking oral anticoagulation to exclude thrombus.649,650IIaB

AF, atrial fibrillation; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years. aClass of recommendation. bLevel of evidence.

7.2.7. Endoscopic and hybrid AF ablation

Minimally invasive surgical AF ablation can be performed via a thoracoscopic approach or a subxiphoid approach. The term endoscopic covers both strategies. Hybrid ablation approaches have been developed where endoscopic epicardial ablation on the beating heart is performed in combination with endocardial catheter ablation, either in a simultaneous or sequential procedure. The rationale for combining an endocardial with an epicardial approach is that a more effective transmural ablation strategy can be pursued.

For paroxysmal AF, an endoscopic or hybrid ablation approach may be considered after a failed percutaneous catheter ablation strategy. Long-term follow-up of the FAST RCT (mean of 7.0 years), which included patients with paroxysmal and persistent AF, found arrhythmia recurrence was common but substantially lower with thoracoscopic ablation than catheter ablation: 34/61 patients (56%) compared with 55/63 patients (87%), with P <.001 for the comparison. For persistent AF, endoscopic or hybrid ablation approaches are suitable as a first procedure to maintain long-term sinus rhythm in selected patients. A meta-analysis of three RCTs confirmed a lower rate of atrial arrhythmia recurrence after thoracoscopic vs. catheter ablation (incidence rate ratio, 0.55; 95% CI, 0.38–0.78; with no heterogeneity between trials). An RCT with 12 month follow-up published after the meta-analysis in patients with longstanding persistent AF found no difference in arrhythmia freedom comparing thoracoscopic with catheter ablation. Although overall morbidity and mortality of both techniques is low, endoscopic and hybrid ablation have higher complication rates than catheter ablation, but similar long-term rates of the composite of mortality, MI, or stroke.

More recent trials have assessed the efficacy and safety of the hybrid epicardial-plus-endocardial approach in persistent AF refractory to AAD therapy, including a single-centre RCT and two multicentre RCTs. Across these trials, hybrid ablation was consistently superior to catheter ablation alone for maintaining long-term sinus rhythm, without significant differences in major adverse events. Notably, these studies were typically performed in highly experienced centres (see Supplementary data online, Additional Evidence Table S24).

Similar to other rhythm control approaches, this task force recommends that OAC are continued in all patients who have a risk of thromboembolism, irrespective of rhythm outcome, and regardless of LAA exclusion performed as part of the surgical procedure.

Recommendation Table 21 — Recommendations for endoscopic and hybrid AF ablation (see also Evidence Table 21)

RecommendationsClassaLevelb
Continuation of oral anticoagulation is recommended in patients with AF at elevated thromboembolic risk after concomitant, endoscopic, or hybrid AF ablation, independent of rhythm outcome or LAA exclusion, to prevent ischaemic stroke and thromboembolism.IC
Continued

ESC Guidelines 3361

Endoscopic and hybrid ablation procedures should be considered in patients with symptomatic persistent AF refractory to AAD therapy to prevent symptoms, recurrence, and progression of AF, within a shared decision-making rhythm control team of electrophysiologists and surgeons.667–671,674IIaA© ESC 2024
Endoscopic and hybrid ablation procedures may be considered in patients with symptomatic paroxysmal AF refractory to AAD therapy and failed percutaneous catheter ablation strategy to prevent symptoms, recurrence, and progression of AF, within a shared decision-making rhythm control team of electrophysiologists and surgeons.668,669IIbB

AAD, antiarrhythmic drugs; AF, atrial fibrillation; LAA, left atrial appendage. aClass of recommendation. bLevel of evidence.

7.2.8. AF ablation during cardiac surgery

Atrial fibrillation is a significant risk factor for early mortality, late mortality, and stroke in patients referred for cardiac surgery. The best validated method of surgical ablation is the Maze procedure, consisting of a pattern of transmural lesions including PVI, with subsequent modifications using bipolar radiofrequency and/or cryothermy ablation with LAA amputation (see Supplementary data online, Additional Evidence Table S25). Education and training, close co-operation within a multidisciplinary team, and shared decision-making can improve the quality and outcomes of surgical ablation.

A number of RCTs have shown that surgical AF ablation during cardiac surgery increases freedom from arrhythmia recurrence. Performing surgical AF ablation, mainly targeting those patients needing mitral valve surgery, is not associated with increased morbidity or mortality. Observational data, including large registries, have supported the potential value of surgical AF ablation, but further RCTs are needed to evaluate which patients should be selected, and whether this approach contributes to the prevention of stroke, thromboembolism, and death.

Data on pacemaker implantation rates after surgical AF ablation are variable and are likely influenced by centre experience and the patients treated (e.g. underlying sinus node disease). In a systematic review of 22 RCTs (1726 patients), permanent pacemaker implantation rates were higher with surgical AF ablation than without concomitant AF surgery (6.0% vs. 4.1%; RR, 1.69; 95% CI, 1.12–2.54). Observational registry data from contemporary cohorts (2011– 2020) suggest an overall pacemaker rate post-operatively of 2.1% in patients selected for surgical AF ablation, with no discernible impact of surgical ablation on the need for a pacemaker, but higher rates in those needing multivalve surgery. With a safetyfirst approach in mind, imaging is advised during surgical AF ablation to exclude thrombus and help to plan the surgical approach (e.g. with TOE), regardless of effective pre-procedural anticoagulant use.

Recommendation Table 22 — Recommendations for AF ablation during cardiac surgery (see also Evidence Table 22)

Recommendations Classa Levelb
Concomitant surgical ablation is recommended in
patients undergoing mitral valve surgery and AF
7.2.9. Atrial tachycardia after pulmonary vein isolation After any ablation for AF, recurrent arrhythmias may manifest as AF, but also as atrial tachycardia (AT). Although AT may be perceived as a step in the right direction by the treating physician, this view is often not shared by the patient because AT can be equally or more symptom- atic than the original AF. Conventionally, an early arrhythmia recur- rence post-PVI (whether AT, AF, or futter) is considered potentially transitory.708 Recent trials using continuous implantable loop recorders for peri-procedural monitoring have provided insight into the incidence and signifcance of early arrhythmia recurrences, and have confrmed a link between early and later recurrence.709 Discussion of management options for AT post-ablation should ideally involve a multidisciplinary team with experience in interventional management of complex ar- rhythmias, considering technical challenges, procedural effcacy, and safety, in the context of patient preferences. 8. [E] Evaluation and dynamic suitable for a rhythm control strategy to prevent symptoms and recurrence of AF, with shared decision-making supported by an experienced team of electrophysiologists and arrhythmia surgeons.683– 685,701 I A Intraprocedural imaging for detection of left atrial thrombus in patients undergoing surgical ablation is recommended to guide surgical strategy, independent of oral anticoagulant use, to prevent peri-procedural ischaemic stroke and thromboembolism. I C Concomitant surgical ablation should be considered in patients undergoing non-mitral valve cardiac surgery and AF suitable for a rhythm control strategy to prevent symptoms and recurrence of AF, with shared decision-making supported by an experienced team of electrophysiologists and arrhythmia surgeons.701,703–707 IIa B AF, atrial fbrillation. aClass of recommendation. bLevel of evidence.© ESC 2024Downloaded from https://academic.oup.com/eurheartj/article/45/36/3314/7738779 by Erasmus University Rotterdam user on 11 February 2025

8. [E] Evaluation and dynamic reassessment

The development and progression of AF results from continuous interactions between underlying mechanisms (electrical, cellular, neurohormonal, and haemodynamic), coupled with a broad range of clinical factors and associated comorbidities. Each individual factor

ESC Guidelines

has considerable variability over time, affecting its contribution to the AF-promoting substrate. The risk profile of each patient is also far from static, and requires a dynamic mode of care to ensure optimal AF management. Patients with AF require periodic reassessment of therapy based on this changing risk status if we are to improve the overall quality of care. Timely attention to modifiable factors and underpinning comorbidities has the potential to slow or reverse the progression of AF, increase quality of life, and prevent adverse outcomes such as heart failure, thromboembolism, and major bleeding.

The [E] in AF-CARE encompasses the range of activity needed by healthcare professionals and patients to: (i) thoroughly evaluate associated comorbidities and risk factors that can guide treatment; and (ii) provide the dynamic assessment needed to ensure that treatment plans remain suited to that particular patient. This task force recommends an adaptive strategy that not only reacts to changes notified by a patient, but also proactively seeks out issues where altering management could impact on patient wellbeing. Avoidance of unnecessary and costly follow-up is also inherent in this framework, with educated and empowered patients contributing to identifying the need for access to specialist care or an escalation of management. The patient-centred, shared decision philosophy is embedded to improve efficiency in models of care and to address the needs of patients with AF.

Medical history and the results of any tests should be regularly reevaluated to address the dynamic nature of comorbidities and risk factors. This may have impact on therapeutic decisions; e.g. resumption of full-dose DOAC therapy after improvement in the patient’s renal function. The timing of review of the AF-CARE pathway is patient specific and should respond to changes in clinical status. In most cases, this task force advises re-evaluation 6 months after initial presentation, and then at least annually by a healthcare professional in primary or secondary care (see Figure 3).

8.1. Implementation of dynamic care

A multidisciplinary-based approach is advocated to improve implementation of dynamic AF-CARE (see Figure 2); although potentially resource intensive, this is preferred to more simplistic or opportunistic methods. For example, in a pragmatic trial of 47 333 AF patients identified through health insurance claims, there was no difference in OAC initiation at 1 year in those randomized to a single mailout of patient and clinician education, compared with those in the usual care group. For co-ordination of care there is a core role for cardiologists, general practitioners, specialized nurses, and pharmacists. If needed, and depending on local resources, others may also be involved (cardiac surgeons, physiotherapists, neurologists, psychologists, and other allied health professionals). It is strongly advocated that one core team member coordinates care, and that additional team members become involved according to the needs of the individual patient throughout their AF trajectory.

Several organizational models of integrated care for AF have been evaluated, but which components are most useful remains unclear. Some models include a multidisciplinary team, while others are nurse-led or cardiologist-led. Several published models used computerized decision support systems or electronic health applications. Evaluation within RCTs has demonstrated mixed results due to the variety of methods tested and differences in regional care. Several studies report significant improvements with respect to adherence to anticoagulation, cardiovascular mortality, and hospitalization relative to standard of care. However, the

RACE 4 (IntegRAted Chronic Care Program at Specialized AF Clinic Versus Usual CarE in Patients with Atrial Fibrillation) trial, which included 1375 patients, failed to demonstrate superiority of nurse-led over usual care. New studies of the components and optimal models for delivery for integrated care approaches in routine practice are ongoing (ACTRN12616001109493, NCT03924739).

8.2. Improving treatment adherence

Advances in the care of patients with AF can only be effective if appropriate tools are available to support the implementation of the treatment regimen. A number of factors are related to the optimal implementation of care at the level of: (i) the individual patient (culture, cognitive impairment, and psychological status); (ii) the treatment (complexity, side effects, polypharmacy, impact on daily life, and cost); (iii) the healthcare system (access to treatment and multidisciplinary approach); and (iv) the healthcare professional (knowledge, awareness of guidelines, expertise, and communication skills). A collaborative approach to patient care, based upon shared decision-making and goals tailored to individual patient needs, is crucial in promoting ongoing patient adherence to the agreed treatment regimen. Even when treatment seems feasible for the individual, patients often lack access to reliable and up-to-date information about risks and benefits of various treatment options, and consequently are not empowered to engage in their own management. A sense of ownership that promotes the achievement of joint goals can be encouraged through the use of educational programmes, websites (such as https://afibmatters.org), app-based tools, and individually tailored treatment protocols which take into account gender, ethnic, socioeconomic, environmental, and work factors. In addition, practical tools (e.g. schedules, apps, brochures, reminders, pillboxes) can help to implement treatment in daily life. Regular review by members of the multidisciplinary team enables the evolution of a flexible and responsive management regimen that the patient will find easier to follow.

8.3. Cardiac imaging

A TTE is a valuable asset across all four AF-CARE domains when there are changes in the clinical status of an individual patient ( Figure 13). The key findings to consider from an echocardiogram are any structural heart disease (e.g. valvular disease or left ventricular hypertrophy), impairment of left ventricular function (systolic and/or diastolic to classify heart failure subtype), left atrial dilatation, and right heart dysfunction. To counter irregularity when in AF, obtaining measurements in cardiac cycles that follow two similar RR intervals can improve the value of parameters compared with sequential averaging of cardiac cycles. Contrast TTE or alternative imaging modalities may be required where image quality is poor, and quantification of left ventricular systolic function is needed for decisions on rate or rhythm control. Other cardiac imaging techniques, such as cardiac magnetic resonance (CMR), CT, TOE, and nuclear imaging can be valuable when: (i) TTE quality is suboptimal for diagnostic purposes; (ii) additional information is needed on structure, substrate, or function; and (iii) to support decisions on interventional procedures (see Supplementary data online, Figure S1). As with TTE, other types of cardiac imaging can be challenging in the context of AF irregularity or with rapid heart rate, requiring technique-specific modifications when acquiring ECG-gated sequences.

ESC Guidelines 3363

AF-CARE Objective for Example of Assessment pathway imaging pathology Left ventricular ejection fraction, Cardiac amyloid wall motion abnormalities, diastolic indices, right ventricular function and To identify comorbidities which left ventricular hypertrophy to C are associated with determine subtype and aetiology of heart failure recurrence and Comorbidity and risk progression of AF Detection of pericardial fluid or factor management pericardial disease Detection of valvular disease Detection of heart failure for Clot in LAA To determine CHA2DS2-VA score stroke risk, choice Detection of moderate-severe A of anticoagulant mitral stenosis to determine choice of anticoagulation drug and ensure Avoid stroke and safety for Transoesophageal echocardiogram thromboembolism cardioversion for left atrial appendage assessment to exclude thrombus prior to cardioversion Left ventricular ejection fraction to Severe LV determine choice of rate control impairment To determine optimal Severity of valvular disease to R choice of rate and determine choice of rhythm control rhythm control Left ventricular size and function to Reduce symptoms strategy and likely determine choice of rhythm control success of ablation by rate and Left atrial size and function to rhythm control determine risk of arrhythmia recurrence following ablation Mixed mitral valve disease Reassess known valve disease for To detect changes in E increase in severity the patient's heart structure and function Reassess left ventricular size and Evaluation and which would affect function if there is a change in the dynamic their management plan patient’s clinical status or symptoms reassessment

Figure 13 Relevance of echocardiography in the AF-CARE pathway. AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; LAA, left atrial appendage; LV, left ventricle.

8.4. Patient-reported outcome measures

Patients with AF have a lower quality of life compared with the general population. Improvement in quality of life and functional status should play a key role in assessing and reassessing treatment decisions (see Supplementary data online, Additional Evidence Table S26). Patient-reported outcome measures are valuable to measure quality of life, functional status, symptoms, and treatment burden for patients

with AF over time. Patient-reported outcome measures are playing an increasing role in clinical trials to assess the success of treatment; however, they remain under-utilized. They can be divided into generic or disease-specific tools, with the latter helping to provide insight into AF-related impacts. However, multimorbidity can still confound the sensitivity of all PROMs, impacting on association with other established metrics of treatment performance such as mEHRA symptom

ESC Guidelines

class and natriuretic peptides. Intervention studies have demonstrated an association between improvement in PROM scores and reduction in AF burden and symptoms.

Atrial fibrillation-specific questionnaires include the AF 6 (AF6), Atrial Fibrillation Effect on QualiTy-of-Life (AFEQT), the Atrial Fibrillation Quality of Life Questionnaire (AFQLQ), the Atrial Fibrillation Quality of Life (AF-QoL), and the Quality of Life in Atrial Fibrillation (QLAF). The measurement properties of most of these tools lack sufficient validation. The International Consortium for Health Outcomes Measurement (ICHOM) working group recommends the use of the AFEQT PROM or a symptom questionnaire called the Atrial Fibrillation Severity Scale (AFSS) for measuring exercise tolerance and the impact of symptoms in AF. Through wider use of patient experience measures, there is an opportunity at the institutional level to improve the quality of care delivered to patients with AF.

Recommendation Table 23 — Recommendations to improve patient experience (see also Evidence Table 23)

RecommendationsClassaLevelb© ESC 2024
Evaluating quality of care and identifying opportunities for improved treatment of AF should be considered by practitioners and institutions to improve patient experiences.49–55IIaB

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

9. The AF-CARE pathway in specific clinical settings

The following sections detail specific clinical settings where approaches to AF-CARE may vary. Unless specially discussed, measures for [C] comorbidity and risk factor management, [A] avoidance of stroke and thromboembolism, [R] rate and rhythm control, and [E] evaluation and dynamic reassessment should follow the standard pathways introduced in Section 4.

9.1. AF-CARE in unstable patients

Unstable patients with AF include those with haemodynamic instability caused by the arrhythmia or acute cardiac conditions, and severely ill patients who develop AF (sepsis, trauma, surgery, and particularly cancer-related surgery). Conditions such as sepsis, adrenergic overstimulation, and electrolyte disturbances contribute to onset and recurrence of AF in these patients. Spontaneous restoration of sinus rhythm has been reported in up to 83% during the first 48 h after appropriate treatment of the underlying cause.

Emergency electrical cardioversion is still considered the first-choice treatment if sinus rhythm is thought to be beneficial, despite the limitation of having a high rate of immediate relapse. Amiodarone is a second-line option because of its delayed activity; however, it may be an appropriate alternative in the acute setting. In a multicentre cohort study carried out in the United Kingdom and the United States of America, amiodarone and beta-blockers were similarly effective for

rate control in intensive care patients, and superior to digoxin and calcium channel blockers. The ultra-short acting and highly selective betablocker landiolol can safely control rapid AF in patients with low ejection fraction and acutely decompensated heart failure, with a limited impact on myocardial contractility or blood pressure.

9.2. AF-CARE in acute and chronic

coronary syndromes

The incidence of AF in acute coronary syndromes (ACS) ranges from 2% to 23%. The risk of new-onset AF is increased by 60%–77% in patients suffering an MI, and AF may be associated with an increased risk of ST-segment elevation myocardial infarction (STEMI) or non-STEMI ACS. Overall, 10%–15% of AF patients undergo percutaneous intervention (PCI) for CAD. In addition, AF is a common precipitant for type 2 MI. Observational studies show that patients with both ACS and AF are less likely to receive appropriate antithrombotic therapy and more likely to experience adverse outcomes. Peri-procedural management of patients with ACS or chronic coronary syndromes (CCS) are detailed in the 2023 ESC Guidelines for the management of acute coronary syndromes and 2024 ESC Guidelines for the management of chronic coronary syndromes.

The combination of AF with ACS is the area where use of multiple antithrombotic drugs is most frequently indicated, consisting of antiplatelet agents plus OAC ( Figure 14) (see Supplementary data online, Additional Evidence Table S27). There is a general trend to decrease the duration of DAPT to reduce bleeding; however, this may increase ischaemic events and stent thrombosis. In ACS there is a high risk of predominantly platelet-driven atherothrombosis and thus of coronary ischaemic events. Acute coronary syndromes treated by PCI require DAPT for improved short- and long-term prognosis. Therefore, a periprocedural triple antithrombotic regimen including an OAC, aspirin, and a P2Y12 inhibitor should be the default strategy for most patients. Major thrombotic events vs. major bleeding risk need to be balanced when prescribing antiplatelet therapy and OAC after the acute phase and/or after PCI. The combination of OAC (preferably a DOAC) and a P2Y12 inhibitor results in less major bleeding than triple therapy that includes aspirin. Clopidogrel is the preferred P2Y12 inhibitor, as the evidence for ticagrelor and prasugrel is less clear with higher bleeding risk. Ongoing trials will add to our knowledge about safely combining DOACs with antiplatelet agents (NCT04981041, NCT04436978). When using VKAs with antiplatelet agents, there is consensus opinion to use an INR range of 2.0–2.5 to mitigate excess bleeding risk.

Short–term triple therapy (≤1 week) is recommended for all patients without diabetes after ACS or PCI. In pooled analyses of RCTs, omitting aspirin in patients with ACS undergoing PCI has the potential for higher rates of ischaemic/stent thrombosis, without impact on incident stroke. None of the trials were powered for ischaemic events. All patients in AUGUSTUS (an open– label, 2 × 2 factorial, randomized controlled clinical trial to evaluate the safety of apixaban vs. vitamin k antagonist and aspirin vs. aspirin placebo in patients with AF and ACS or PCI) received aspirin plus a P2Y12 inhibitor for a median time of 6 days. At the end of the trial, apixaban and a P2Y12 inhibitor without aspirin was the optimal treatment regimen for most patients with AF and ACS and/or PCI, irrespective of the patient’s baseline bleeding and stroke risk.

ESC Guidelines 3365

Prolonged triple therapy up to 1 month after ACS/PCI should be considered in patients at high ischaemic risk, e.g. STEMI, prior stent thrombosis, complex coronary procedures, and prolonged cardiac instability, even though these patients were not adequately represented in the RCTs so far available. In AF

patients with ACS or CCS and diabetes mellitus undergoing coronary stent implantation, prolonging triple therapy with lowdose aspirin, clopidogrel, and an OAC up to 3 months may be of benefit if thrombotic risk outweighs bleeding risk in the individual patient.

----- Start of picture text ----- DOACs rather than VKA are recommended in eligible patients when combining with antiplatelet therapy (Class I) Use the appropriate DOAC dose [a]. A reduced dose is not recommended unless the patient meets DOAC-specific criteria [a] (Class III) When using VKA in combination with antiplatelet therapy, keep INR 2.0–2.5 and TTR >70% VKA: INR 2.0–3.0 (Class IIa) (Class I) Clopidogrel is the preferred P2Y12i when combining with any OAC ACS, PCI or CCS Up to 1 week 1 month 6 months 12 months ACS OAC + P2Y12i undergoing + aspirin OAC + P2Y12i (Class I) OAC only (Class I) PCI (Class I) ACS high OAC + P2Y12i ischaemic + aspirin OAC + P2Y12i (Class I) OAC only (Class I) risk [b] (Class IIa) ACS medically OAC + P2Y12i OAC only managed CCS OAC + P2Y12i uncomplicated + aspirin OAC + P2Y12i (Class I) OAC only (Class I) PCI (Class I) CCS high OAC + P2Y12i ischaemic + aspirin OAC + P2Y12i (Class I) OAC only (Class I) risk [b] (Class IIa) Stable CCS OAC only ----- End of picture text -----

Figure 14 Antithrombotic therapy in patients with AF and acute or chronic coronary syndromes. ACS, acute coronary syndromes; CCS, chronic coronary syndrome; DOAC, direct oral anticoagulant; INR, international normalized ratio of prothrombin time; OAC, oral anticoagulant; P2Y12i, P2Y12-receptor inhibitor antiplatelet agents (clopidogrel, prasugrel, ticagrelor); PCI, percutaneous intervention; TTR, time in therapeutic range; VKA, vitamin K antagonist. The flowchart applies to those patients with an indication for oral anticoagulant therapy.[a] The full standard dose of DOACs should be used unless the patient fulfils dose-reduction criteria ( Table 11). When rivaroxaban or dabigatran are used as the DOAC and concerns about bleeding risk prevail over stent thrombosis or ischaemic stroke, the reduced dose should be considered (15 mg and 110 mg respectively; Class IIa).[b] In patients with diabetes mellitus undergoing coronary stent implantation, prolonging triple antithrombotic therapy for up to 3 months may be of value if thrombotic risk outweighs the bleeding risk.

ESC Guidelines

The evidence for ACS treated without revascularization is limited. Six to 12 months of a single antiplatelet agent in addition to a long-term DOAC is usually sufficient and can minimize bleeding risk. Although there are no head-to-head comparisons between aspirin and clopidogrel, studies have typically used clopidogrel. In patients with stable CCS for more than 12 months, sole therapy with a DOAC is sufficient and no additional antiplatelet therapy is required. In patients at potential risk of gastrointestinal bleeding, use of proton pump inhibitors is reasonable during combined antithrombotic therapy, although evidence in AF patients is limited. Multimorbid patients with ACS or CCS need careful assessment of ischaemic risk and management of modifiable bleeding risk factors, with a comprehensive work-up to individually adapt antithrombotic therapy.

Recommendation Table 24 — Recommendations for patients with acute coronary syndromes or undergoing percutaneous intervention (see also Evidence Table 24)

RecommendationsClassaLevelb
General recommendations for patients with AF and an indication for concomitant antiplatelet therapy
For combinations with antiplatelet therapy, a DOAC is recommended in eligible patients in preference to a VKA to mitigate bleeding risk and prevent thromboembolism.764,766IA
Rivaroxaban 15 mg once daily should be considered in preference to rivaroxaban 20 mg once daily when combined with antiplatelet therapy in patients where concerns about bleeding risk prevail over concerns about stent thrombosis or ischaemic stroke.765IIaB
Dabigatran 110 mg twice daily should be considered in preference to dabigatran 150 mg twice daily when combined with antiplatelet therapy in patients where concerns about bleeding risk prevail over concerns about stent thrombosis or ischaemic stroke.766IIaB
Carefully regulated VKA dosing with a target INR of 2.0–2.5 and TTR>70% should be considered when combined with antiplatelet therapy in AF patients to mitigate bleeding risk.IIaC
Recommendations for AF patients with ACS
Early cessation (≤1 week) of aspirin and continuation of an oral anticoagulant (preferably DOAC) with a P2Y12inhibitor (preferably clopidogrel) for up to 12 months is recommended in AF patients with ACS undergoing an uncomplicated PCI to avoid major bleeding, if the risk of thrombosis is low or bleeding risk is high.764–767IA
Triple therapy with aspirin, clopidogrel, and oral anticoagulation for longer than 1 week after an ACS should be considered in patients with AF when ischaemic risk outweighs the bleeding risk, with the total duration (≤1 month) decided according to assessment of these risks and clear documentation of the discharge treatmentplan.776IIaC
Recommendations for AF patients undergoing PCIRecommendations for AF patients undergoing PCIRecommendations for AF patients undergoing PCI
After uncomplicated PCI, early cessation (≤1 week) of aspirin and continuation of an oral anticoagulant and a P2Y12inhibitor (preferably clopidogrel) for up to 6 months is recommended to avoid major bleeding, if ischaemic risk is low.763–766,776,780IA
Triple therapy with aspirin, clopidogrel, and an oral anticoagulant for longer than 1 week should be considered after PCI when the risk of stent thrombosis outweighs the bleeding risk, with the total duration (≤1 month) decided according to assessment of these risks and clear documentation.776IIaB

ACS, acute coronary syndromes; AF, atrial fibrillation; DOAC, direct oral anticoagulant; INR, international normalized ratio of prothrombin time; PCI, percutaneous intervention; TTR, time in therapeutic range; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

9.3. AF-CARE in vascular disease

Peripheral arterial disease (PAD) is common in patients with AF, ranging from 6.7% to 14% of patients. Manifest PAD is associated with incident AF. PAD predicts a higher mortality in patients with AF and is an independent predictor of stroke in those not on OAC. Patients with lower extremity artery disease and AF also have a higher overall mortality and risk of major cardiac events. A public health database of >40 000 patients hospitalized for PAD or critical limb ischaemia showed AF to be an independent predictor for mortality (HR, 1.46; 95% CI, 1.39–1.52) and ischaemic stroke (HR, 1.63; 95% CI, 1.44–1.85) as compared with propensity-matched controls. Similarly, in patients undergoing carotid endarterectomy or stenting, the presence of AF is associated with higher mortality (OR, 1.59; 95% CI, 1.11–2.26).

Anticoagulation alone is usually sufficient in the chronic disease phase, with DOACs being the preferred agents despite one RCT subanalysis showing a higher risk of bleeding as compared with warfarin. In the case of recent endovascular revascularization, a period of combination with single antiplatelet therapy should be considered, weighing bleeding and thrombotic risks and keeping the period of combination antithrombotic therapy as brief as possible (ranging between 1 month for peripheral and 90 days for neuro-interventional procedures).

9.4. AF-CARE in acute stroke or intracranial haemorrhage

9.4.1. Management of acute ischaemic stroke

Management of acute stroke in patients with AF is beyond the scope of these guidelines. In AF patients presenting with acute ischaemic stroke while taking OAC, acute therapy depends on the treatment regimen and intensity of OAC. Management should be co-ordinated by a specialist neurologist team according to relevant guidelines.

Continued

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9.4.2. Introduction or re-introduction of

anticoagulation after ischaemic stroke

The optimal time for administering OAC in patients with acute cardioembolic stroke and AF remains unclear. Randomized control trials have been unable to provide any evidence to support the administration of anticoagulants or heparin in patients with acute ischaemic stroke within 48 h from stroke onset. This suggests that low-dose aspirin should be administered to all patients during this timeframe.

Two trials have examined the use of DOAC therapy early after stroke, with no difference in clinical outcomes compared with delayed DOAC prescription. The ELAN (Early versus Late initiation of direct oral Anticoagulants in post-ischaemic stroke patients with atrial fibrillatioN) trial randomized 2013 patients with acute ischaemic stroke and AF to open-label early use of DOACs (<48 h after minor/moderate stroke; day 6–7 after major stroke) vs. later DOAC prescription (day 3–4 after minor stroke; day 6–7 after moderate stroke; day 12–14 after major stroke). There was no significant difference in the composite thromboembolic, bleeding, and vascular death outcome at 30 days (risk difference early vs. late, −1.18%; 95% CI, −2.84 to 0.47). The TIMING (Timing of Oral Anticoagulant Therapy in Acute Ischemic Stroke With Atrial Fibrillation) trial, a registry-based, non-inferiority, open-label, blinded endpoint trial randomized 888 patients within 72 h of ischaemic stroke onset to early (≤4 days) or delayed (5–10 days) DOAC initiation. Early DOAC use was non-inferior to the delayed strategy for the composite of thromboembolism, bleeding and all-cause mortality at 90 days (risk difference, −1.79%; 95% CI, −5.31% to 1.74%). Two ongoing trials will provide further guidance on the most appropriate timing of DOAC therapy after ischaemic stroke (NCT03759938, NCT03021928).

9.4.3. Introduction or re-introduction of anticoagulation after haemorrhagic stroke

There is insufficient evidence currently to recommend whether OAC should be started or re-started after ICH to protect against the high risk of ischaemic stroke in these patients (see Supplementary data online, Additional Evidence Table S28). Data from two pilot trials are available. The APACHE-AF (Apixaban After Anticoagulation-associated Intracerebral Haemorrhage in Patients With Atrial Fibrillation) trial was a prospective, randomized, open-label trial with masked endpoint assessment; 101 patients who survived 7–90 days after anticoagulationassociated ICH were randomized to apixaban or no OAC. During a median of 1.9 years follow-up (222 person-years), there was no difference in non-fatal stroke or vascular death, with an annual event rate of 12.6% with apixaban and 11.9% with no OAC (adjusted HR, 1.05; 95% CI, 0.48–2.31; P =.90). SoSTART (Start or STop Anticoagulants Randomised Trial) was an open-label RCT in 203 patients with AF after symptomatic spontaneous ICH. Starting OAC was not non-inferior to avoiding long-term (≥1 year) OAC, with ICH recurrence in 8/101 (8%) vs. 4/102 (4%) patients (adjusted HR, 2.42; 95% CI, 0.72–8.09). Mortality occurred in 22/101 (22%) patients in the OAC group vs. 11/102 (11%) patients where OAC were avoided.

Until additional trials report on the clinical challenge of post-ICH anticoagulation (NCT03950076, NCT03996772), an individualized multidisciplinary approach is advised led by an expert neurology team.

9.5. AF-CARE for trigger-induced AF

Trigger-induced AF is defined as new AF in the immediate association of a precipitating and potentially reversible factor. Also known as ‘secondary’ AF, this task force prefer the term trigger-induced as there are almost

always underlying factors in individual patients that can benefit from full consideration of the AF-CARE pathway. The most common precipitant unmasking a tendency to AF is acute sepsis, where AF prevalence is between 9% and 20% and has been associated with a worse prognosis. The degree of inflammation correlates with the incidence of AF, which may partly explain the wide variability across studies in prevalence, as well as recurrence of AF. Longer-term data suggest that AF triggered by sepsis recurs after discharge in between a third to a half of patients. In addition to other acute triggers which may be causal (such as alcohol and illicit drug use), numerous conditions are also associated with chronic inflammation leading to subacute stimuli for AF ( Table 14). The specific trigger of an operative procedure is discussed in Section 9.6.

After meeting the diagnostic criteria for AF (see Section 3.2), the management of trigger-induced AF is recommended to follow the AF-CARE principles, with critical consideration of underlying risk factors and comorbidities. Based on retrospective and observational data, patients with AF and trigger-induced AF seem to carry the same thromboembolic risk as patients with primary AF. In the acute phase of sepsis, patients show an unclear risk–benefit profile with anticoagulation therapy. Prospective studies on anticoagulation in patients with triggered AF episodes are lacking. Acknowledging that there are no RCTs specifically available in this population to assess trigger-induced AF, long-term OAC therapy should be considered in suitable patients with triggerinduced AF who are at elevated risk of thromboembolism, starting OAC after the acute trigger has been corrected and considering the anticipated net clinical benefit and informed patient preferences. As with any decision on OAC, not all patients will be suitable for OAC, depending on relative and absolute contraindications and the risk of major bleeding. The approach to rate and rhythm control will depend on subsequent recurrence of AF or any associated symptoms, and re-evaluation should be individualized to take account of the often high AF recurrence rate.

Table 14 Non-cardiac conditions associated with trigger-induced AF

Acute conditions Infections (bacterial and viral) Pericarditis, myocarditis Emergency conditions (burn injury, severe trauma, shock) Binge alcohol consumption Drug use, including methamphetamines, cocaine, opiates, and cannabis Acute interventions, procedures, and surgery Endocrine disorders (thyroid, adrenal, pituitary, others) Chronic conditions with infammation and enhanced AF substrate Immune-mediated diseases (rheumatoid arthritis, systemic lupus erythematosus, infammatory bowel disease, coeliac disease, psoriasis, others)
Obesity
Chronic obstructive airways disease
Obstructive sleep apnoea
Cancer
Fatty liver disease Stress Endocrine disorders (see_Section9.10_)© ESC 2024

ESC Guidelines

Recommendation Table 25 — Recommendations for trigger-induced AF (see also Evidence Table 25)

RecommendationClassaLevelb© ESC 2024
Long-term oral anticoagulation should be considered in suitable patients with trigger-induced AF at elevated thromboembolic risk to prevent ischaemic stroke and systemic thromboembolism.13,800,806,807,815IIaC

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

9.6. AF-CARE in post-operative patients

Peri-operative AF describes the onset of the arrhythmia during an ongoing intervention. Post-operative AF (POAF), defined as newonset AF in the immediate post-operative period, is a common complication with clinical impact that occurs in 30%–50% of patients undergoing cardiac surgery, and in 5%–30% of patients undergoing non-cardiac surgery. Intra- and post-operative changes and specific AF triggers (including peri-operative complications) and pre-existing AF-related risk factors and comorbidities increase the susceptibility to POAF. Although POAF episodes may be selfterminating, POAF is associated with 4–5 times increase in recurrent AF during the next 5 years, and is a risk factor for stroke, MI, heart failure, and death. Other adverse events associated with POAF include haemodynamic instability, prolonged hospital stay, infections, renal complications, bleeding, increased in-hospital death, and greater healthcare cost.

While multiple strategies to prevent POAF with pre-treatment or acute drug treatment have been described, there is a lack of evidence from large RCTs. Pre-operative use of propranolol or carvedilol plus N -acetyl cysteine in cardiac and non-cardiac surgery is associated with a reduced incidence of POAF, but not major adverse events. An umbrella review of 89 RCTs from 23 meta-analyses (19 211 patients, but not necessarily in AF) showed no benefit from beta-blockers in cardiac surgery for mortality, MI, or stroke. In non-cardiac surgery, beta-blockers were associated with reduced rates of MI after surgery (RR range, 0.08–0.92), but higher mortality (RR range, 1.03–1.31), and increased risk of stroke (RR range, 1.33–7.72). Prevention of peri-operative AF can also be achieved with amiodarone. In a meta-analyses, amiodarone (oral or intravenous [i.v.]) and beta-blockers were equally effective in reducing post-operative AF, but their combination was better than beta-blockers alone. Lower cumulative doses of amiodarone (<3000 mg during the loading phase) could be effective, with fewer adverse events. Withdrawal of beta-blockers should be avoided due to increased risk of POAF. Other treatment strategies (steroids, magnesium, sotalol, (bi)atrial pacing, and botulium injection into the epicardial fat pad) lack scientific evidence for the prevention of peri-operative AF. Peri-operative posterior pericardiotomy, due to the reduction of postoperative pericardial effusion, showed a significant decrease in POAF in patients undergoing cardiac surgery (OR, 0.44; 95% CI, 0.27–0.70; P =.0005). In 3209 patients undergoing non-cardiac thoracic surgery, colchicine did not lead to any significant reduction in AF compared with placebo (HR, 0.85; 95% CI, 0.65–1.10; P =.22).

The evidence for prevention of ischaemic stroke in POAF by OAC is limited. Oral anticoagulant therapy is associated with a high

bleeding risk soon after cardiac surgery or major non-cardiac interventions. Conversely, meta-analyses of observational cohort studies suggest a possible protective impact of OAC in POAF for all-cause mortality and a lower risk of thromboembolic events following cardiac surgery, accompanied by higher rates of bleeding. This task force recommends to treat post-operative AF according to the AF-CARE pathway as discussed for trigger-induced AF (with the [R] pathway the same as for first-diagnosed AF). Ongoing RCTs in cardiac surgery (NCT04045665) and non-cardiac surgery (NCT03968393) will inform optimal long-term OAC use among patients with POAF. While awaiting the results of these trials, this task force recommends that after acute bleeding risk has settled, long-term OAC should be considered in patients with POAF according to their thromboembolic risk factors.

Recommendation Table 26 — Recommendations for management of post-operative AF (see also Evidence Table 26)

RecommendationsClassaLevelb© ESC 2024
Peri-operative amiodarone therapy is recommended where drug therapy is desired to prevent post-operative AF after cardiac surgery.838,839,850,851IA
Concomitant posterior peri-cardiotomy should be considered in patients undergoing cardiac surgery to prevent post-operative AF.845,846IIaB
Long-term oral anticoagulation should be considered in patients with post-operative AF after cardiac and non-cardiac surgery at elevated thromboembolic risk, to prevent ischaemic stroke and thromboembolism.811,852–854IIaB
Routine use of beta-blockers is not recommended in patients undergoing non-cardiac surgery for the prevention of post-operative AF.836,855IIIB

AF, atrial fibrillation. aClass of recommendation. bLevel of evidence.

9.7. AF-CARE in embolic stroke of unknown source

The term ‘embolic stroke of undetermined source’ (ESUS) was introduced to identify non-lacunar strokes whose mechanism is likely to be embolic, but the source remains unidentified. Of note, these patients have a recurrent risk of stroke of 4%–5% per year. The main embolic sources associated with ESUS are concealed AF, atrial cardiomyopathy, left ventricular disease, atherosclerotic plaques, patent foramen ovale (PFO), valvular diseases, and cancer. Atrial cardiomyopathy and left ventricular disease are the most prevalent causes. AF is reported to be the underlying mechanism in 30% of ESUS patients. The detection of AF among ESUS patients increases the longer cardiac monitoring is provided (see Supplementary data online, Additional Evidence Table S29). This also holds for the duration of implantable cardiac monitoring, with probability of AF detection ranging from 2% with 1 week to over 20% by 3 years. In patients with ESUS, factors associated with an increased detection of AF are increasing age, left atrial enlargement, cortical location of stroke, large or small vessel disease, an increased number of

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atrial premature beats per 24 h, rhythm irregularity, and risk stratification scores (such as CHA2DS2-VASc, Brown ESUS-AF, HAVOC, and C2HEST). This task force recommends prolonged monitoring depending on the presence of the above-mentioned risk markers.

Currently available evidence, including two completed RCTs and one stopped for futility, do not support the use of DOACs compared with aspirin in patients with acute ESUS without documented AF. Ongoing trials will provide further guidance (NCT05134454, NCT05293080, NCT04371055).

Recommendation Table 27 — Recommendations for patients with embolic stroke of unknown source (see also Evidence Table 27)

RecommendationsClassaLevelb© ESC 2024
Prolonged monitoring for AF is recommended in patients with ESUS to inform on AF treatment decisions.861–863IB
Initiation of oral anticoagulation in ESUS patients without documented AF is not recommended due to lack of effcacy in preventing ischaemic stroke and thromboembolism.875,876IIIA

AF, atrial fibrillation; ESUS, embolic stroke of undetermined source. aClass of recommendation. bLevel of evidence.

9.8. AF-CARE during pregnancy

Atrial fibrillation is one of the most common arrhythmias during pregnancy, with prevalence increasing due to higher maternal age and changes in lifestyle, and because more women with congenital heart disease survive to childbearing age. Rapid atrioventricular conduction of AF may have serious haemodynamic consequences for mother and foetus. AF during pregnancy is associated with an increased risk of death. A multidisciplinary approach is essential to prevent maternal and foetal complications, bringing together gynaecologists, neonatologists, anaesthesiologists, and cardiologists experienced in maternal medicine.

Pregnancy is associated with a hypercoagulable state and increased thromboembolic risk. The same rules for risk assessment of thromboembolism should be used as in non-pregnant women, as detailed in the 2018 ESC Guidelines for the management of cardiovascular diseases during pregnancy. The preferred agents for anticoagulation of AF during pregnancy are unfractionated or low molecular weight heparins (LMWHs), which do not cross the placenta. Vitamin K antagonists should be avoided in the first trimester (risk of miscarriage, teratogenicity) and from week 36 onwards (risk of foetal intracranial bleeding if early unexpected delivery). Direct oral anticoagulants are not recommended during pregnancy due to concerns about safety. However, an accidental exposure during pregnancy should not lead to a recommendation for termination of the pregnancy. Vaginal delivery should be advised for most women, but is contraindicated during VKA treatment because of the risk of foetal intracranial bleeding.

Intravenous selective beta-1 receptor blockers are recommended as first choice for acute heart rate control of AF. This does not include atenolol, which can lead to intrauterine growth retardation. If betablockers fail, digoxin and verapamil can be considered for rate control

(verapamil should be avoided in the first trimester). Rhythm control is the preferred strategy during pregnancy. Electrical cardioversion is recommended if there is haemodynamic instability, considerable risk to mother or foetus, or with concomitant HCM. Electrical cardioversion can be performed safely without compromising foetal blood flow, and the consequent risk for foetal arrhythmias or pre-term labour is low. The foetal heart rate should be closely monitored throughout and after cardioversion, which should generally be preceded by anticoagulation. In haemodynamically stable women without structural heart disease, intravenous ibutilide or flecainide may be considered for termination of AF, but experience is limited. Catheter ablation is normally avoided during pregnancy, but is technically feasible without radiation in refractory symptomatic cases with a minimal/zero fluoroscopy approach.

Counselling is important in women of childbearing potential prior to pregnancy, highlighting the potential risks of anticoagulation and rate or rhythm control drugs (including teratogenic risk, where relevant). Contraception and timely switch to safe drugs should be proactively discussed.

Recommendation Table 28 — Recommendations for patients with AF during pregnancy (see also Evidence Table 28)

RecommendationsClassaLevelb© ESC 2024
Immediate electrical cardioversion is recommended in patients with AF during pregnancy and haemodynamic instability or pre-excited AF to improve maternal and foetal outcomes.885,891–893IC
Therapeutic anticoagulation with LMWHs or VKAs (except VKAs for the frst trimester or beyond Week 36) is recommended for pregnant patients with AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.885IC
Beta-1 selective blockers are recommended for heart rate control of AF in pregnancy to reduce symptoms and improve maternal and foetal outcomes, excluding atenolol.888IC
Electrical cardioversion should be considered for persistent AF in pregnant women with HCM to improve maternal and foetal outcomes.885,894IIaC
Digoxin should be considered for heart rate control of AF in pregnancy, if beta-blockers are ineffective or not tolerated, to reduce symptoms and improve maternal and foetal outcomes.885IIaC
Intravenous ibutilide or fecainide may be considered for termination of AF in stable pregnant patients with a structurally normal heart to improve maternal and foetal outcomes.895,896IIbC
Flecainide or propafenone may be considered for longer-term rhythm control in pregnancy, if rate controlling drugs are ineffective or not tolerated, to reduce symptoms and improve maternal and foetal outcomes.885IIbC

AF, atrial fibrillation; HCM, hypertrophic cardiomyopathy; LMWH, low molecular weight heparin; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

ESC Guidelines

9.9. AF-CARE in congenital heart disease

Survival of patients with congenital heart disease has increased over time, but robust data on the management of AF are missing and available evidence is derived mainly from observational studies. Oral anticoagulants are recommended for all patients with AF and intracardiac repair, cyanotic congenital heart disease, Fontan palliation, or systemic right ventricle irrespective of the individuals’ thromboembolic risk factors. Patients with AF and other congenital heart diseases should follow the general risk stratification for OAC use in AF (i.e. depending on the thromboembolic risk or CHA2DS2-VA score). Direct oral anticoagulants are contraindicated in patients with mechanical heart valves, but appear safe in patients with congenital heart disease, or those with a valvular bioprosthesis.

Rate control drugs such as selective beta-1 receptor blockers, verapamil, diltiazem, and digoxin can be used with caution, with monitoring for bradycardia and hypotension. Rhythm control strategies such as amiodarone may be effective, but warrant monitoring for bradycardia. When cardioversion is planned, both 3 weeks of OAC and TOE should be considered because thrombi are common in patients with congenital heart disease and atrial arrhythmias. Ablation approaches can be successful in patients with congenital heart disease, but AF recurrence rates may be high (see Supplementary data online, Additional Evidence Table S30).

In patients with atrial septal defect, closure may be performed before the fourth decade of life to decrease the risk of AF or AFL. Patients with stroke who underwent closure of their PFO may have an increased risk of AF, but in patients with PFO and AF, PFO closure is not recommended for stroke prevention. AF surgery or catheter ablation can be considered at the time of closure of the atrial septal defect within a multidisciplinary team. AF catheter ablation of late atrial arrhythmias is likely to be effective after surgical atrial septal closure.

Recommendation Table 29 — Recommendations for patients with AF and congenital heart disease (see also Evidence Table 29)

RecommendationClassaLevelb© ESC 2024
Oral anticoagulation should be considered in all adult congenital heart disease patients with AF/AFL and intracardiac repair, cyanosis, Fontan palliation, or systemic right ventricle to prevent ischaemic stroke and thromboembolism, regardless of other thromboembolic risk factors.897IIaC

AF, atrial fibrillation; AFL, atrial flutter. aClass of recommendation. bLevel of evidence.

9.10. AF-CARE in endocrine disorders

Endocrine dysfunction is closely related to AF, both as the direct action of endocrine hormones and as a consequence of treatments for endocrine disease. Optimal management of endocrine disorders is therefore part of the AF-CARE pathway.

Clinical and subclinical hyperthyroidism, as well as subclinical hypothyroidism, are associated with an increased risk of AF. Patients presenting with new-onset or recurrent AF should be tested for thyroid-stimulating hormone (TSH) levels. The risk of AF is enhanced

in vulnerable patients, including the elderly and those with structural atrial diseases, as well as cancer patients on immune checkpoint inhibitors. In hyperthyroidism, and even in the euthyroid range, the risk of AF increases according to the reduction in TSH and elevated levels of thyroxine. Moreover, the risk of stroke is higher in patients with hyperthyroidism, which can be mitigated by treating the thyroid disorder. Amiodarone induces thyroid dysfunction in 15%–20% of treated patients, leading to both hypo- and hyperthyroidism, which warrants referral to an endocrinologist (see Supplementary data online for further details).

Hypercalcaemia may also induce arrhythmias, but the role of primary hyperparathyroidism in incident AF is poorly studied. Surgical parathyroidectomy has been found to reduce both supraventricular and ventricular premature beats. Primary aldosteronism is related to an increased risk of AF through direct actions and vascular effects, with a three-fold higher rate of incident AF compared with patients with essential hypertension. Increases in genetically predicted plasma cortisol are associated with greater risk of AF, and patients with adrenal incidentalomas with subclinical cortisol secretion have a higher prevalence of AF. Acromegaly may predispose to an increased substrate for AF, with incident AF rates significantly higher than controls in long-term follow-up, even after adjusting for AF risk factors.

The association between type 2 diabetes and AF is discussed in Sections 5.3 (AF recurrence) and Section 10.5 (incident AF). In addition to insulin-resistance mechanisms typical of type 2 diabetes, the loss of insulin signalling has recently been associated with electrical changes that can lead to AF. Type 1 diabetes is associated with an increased risk of several cardiovascular diseases including AF.

9.11. AF-CARE in inherited cardiomyopathies and primary arrhythmia syndromes

A higher incidence and prevalence of AF have been described in patients with inherited cardiomyopathies and primary arrhythmia syndromes. AF can be the presenting or only clinically overt feature. AF in these patients is associated with adverse clinical outcomes, and has important implications on management (see Supplementary data online, Additional Evidence Table S31). When AF presents at a young age, there should be a careful interrogation about family history and a search for underlying disease.

Rhythm control approaches may be challenging in patients with inherited cardiomyopathies and primary arrhythmia syndromes. For example, many drugs have a higher risk of adverse events or may be contraindicated (e.g. amiodarone and sotalol in congenital long QT syndrome, and Class IC AADs in Brugada syndrome) (see Supplementary Data online, Table S6). Owing to long-term adverse effects, chronic use of amiodarone is problematic in these typically young individuals. In patients with an implantable cardioverter defibrillator, AF is a common cause of inappropriate shocks. Programming a single high-rate ventricular fibrillation zone ≥210–220 b.p.m. with long detection time is safe, and is suggested in patients without documented slow monomorphic ventricular tachycardia. Implantation of an atrial lead may be considered in the case of significant bradycardia with beta-blocker treatment.

Patients with Wolff–Parkinson–White syndrome and AF are at risk of fast ventricular rates from rapid conduction of atrial electrical activity to the ventricles via the accessory pathway, potentially leading to ventricular fibrillation and sudden death. Immediate electrical cardioversion is needed for haemodynamically compromised patients with

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pre-excited AF, and atrioventricular node-modulating drugs should be avoided. Pharmacological cardioversion can be attempted using ibutilide or flecainide, while propafenone should be used with caution due to effects on the atrioventricular node. Amiodarone should be avoided in pre-excited AF due to its delayed action. Further details on inherited cardiomyopathies can be found in the 2023 ESC Guidelines for the management of cardiomyopathies.

multimorbid AF patients has improved since the introduction of DOACs, but is still lower in AF patients at older age (OR, 0.98 per year; 95% CI, 0.98–0.98), with dementia (OR, 0.57; 95% CI, 0.55–0.58), or frailty (OR, 0.74; 95% CI, 0.72–0.76). The value of observational data which show potential benefit from OAC (in particular, DOACs) is limited due to prescription biases. Frail patients aged ≥75 years with polypharmacy and stable on a VKA may remain on the VKA rather than switching to a DOAC ( Section 6.2).

9.12. AF-CARE in cancer

All types of cancer show an increased risk of AF, with prevalence varying from 2% to 28%. The occurrence of AF may often be related to a pre-existing atrial substrate with vulnerability to AF. AF may be an indicator of an occult cancer, but also can appear in the context of concomitant surgery, chemotherapy, or radiotherapy. Risk of AF is dependent on, among other factors, the cancer type and stage, and is greater in older patients with pre-existing cardiovascular disease. Some procedures are associated with higher incidence of AF, including lung surgery (from 6% to 32%) and non-thoracic surgery such as a colectomy (4%–5%).

Atrial fibrillation in the context of cancer is associated with a twofold higher risk of systemic thromboembolism and stroke, and six-fold increased risk of heart failure. On the other hand, the coexistence of cancer increases the risk of all-cause mortality and major bleeding in patients with AF. Bleeding in those receiving OAC can also unmask the presence of cancer.

Stroke risk scores may underestimate thromboembolic risk in cancer patients. The association between cancer, AF, and ischaemic stroke also differs between cancer types. In some types of cancer, the risk of bleeding seems to exceed the risk of thromboembolism. Risk stratification is therefore complex in this population, and should be performed on an individual basis considering cancer type, stage, prognosis, bleeding risk, and other risk factors. These aspects can change within a short period of time, requiring dynamic assessment and management.

As with non-cancer patients, DOACs in those with cancer have similar efficacy and better safety compared with VKAs. Low molecular weight heparin is a short-term anticoagulation option, mostly during some cancer treatments, recent active bleeding, or thrombocytopaenia. Decision-making on AF management, including on rhythm control, is best performed within a cardio-oncology multidisciplinary team. Attention is required on interactions with cancer treatments, in particular QT-interval prolongation with AADs.

9.14. AF-CARE in atrial flutter

Due to the association between AFL and thromboembolic outcomes, and the frequent development of AF in patients with AFL, the management of comorbidities and risk factors in AFL should mirror that for AF (see Section 5). Similarly, the approach to prevent thromboembolism in AFL includes peri-procedural and long-term OAC (see Section 6). Rate control can be difficult to achieve in AFL, despite combination therapy. Rhythm control is often the first-line approach, with small randomized trials showing that cavo-tricuspid isthmus (CTI) ablation is superior to AADs. Recurrence of AFL is uncommon after achieving and confirming bidirectional block in typical CTI-dependent AFL. However, the majority of patients (50%–70%) have manifested AF during long-term follow-up in observational studies after AFL ablation. Hence the necessity for long-term dynamic reevaluation in all patients with AFL in keeping with the AF-CARE approach. More detail on the management of AFL and other atrial arrhythmias is described in the 2019 ESC Guidelines for the management of patients with supraventricular tachycardia.

Recommendation Table 30 — Recommendations for prevention of thromboembolism in atrial flutter (see also Evidence Table 30)

RecommendationClassaLevelb© ESC 2024
Oral anticoagulation is recommended in patients with atrial futter at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.86,1032IB

AF, atrial fibrillation; AFL, atrial flutter. aClass of recommendation. bLevel of evidence.

9.13. AF-CARE in older, multimorbid, or frail patients

Atrial fibrillation increases with age, and older patients more frequently have multimorbidity and frailty which are associated with worse clinical outcomes. Multimorbidity is the coexistence of two or more medically diagnosed diseases in the same individual. Frailty is defined as a person more vulnerable and less able to respond to a stressor or acute event, increasing the risk of adverse outcomes. The prevalence of frailty in AF varies due to different methods of assessment from 4.4% to 75.4%, and AF prevalence in the frail population ranges from 48.2% to 75.4%. Frailty status is a strong independent risk factor for new-onset AF among older adults with hypertension.

Atrial fibrillation in frail patients is associated with less use of OAC and lower rates of management with a rhythm control strategy. Oral anticoagulation initiation in older, frail

10. Screening and prevention of AF

10.1. Epidemiology of AF

Atrial fibrillation is the most common sustained arrhythmia worldwide, with an estimated global prevalence in 2019 of 59.7 million persons with AF. Incident cases of AF are doubling every few decades. Future increases are anticipated, in particular in middle-income countries. In community-based individuals, the prevalence of AF in a United States of America cohort was up to 5.9%. The age-standardized prevalence and incidence rates have remained constant over time. The increase in overall prevalence is largely attributable to population growth, ageing, and survival from other cardiac conditions. In parallel, increases in risk factor burden, better awareness, and improved detection of AF have been observed. The lifetime risk

ESC Guidelines

of AF has been estimated to be as high as 1 in 3 for older individuals, with age-standardized incidence rates higher for men than women. Populations of European ancestry are typically found to have higher AF prevalence, individuals of African ancestry have worse outcomes, and other groups may have less access to interventions. Socioeconomic and other factors likely play a role in racial and ethnic differences in AF, but studies are also limited due to differences in how groups access healthcare. Greater deprivation in socioeconomic and living status is associated with higher AF incidence.

10.2. Screening tools for AF

In recent years, an abundance of novel devices that can monitor heart rhythm have come to the market, including fitness bands and smartwatches. Although the evidence for clinical effectiveness of digital devices is limited, they may be useful in detecting AF, and their clinical, economic, legal, and policy implications merit further investigation. Devices for AF detection can broadly be divided into those that provide an ECG, and those with non-ECG approaches such as photoplethysmography ( Figure 15 and Table 15).

----- Start of picture text ----- ECG-based methods Diagnostic for AF if diagnosis is confirmed by a physician (Class I) No of leads 1 or 2 6 >6 Tracing Non ECG-based methods Not diagnostic (may be indicative for AF) Pulse Mechano- Smart Oscillometry PPG palpation cardiography speaker Method Contact Contactless Contactless Tracing ----- End of picture text -----

Figure 15 Non-invasive diagnostic methods for AF screening. AF, atrial fibrillation; BP, blood pressure; ECG, electrocardiogram; PPG, photoplethysmography.

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Table 15 Tools for AF screening

Tools for AF screening
(i) Pulse palpation1045
(ii) Use of artifcial intelligence algorithms to identify patients at risk1046
(iii) ECG-based devices
(a) Conventional ECG devices
(1) Classic 12-lead ECG1047
(2) Holter monitoring (from 24 h to a week or more)1048
(3) Mobile cardiac telemetry (during hospitalization)1049
(4) Handheld devices1050–1052
(5) Wearable patches (up to 14 days)1053–1067
(6) Biotextiles (up to 30 days)1068–1072
(7) Smart devices (30 s)1073–1091
(b) Implantable loop recorders (3–5 years)1092–1099
(iv) Non-ECG-based devices
(a) Photoplethysmography and automatic algorithms: contact (fngertip, smart device, band) and contactless (video)1100–1106
(b) Oscillometry (blood pressure monitors that derive heart rhythm regularity algorithmically)1107–1110
(c) Mechanocardiography (accelerometers and gyroscopes to sense the mechanical activity of the heart)1111 (d) Contactless video plethysmography (through video monitoring)1112–1115 (e) Smart speakers (through the identifcation of abnormal heart rate patterns)1116© ESC 2024

ECG, electrocardiogram.

Most consumer-based devices use photoplethysmography, and several large studies have been performed typically in low-risk individuals. In an RCT of 5551 participants invited by their health insurer, smartphone-based photoplethysmography increased the odds of OAC-treated new AF by 2.12 (95% CI, 1.19–3.76; P =.01) compared with usual care. RCTs powered for assessment of clinical outcomes are still lacking for consumerbased AF screening. Further head-to-head comparisons between novel digital devices and those commonly used in healthcare settings are needed to establish their comparative effectiveness in the clinical setting and account for different populations and settings. In a systematic review of smartphone-based photoplethysmography compared with a reference ECG, unrealistically high sensitivity and specificity were noted, likely due to small, lowquality studies with a high degree of patient selection bias. Hence, when AF is suggested by a photoplethysmography device or any other screening tool, a single-lead or continuous ECG tracing of >30 s or 12-lead ECG showing AF analysed by a physician with expertise in ECG rhythm interpretation is recommended to establish a definitive diagnosis of AF.

The combination of big data and artificial intelligence (AI) is having an increasing impact on the field of electrophysiology. Algorithms have been created to improve automated AF diagnosis and several algorithms to aid diagnostics are being investigated. However, the clinical performance and broad applicability of these solutions are not yet known. The use of AI may enable future treatment changes to be assessed with dynamic and continuous patient-directed monitoring using wearable devices. There are still challenges in the field that need clarification, such as data acquisition, model performance, external validity, clinical implementation, algorithm interpretation, and confidence, as well as the ethical aspects.

10.3. Screening strategies for AF

Screening can be performed systematically, with an invitation issued to a patient, or opportunistically, at the time of an ad hoc meeting with a healthcare professional. Regardless of the mode of invitation, screening should be part of a structured programme and is not the same as identification of AF during a routine healthcare visit or secondary to arrhythmia symptoms.

Screening can be done at a single timepoint (snapshot of the heart rhythm), e.g. using pulse palpation or a 12-lead ECG. Screening can also be of an extended duration, i.e. prolonged, using either intermittent or continuous monitoring of heart rhythm. Most studies using an opportunistic strategy have screened for AF at a single timepoint with short duration (such as a single timepoint ECG), compared with systematic screening studies that have mainly used prolonged (repeated or continuous) rhythm assessment. The optimal screening method will vary depending on the population being studied ( Figure 16) (see Supplementary data online, Additional Evidence Table S32). More sensitive methods will detect more AF but may lead to an increased risk of false positives and an increased detection of low burden AF, whereas more specific methods result in less false positives, at the risk of missing AF.

Invasive monitoring of heart rhythm in high-risk populations extended for several years has been shown to result in device-detected AF prevalence of around 30%, albeit most of whom have a low burden of AF. Pacemaker studies have shown that patients with a low burden of device-detected subclinical AF have a lower risk of ischaemic stroke. This has been confirmed in RCTs assessing DOAC use in patients with device-detected subclinical AF (see Section 6.1.1). The burden needed for device-detected subclinical AF to translate into stroke risk is not known, and further studies are clearly needed. Benefit and cost-effectiveness of screening are discussed in the Supplementary data online.

ESC Guidelines

Recommendation Table 31 — Recommendations for screening for AF (see also Evidence Table 31)

RecommendationsClassaLevelb© ESC 2024
Review of an ECG (12-lead, single, or multiple leads) by a physician is recommended to provide a defnite diagnosis of AF and commence appropriate management.1091,1121–1123,1125IB
Routine heart rhythm assessment during healthcare contact is recommended in all individuals aged≥65 years for earlier detection of AF.IC
Population-based screening for AF using a prolonged non-invasive ECG-based approach should be considered in individuals aged≥75 years, or≥65 years with additional CHA2DS2-VA risk factors to ensure earlier detection of AF.6,1135–1137IIaB

AF, atrial fibrillation; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; ECG, electrocardiogram. aClass of recommendation. bLevel of evidence.

10.3.1. Single timepoint screening ‘snapshot’

Several cluster RCTs in primary care settings have explored whether screening performed as a snapshot of the heart rhythm at one timepoint can detect more AF compared with usual care in individuals aged ≥65 years. No increased detection of AF was seen in groups randomized to single timepoint screening. These findings were confirmed in a meta-analysis of RCTs showing that screening as a one-time event did not increase detection of AF compared with usual care. Notably, these studies were performed in healthcare settings where the detection of AF in the population might be high, hence the results might not be generalizable to healthcare settings with a lower spontaneous AF detection. There are no RCTs addressing clinical outcomes in patients with AF detected by single timepoint screening.

10.3.2. Prolonged screening

Studies using prolonged screening have shown an increased detection of AF leading to initiation of OAC. Two RCTs have investigated the effect on clinical outcomes in prolonged screening for AF. In the STROKESTOP trial (Systematic ECG Screening for Atrial Fibrillation Among 75 Year Old Subjects in the Region of Stockholm

----- Start of picture text ----- Screening Population Setting for Type of Follow approach example AF detection screening AF-CARE Invasive or After Patients with non-invasive ECG Initiated after C thromboembolic embolic stroke of index event Prolonged event unknown source Comorbidity and risk monitoring factor management (Class I) A Patient informed Any rhythm check, Avoid stroke and Ad-hoc to about Age ≥ 65 years, At the time of confirmed by ECG thromboembolism or risk of routine healthcare catch AF implications Routine heart detectionof AF thromboembolism contact rhythm assessment(Class I) R Reduce symptoms by rate and rhythm control Age ≥ 75 years, Structured national Population-based In patients with or ≥ 65 years plus or regional E risk factors CHAfactorsother2DS2-VA programmesscreening Non-invasive ECG(Class IIa) dynamic reassessmentEvaluation and ----- End of picture text -----

Figure 16 Approaches to screening for AF. AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/TIA/arterial thromboembolism (2 points), vascular disease, age 65– 74 years; ECG, electrocardiogram. See Figure 15 for non-invasive ECG methods.

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and Halland, Sweden), 75- and 76-year-olds were randomized to be invited to prolonged screening for AF using single-lead ECGs twice daily for 2 weeks, or to standard of care. After a median of 6.9 years there was a small reduction in the primary combined endpoint of all-cause mortality, stroke, systematic embolism, and severe bleeding in favour of prolonged screening (HR, 0.96; 95% CI, 0.92–1.00; P =.045). In the LOOP (Atrial Fibrillation Detected by Continuous ECG Monitoring) trial, individuals at increased risk of stroke were randomized to receive an implantable loop recorder that monitored heart rhythm for an average of 3.3 years, or to a control group receiving standard of care. Although there was a higher detection of AF (31.8%) and subsequent initiation of OAC in the loop recorder group compared with standard of care (12.2%), this was not accompanied by a difference in the primary outcome of stroke or systemic embolism. In a meta-analysis of recent RCTs on the outcome of stroke, a small but significant benefit was seen in favour of prolonged screening (RR, 0.91; 95% CI, 0.84–0.99). This was not repeated in a second meta-analysis including older RCTs, where no risk reduction was seen with regard to mortality or stroke. Notably, both these meta-analyses are likely underpowered to assess clinical outcomes.

10.4. Factors associated with incident AF

The most common risk predictors for incident (new-onset) AF are shown in Table 16. While the factors listed are robustly associated with incident AF in observational studies, it is not known whether the relationships are causal. Studies using Mendelian randomization (genetic proxies for risk factors to estimate causal effects) robustly implicate systolic BP and higher BMI as causal risk factors for incident AF.

A high degree of interaction occurs between all factors related to AF development (see Supplementary data online, Additional Evidence Table S33). For ease of clinical application, risk prediction tools have combined various factors, and have recently employed machine learning algorithms for prediction. Classical risk scores are also available with variable predictive ability and model performance (see Supplementary data online, Table S7). Improved outcomes when using these risk scores have yet to be demonstrated. Although knowledge is rapidly increasing about the genetic basis for AF in some patients, the value of genetic screening is limited at the present time (see Supplementary data online).

Table 16 Factors associated with incident AF

Demographic factorsAge1149–1151
Male sex1149–1152
European ancestry1149,1150
Lower socioeconomic status1150
Lifestyle behavioursSmoking/tobacco use1149–1151
Alcohol intake1149,1150
Physical inactivity1149,1150
Vigorous exercise1153–1156
Competitive or athlete-level endurance sports1151,1157
Caffeine1158–1160
Comorbidities and risk factorsHypertension1149–1151© ESC 2024
Heart failure178,1149–1151,1161
Valvular disease1149,1151,1162–1164
Coronary artery disease1149,1151,1161,1165
Peripheral arterial disease785
Congenital heart disease1149,1166
Heart rate, heart rate variability1167,1168
Total cholesterol1149,1150
Low-density lipoprotein cholesterol1150
High-density lipoprotein cholesterol1150
Triglycerides1150
Impaired glucose tolerance,1169–1172diabetes mellitus1149–1151,1169
Renal dysfunction/CKD1149–1151,1173,1174
Obesity1149–1151,1175,1176
Body mass index, weight1149–1151
Height1150
Sleep apnoea1149,1151,1177,1178
Chronic obstructive pulmonary disease1179
Subclinical atherosclerosisCoronary artery calcifcation1149,1151,1180
Carotid IMT and carotid plaque1149,1151,1181,1182
ECG abnormalitiesPR interval prolongation1149,1151,1183
Sick sinus syndrome1149,1184,1185
Wolff–Parkinson–White1149,1186
Genetic factorsFamily history of AF1149,1151,1187–1190
AF-susceptible loci identifed by GWAS1149,1151,1191,1192
Short QT syndrome1149
Genetic cardiomyopathies990,1193
BiomarkersC-reactive protein1150,1151
Fibrinogen1150
Growth differentiation factor-151194
Natriuretic peptides (atrial and B-type)1195–1200
Cardiac troponins1199
Infammatory biomarkers1149,1151
OthersThyroid dysfunction912,1149–1151
Autoimmune diseases1150
Air pollution1149,1201
Sepsis1149,1202
Psychological factors1203,1204

AF, atrial fibrillation; CKD, chronic kidney disease; GWAS, genome-wide association studies; HF, heart failure; IMT, intima-media thickness.

10.5. Primary prevention of AF

Preventing the onset of AF before clinical manifestation has clear potential to improve the lives of the general population and reduce the considerable health and social care costs associated with development of AF. Whereas the [C] in AF-CARE is focused on the effective management of risk factors and comorbidities to limit AF recurrence and progression, there is also evidence they can be targeted to prevent AF. Available data are presented below for hypertension, heart failure, type 2 diabetes mellitus, obesity, sleep apnoea syndrome,

Continued

ESC Guidelines

physical activity, and alcohol, although many other risk markers can also be targeted. Further information on each factor’s attributable risk for AF is provided in the Supplementary data online (see Supplementary data online, Evidence Table 32 and additional Evidence Tables S34–S39).

Recommendation Table 32 — Recommendations for primary prevention of AF (see also Evidence Table 32)

RecommendationClassaLevelb© ESC 2024
Maintaining optimal blood pressure is recommended in the general population to prevent AF, with ACE inhibitors or ARBs as frst-line therapy.1205–1207IB
Appropriate medical HF therapy is recommended in individuals with HFrEF to prevent AF.133,136,1208–1211IB
Maintaining normal weight (BMI 20–25 kg/m2) is recommended for the general population to prevent AF.208,1212,1213IB
Maintaining an active lifestyle is recommended to prevent AF, with the equivalent of 150–300 min per week of moderate intensity or 75–150 min per week of vigorous intensity aerobic physical activity.1214–1219IB
Avoidance of binge drinking and alcohol excess is recommended in the general population to prevent AF.1220–1223IB
Metformin or SGLT2 inhibitors should be considered for individuals needing pharmacological management of diabetes mellitus to prevent AF.1210,1211,1224–1226IIaB
Weight reduction should be considered in obese individuals to prevent AF.1212,1227–1231IIaB

ACE, angiotensin-converting enzyme; AF, atrial fibrillation; ARB, angiotensin receptor blocker; BMI, body mass index; HF, heart failure; HFrEF, heart failure with reduced ejection fraction; SGLT2, sodium-glucose cotransporter-2. aClass of recommendation. bLevel of evidence.

10.5.1. Hypertension

Management of hypertension has been associated with a reduction in incident AF. In the LIFE (Losartan Intervention for End point reduction in hypertension) trial, a 10 mmHg reduction in systolic BP was associated with a 17% reduction in incident AF. Secondary analysis of RCTs and observational studies suggest that ACE inhibitors or ARBs may be superior to beta-blockers, calcium channel blockers, or diuretics for the prevention of incident AF.

10.5.2. Heart failure

Long-standing established pharmacological treatments for HFrEF have been associated with a reduction in incident AF. The use of ACE inhibitors or ARBs in patients with known HFrEF was associated with a 44% reduction in incidence of AF. Similarly, beta-blockers in HFrEF led to a 33% reduction in the odds of incident AF. Mineralocorticoid receptor antagonists have also been shown to reduce the risk of new-onset AF by 42% in patients with HFrEF. Although there have been variable effects of SGLT2 inhibitors on

incident AF, several meta-analyses have demonstrated that there is an 18%–37% reduction in incident AF. However, treatment of HFrEF with sacubitril/valsartan has not yet been shown to confer any adjunctive benefit in reducing new-onset AF when compared with ACE inhibitors/ARBs alone. There is some evidence to suggest that effective CRT in eligible patients with HFrEF reduces the risk of incident AF. To date, no treatments in HFpEF have been shown to reduce incident AF.

10.5.3. Type 2 diabetes mellitus

The integrated care of type 2 diabetes, based on lifestyle and pharmacological treatments for comorbidities such as obesity, hypertension, and dyslipidaemia, are useful steps in preventing atrial remodelling and subsequent AF. Intensive glucose-lowering therapy targeting an HbA1c level of <6.0% (<42 mmol/mol) failed to show a protective effect on incident AF. More than glycaemic control per se, the class of glucose-lowering agent may influence the risk of AF. Insulin promotes adipogenesis and cardiac fibrosis, and sulfonylureas have been consistently associated with an increased risk of AF. Observational studies have associated metformin with lower rates of incident AF. Various recent studies and meta-analyses point to the positive role of SGLT2 inhibitors to reduce the risk of incident AF in diabetic and non-diabetic patients. Pooled data from 22 trials including 52 951 patients with type 2 diabetes and heart failure showed that SGLT2 inhibitors compared with placebo can significantly reduce the incidence of AF by 18% in studies on diabetes, and up to 37% in heart failure with or without type 2 diabetes.

10.5.4. Obesity

Management of weight is important in the prevention of AF. In a large population-based cohort study, normal weight was associated with a reduced risk of incident AF compared with those who were obese (4.7% increase in the risk of incident AF for each 1 kg/m[2 ] increase of BMI). In the Women’s Health Study, participants who became obese had a 41% increased risk of incident AF compared with those who maintained their BMI <30 kg/m. Similarly, observational studies in populations using bariatric surgery for weight loss in morbidly obese individuals (BMI ≥40 kg/m) have observed a lower risk of incident AF.

10.5.5. Sleep apnoea syndrome

Although it would seem rational to optimize sleep habits, to date there is no conclusive evidence to support this for the primary prevention of AF. The SAVE (Sleep Apnea cardioVascular Endpoints) trial failed to demonstrate a difference in clinical outcomes in those randomized to CPAP therapy or placebo. There was no difference in incident AF, albeit the analysis of AF was not based on systematic screening but rather on clinically documented AF.

10.5.6. Physical activity

Several studies have demonstrated beneficial effects of moderate physical activity on cardiovascular health. Moderate aerobic exercise may also reduce the risk of new-onset AF. It should be noted that the incidence of AF appears to be increased among athletes, with a meta-analysis of observational studies showing a 2.5-fold increased risk of AF compared with non-athlete controls.

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10.5.7. Alcohol intake

The premise that reducing alcohol intake can prevent AF is based on observational studies linking alcohol to an excess risk of incident AF in a dose-dependent manner (see Supplementary data online). In addition, a population cohort study of those with high alcohol consumption (>60 g/day for men and >40 g/day for women) found that abstinence from alcohol was associated with a lower incidence of AF compared with patients who continued heavy drinking.

11. Key messages

  • (1) General management: optimal treatment according to the AF-CARE pathway, which includes: [C] Comorbidity and risk factor management; [A] Avoid stroke and thromboembolism; [R] Reduce symptoms by rate and rhythm control; and [E] Evaluation and dynamic reassessment.

  • (2) Shared care: patient-centred AF management with joint decisionmaking and a multidisciplinary team.

  • (3) Equal care: avoid health inequalities based on gender, ethnicity, disability, and socioeconomic factors.

  • (4) Education: for patients, family members, caregivers, and healthcare professionals to aid shared decision-making.

  • (5) Diagnosis: clinical AF requires confirmation on an ECG device to

  • initiate risk stratification and AF management.

  • (6) Initial evaluation: medical history, assessment of symptoms and their impact, blood tests, echocardiography/other imaging, patient-reported outcome measures, and risk factors for thromboembolism and bleeding.

  • (7) Comorbidities and risk factors: thorough evaluation and management critical to all aspects of care for patients with AF to avoid recurrence and progression of AF, improve success of AF treatments, and prevent AF-related adverse outcomes.

  • (8) Focus on conditions associated with AF: including hypertension, heart failure, diabetes mellitus, obesity, obstructive sleep apnoea, physical inactivity, and high alcohol intake.

  • (9) Assessing the risk of thromboembolism: use locally validated risk tools or the CHA2DS2-VA score and assessment of other risk factors, with reassessment at periodic intervals to assist in decisions on anticoagulant prescription.

  • (10) Oral anticoagulants: recommended for all eligible patients, except those at low risk of incident stroke or thromboembolism (CHA2DS2-VA = 1 anticoagulation should be considered; CHA2DS2-VA ≥2 anticoagulation recommended).

  • (11) Choice of anticoagulant: DOACs (apixaban, dabigatran, edoxaban, and rivaroxaban) are preferred over VKAs (warfarin and others), except in patients with mechanical heart valves and mitral stenosis.

  • (12) Dose/range of anticoagulant: use full standard doses for DOACs unless the patient meets specific dose-reduction criteria; for VKAs, keep INR generally 2.0–3.0, and in range for >70% of the time.

  • (13) Switching anticoagulants: switch from a VKA to DOAC if risk of intracranial haemorrhage or poor control of INR levels.

  • (14) Bleeding risk: modifiable bleeding risk factors should be managed to improve safety; bleeding risk scores should not be used to decide on starting or withdrawing anticoagulants.

  • (15) Antiplatelet therapy: avoid combining anticoagulants and antiplatelet agents, unless the patient has an acute vascular event or needs interim treatment for procedures.

  • (16) Rate control therapy: use beta-blockers (any ejection fraction), digoxin (any ejection fraction), or diltiazem/verapamil (LVEF >40%) as initial therapy in the acute setting, an adjunct to rhythm control therapies, or as a sole treatment strategy to control heart rate and symptoms.

  • (17) Rhythm control: consider in all suitable AF patients, explicitly discussing with patients all potential benefits and risks of cardioversion, antiarrhythmic drugs, and catheter or surgical ablation to reduce symptoms and morbidity.

  • (18) Safety first: keep safety and anticoagulation in mind when considering rhythm control; e.g. delay cardioversion and provide at least 3 weeks of anticoagulation beforehand if AF duration >24 h, and consider toxicity and drug interactions for antiarrhythmic therapy.

  • (19) Cardioversion: use electrical cardioversion in cases of haemodynamic instability; otherwise choose electrical or pharmacological cardioversion based on patient characteristics and preferences.

  • (20) Indication for long-term rhythm control: the primary indication should be reduction in AF-related symptoms and improvement in quality of life; for selected patient groups, sinus rhythm maintenance can be pursued to reduce morbidity and mortality.

  • (21) Success or failure of rhythm control: continue anticoagulation according to the patient’s individual risk of thromboembolism, irrespective of whether they are in AF or sinus rhythm.

  • (22) Catheter ablation: consider as second-line option if antiarrhythmic drugs fail to control AF, or first-line option in patients with paroxysmal AF.

  • (23) Endoscopic or hybrid ablation: consider if catheter ablation fails, or an alternative to catheter ablation in persistent AF despite antiarrhythmic drugs.

  • (24) Atrial fibrillation ablation during cardiac surgery: perform in centres with experienced teams, especially for patients undergoing mitral valve surgery.

  • (25) Dynamic evaluation: periodically reassess therapy and give attention to new modifiable risk factors that could slow/reverse the progression of AF, increase quality of life, and prevent adverse outcomes.

12. Gaps in evidence

The following bullet list gives the most important gaps in evidence where new clinical trials could substantially aid the patient pathway:

Definition and clinical impact of AF

  • Paroxysmal AF is not one entity, and patterns of AF progression and regression are highly variable. It is uncertain what the relevance is for treatment strategies and management decisions.

  • Thirty seconds as definition for clinical AF needs validation and evaluation whether it is related to AF-related outcomes.

  • Definition, clinical features, diagnosis, and implementation for treatment choices of atrial cardiomyopathy in patients with AF is unsettled.

  • Diversity in AF presentation, underlying pathophysiological mechanisms, and associated comorbidities is incompletely understood with regard to differences in sex, gender, race/ethnicity, socioeconomic state, education, and differences between low-, moderate-, and highincome countries.

  • Personalized risk prediction for AF incidence, AF progression, and associated outcomes remains challenging.

ESC Guidelines

  • Insights into psychosocial and environmental factors and risk of AF and adverse outcomes in AF are understudied.

Patient-centred, multidisciplinary AF management

  • The benefit of additional education directed to patients, to family members, and to healthcare professionals in order to optimize shared decision-making still needs to be proved.

  • Access to patient-centred management according to the AF-CARE principles to ensure equality in healthcare provision and improve outcomes warrants evidence.

  • The place of remote monitoring and telemedicine for identification and follow-up of patients with AF, or its subgroups is non-established, though widely applied.

[C] Comorbidity and risk factor management

  • Methods to achieve consistent and reproducible weight loss in patients with AF requires substantial improvement. Despite some evidence demonstrating the benefits of weight loss, widespread adoption has been limited by the need for reproducible strategies.

  • The importance of sleep apnoea syndrome and its treatment on AF-related outcomes remains to be elucidated.

[A] Avoid stroke and thromboembolism

  • Data are lacking on how to treat patients with low risk of stroke (with a CHA2DS2-VA score of 0 or 1), as these patients were excluded from large RCTs.

  • Not enough evidence is available for OAC in elderly patients, frail polypharmacy patients, those with cognitive impairment/dementia, recent bleeding, previous ICH, severe end-stage renal failure, liver impairment, cancer, or severe obesity.

  • In elderly patients, routinely switching VKAs to DOACs is associated with increased bleeding risk; however, the reasons why this happens are unclear.

  • The selection of which patients with asymptomatic device-detected

  • subclinical AF benefit from OAC therapy needs to be defined.

  • There is a lack of evidence whether and when to (re)start anticoagulation after intracranial haemorrhage.

  • There is lack of evidence about optimal anticoagulation in patients with ischaemic stroke or left atrial thrombus while being treated with OAC.

  • There is uncertainty about the place of LAA closure and how to manage antithrombotic post-procedural management when LAAO is performed.

  • Balance of thromboembolism and bleeding is unclear in patients with AF and incidental cerebral artery aneurysms identified on brain MRI.

[R] Reduce symptoms by rate and rhythm control

  • In some patients, AF can be benign in terms of symptoms and outcomes. In which patients rhythm control is not needed warrants investigation.

  • Application of antiarrhythmic drugs has been hampered by poor effectiveness and side effects; however, new antiarrhythmic drugs are needed to increase the therapeutic arsenal for AF patients.

  • The amount of AF reduction obtained by rhythm control to improve outcomes is unknown.

  • Large catheter ablation studies showed no improved outcome of patients with AF. Some small studies in specific subpopulations have observed an improved outcome. This warrants further investigation to provide each patient with AF with personalized treatment goals.

  • Uncertainty exists on the time of duration of AF and risk of stroke when performing a cardioversion.

  • The value of diagnostic cardioversion for persistent AF in steering management of AF is unknown.

  • Decisions on continuation of OAC are completely based on stroke risk scores and irrespective of having (episodes) of AF; whether this holds for patients undergoing successful catheter ablation is uncertain.

  • Large variability in ablation strategies and techniques exist for patients with persistent AF, or after first failed catheter ablation for paroxysmal AF. The optimal catheter ablation strategy and techniques, however, are unknown.

  • Sham-controlled intervention studies are lacking to determine the effects on AF symptoms, quality of life, and PROMS, accounting for the placebo effect that is associated with interventions.

The AF-CARE pathway in specific clinical settings

  • The optimal duration of triple therapy in patients with AF at high risk of recurrent coronary events after acute coronary syndrome is unclear.

  • The role of the coronary vessel involved and whether this should impact on the duration of combined OAC and antiplatelet treatment needs further study.

  • The role of antiplatelet therapy in patients with AF and peripheral artery disease on OAC is uncertain.

  • The use of DOACs in patients with congenital heart disease, particularly in patients with complex corrected congenital defects, is poorly studied.

  • Improved risk stratification for stroke in patients with AF and cancer, or with post-operative or trigger-induced AF is needed to inform on OAC treatment decisions.

Screening and prevention of AF

  • There are a lack of adequately powered randomized controlled studies on ischaemic stroke rate in patients screened for AF, both in the primary prevention setting and in secondary prevention (poststroke), and its cost-effectiveness.

  • Population selection that might benefit the most from screening, the optimal duration of screening, and the burden of AF that might increase the risk for patients with screening-detected AF are uncertain.

  • Evaluation of strategies to support longer-term use of technologies for AF detection are awaited.

  • The role of photoplethysmography technology for AF screening in an effort to assess AF burden and reduce stroke is still unclear.

  • How new consumer devices and wearable technology can be used for diagnostic and monitoring purposes in routine clinical practice needs to be clarified.

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13. ‘What to do’ and ‘What not to do’ messages from the guidelines

Table 17 lists all Class I and Class III recommendations from the text alongside their level of evidence.

Table 17 ‘What to do’ and ‘what not to do’

RecommendationsClassaLevelb
Recommendations for the diagnosis of AF
Confrmation by an electrocardiogram (12-lead, multiple, or single leads) is recommended to establish the diagnosis of clinical AF and commence risk stratifcation and treatment.IA
Recommendations for symptom evaluation in patients with AF
Evaluating the impact of AF-related symptoms is recommended before and after major changes in treatment to inform shared decision-making and guide treatment choices.IB
Recommendations for diagnostic evaluation in patients with new AF
A transthoracic echocardiogram is recommended in patients with an AF diagnosis where this will guide treatment decisions.IC
Recommendations for patient-centred care and education
Education directed to patients, family members, caregivers, and healthcare professionals is recommended to optimize shared decision-making, facilitating open discussion of both the beneft and risk associated with each treatment option.IC
Access to patient-centred management according to the AF-CARE principles is recommended in all patients with AF, regardless of gender, ethnicity, and socioeconomic status, to ensure equality in healthcare provision and improve outcomes.IC
Recommendations for comorbidity and risk factor management in AF
Identifcation and management of risk factors and comorbidities is recommended as an integral part of AF care.IB
Blood pressure lowering treatment is recommended in patients with AF and hypertension to reduce recurrence and progression of AF and prevent adverse cardiovascular events.IB
Diuretics are recommended in patients with AF, HF, and congestion to alleviate symptoms and facilitate better AF management.IC
Appropriate medical therapy for HF is recommended in AF patients with HF and impaired LVEF to reduce symptoms and/or HF hospitalization and prevent AF recurrence.IB
Sodium-glucose cotransporter-2 inhibitors are recommended for patients with HF and AF regardless of left ventricular ejection fraction to reduce the risk of HF hospitalization and cardiovascular death.IA
Effective glycaemic control is recommended as part of comprehensive risk factor management in individuals with diabetes mellitus and AF, to reduce burden, recurrence, and progression of AF.IC
Weight loss is recommended as part of comprehensive risk factor management in overweight and obese individuals with AF to reduce symptoms and AF burden, with a target of 10% or more reduction in body weight.IB
A tailored exercise programme is recommended in individuals with paroxysmal or persistent AF to improve cardiorespiratory ftness and reduce AF recurrence.IB
Reducing alcohol consumption to≤3 standard drinks (≤30 grams of alcohol) per week is recommended as part of comprehensive risk factor management to reduce AF recurrence.IB
When screening for obstructive sleep apnoea in individuals with AF, using only symptom-based questionnaires is not recommended.IIIB
Recommendations to assess and manage thromboembolic risk in AF
Oral anticoagulation is recommended in patients with clinical AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.IA
A CHA2DS2-VA score of 2 or more is recommended as an indicator of elevated thromboembolic risk for decisions on initiating oral anticoagulation.IC
Oral anticoagulation is recommended in all patients with AF and hypertrophic cardiomyopathy or cardiac amyloidosis, regardless of CHA2DS2-VA score, to prevent ischaemic stroke and thromboembolism.IB
Individualized reassessment of thromboembolic risk is recommended at periodic intervals in patients with AF to ensure anticoagulation is started in appropriate patients.IB
Antiplatelet therapy is not recommended as an alternative to anticoagulation in patients with AF to prevent ischaemic stroke and thromboembolism.IIIA
Using the temporal pattern of clinical AF (paroxysmal, persistent, or permanent) is not recommended to determine the need for oral anticoagulation.IIIB

Continued

ESC Guidelines

Recommendations for oral anticoagulation in AFRecommendations for oral anticoagulation in AF
Direct oral anticoagulants are recommended in preference to VKAs to prevent ischaemic stroke and thromboembolism, except in patients with mechanical heart valves or moderate-to-severe mitral stenosis.IA
A target INR of 2.0–3.0 is recommended for patients with AF prescribed a VKA for stroke prevention to ensure safety and effectiveness.IB
Switching to a DOAC is recommended for eligible patients that have failed to maintain an adequate time in therapeutic range on a VKA (TTR<70%) to prevent thromboembolism and intracranial haemorrhage.IB
A reduced dose of DOAC therapy is not recommended, unless patients meet DOAC-specifc criteria, to prevent underdosing and avoidable thromboembolic events.IIIB
Recommendations for combining antiplatelet drugs with anticoagulants for stroke prevention
Adding antiplatelet treatment to oral anticoagulation is not recommended in AF patients for the goal of preventing ischaemic stroke or thromboembolism.IIIB
Recommendations for thromboembolism despite anticoagulation
Adding antiplatelet treatment to anticoagulation is not recommended in patients with AF to prevent recurrent embolic stroke.IIIB
Switching from one DOAC to another, or from a DOAC to a VKA, without a clear indication is not recommended in patients with AF to prevent recurrent embolic stroke.IIIB
Recommendations for surgical left atrial appendage occlusion
Surgical closure of the left atrial appendage is recommended as an adjunct to oral anticoagulation in patients with AF undergoing cardiac surgery to prevent ischaemic stroke and thromboembolism.IB
Recommendations for assessment of bleeding risk
Assessment and management of modifable bleeding risk factors is recommended in all patients eligible for oral anticoagulation, as part of shared decision-making to ensure safety and prevent bleeding.IB
Use of bleeding risk scores to decide on starting or withdrawing oral anticoagulation is not recommended in patients with AF to avoid under-use of anticoagulation.IIIB
Recommendations for management of bleeding in anticoagulated patients
Interrupting anticoagulation and performing diagnostic or treatment interventions is recommended in AF patients with active bleeding until the cause of bleeding is identifed and resolved.IC
Recommendations for heart rate control in patients with AF
Rate control therapy is recommended in patients with AF, as initial therapy in the acute setting, an adjunct to rhythm control therapies, or as a sole treatment strategy to control heart rate and reduce symptoms.IB
Beta-blockers, diltiazem, verapamil, or digoxin are recommended as frst-choice drugs in patients with AF and LVEF>40% to control heart rate and reduce symptoms.IB
Beta-blockers and/or digoxin are recommended in patients with AF and LVEF≤40% to control heart rate and reduce symptoms.IB
Recommendations for general concepts in rhythm control
Electrical cardioversion is recommended in AF patients with acute or worsening haemodynamic instability to improve immediate patient outcomes.IC
Direct oral anticoagulants are recommended in preference to VKAs in eligible patients with AF undergoing cardioversion for thromboembolic risk reduction.IA
Therapeutic oral anticoagulation for at least 3 weeks (adherence to DOACs or INR≥2.0 for VKAs) is recommended before scheduled cardioversion of AF and atrial futter to prevent procedure-related thromboembolism.IB
Transoesophageal echocardiography is recommended if 3 weeks of therapeutic oral anticoagulation has not been provided, for exclusion of cardiac thrombus to enable early cardioversion.IB
Oral anticoagulation is recommended to continue for at least 4 weeks in all patients after cardioversion and long-term in patients with thromboembolic risk factor(s) irrespective of whether sinus rhythm is achieved, to prevent thromboembolism.IB
Early cardioversion is not recommended without appropriate anticoagulation or transoesophageal echocardiography if AF duration is longer than 24 h, or there is scope to wait for spontaneous cardioversion.IIIC
Recommendations for pharmacological cardioversion of AF
Intravenous fecainide or propafenone is recommended when pharmacological cardioversion of recent-onset AF is desired, excluding patients with severe left ventricular hypertrophy, HFrEF, or coronary artery disease.IA
Intravenous vernakalant is recommended when pharmacological cardioversion of recent-onset AF is desired, excluding patients with recent ACS, HFrEF, or severe aortic stenosis.IA
Intravenous amiodarone is recommended when cardioversion of AF in patients with severe left ventricular hypertrophy, HFrEF, or coronary artery disease is desired, accepting there may be a delay in cardioversion.IA
Pharmacological cardioversion is not recommended for patients with sinus node dysfunction, atrioventricular conduction disturbances, or prolonged QTc(>500 ms), unless risks forproarrhythmia and bradycardia have been considered.IIIC

Continued

ESC Guidelines 3381

Recommendations for antiarrhythmic drugs for long-term maintenance of sinus rhythmRecommendations for antiarrhythmic drugs for long-term maintenance of sinus rhythm
Amiodarone is recommended in patients with AF and HFrEF requiring long-term antiarrhythmic drug therapy to prevent recurrence and progression of AF, with careful consideration and monitoring for extracardiac toxicity.IA
Dronedarone is recommended in patients with AF requiring long-term rhythm control, including those with HFmrEF, HFpEF, ischaemic heart disease, or valvular disease to prevent recurrence and progression of AF.IA
Flecainide or propafenone is recommended in patients with AF requiring long-term rhythm control to prevent recurrence and progression of AF, excluding those with impaired left ventricular systolic function, severe left ventricular hypertrophy, or coronary artery disease.IA
Antiarrhythmic drug therapy is not recommended in patients with advanced conduction disturbances unless antibradycardia pacing is provided.IIIC
Recommendations for catheter ablation of AF
Shared decision-making
Shared decision-making is recommended when considering catheter ablation for AF, taking into account procedural risks, likely benefts, and risk factors for AF recurrence.IC
Atrial fbrillation patients resistant or intolerant to antiarrhythmic drug therapy
Catheter ablation is recommended in patients with paroxysmal or persistent AF resistant or intolerant to antiarrhythmic drug therapy to reduce symptoms, recurrence, and progression of AF.IA
First-line rhythm control therapy
Catheter ablation is recommended as a frst-line option within a shared decision-making rhythm control strategy in patients with paroxysmal AF, to reduce symptoms, recurrence, and progression of AF.IA
Patients with heart failure
Atrial fbrillation catheter ablation is recommended in patients with AF and HFrEF with high probability of tachycardia-induced cardiomyopathy to reverse left ventricular dysfunction.IB
Recommendations for anticoagulation in patients undergoing catheter ablation
Initiation of oral anticoagulation is recommended at least 3 weeks prior to catheter-based ablation in AF patients at elevated thromboembolic risk, to prevent peri-procedural ischaemic stroke and thromboembolism.IC
Uninterrupted oral anticoagulation is recommended in patients undergoing AF catheter ablation to prevent peri-procedural ischaemic stroke and thromboembolism.IA
Continuation of oral anticoagulation is recommended for at least 2 months after AF ablation in all patients, irrespective of rhythm outcome or CHA2DS2-VA score, to reduce the risk of peri-procedural ischaemic stroke and thromboembolism.IC
Continuation of oral anticoagulation is recommended after AF ablation according to the patient’s CHA2DS2-VA score, and not the perceived success of the ablation procedure, to prevent ischaemic stroke and thromboembolism.IC
Recommendations for endoscopic and hybrid AF ablation
Continuation of oral anticoagulation is recommended in patients with AF at elevated thromboembolic risk after concomitant, endoscopic, or hybrid AF ablation, independent of rhythm outcome or LAA exclusion, to prevent ischaemic stroke and thromboembolism.IC
Recommendations for AF ablation during cardiac surgery
Concomitant surgical ablation is recommended in patients undergoing mitral valve surgery and AF suitable for a rhythm control strategy to prevent symptoms and recurrence of AF, with shared decision-making supported by an experienced team of electrophysiologists and arrhythmia surgeons.IA
Intraprocedural imaging for detection of left atrial thrombus in patients undergoing surgical ablation is recommended to guide surgical strategy, independent of oral anticoagulant use, to prevent peri-procedural ischaemic stroke and thromboembolism.IC
Recommendations for patients with acute coronary syndromes or undergoing percutaneous intervention
General recommendations for patients with AF and an indication for concomitant antiplatelet therapy
For combinations with antiplatelet therapy, a DOAC is recommended in eligible patients in preference to a VKA to mitigate bleeding risk and prevent thromboembolism.IA
Recommendations for AF patients with ACS
Early cessation (≤1 week) of aspirin and continuation of an oral anticoagulant (preferably DOAC) with a P2Y12inhibitor (preferably clopidogrel) for up to 12 months is recommended in AF patients with ACS undergoing an uncomplicated PCI to avoid major bleeding, if the risk of thrombosis is low or bleeding risk is high.IA
Recommendations for AF patients undergoing PCI
After uncomplicated PCI, early cessation (≤1 week) of aspirin and continuation of an oral anticoagulant and a P2Y12inhibitor (preferably clopidogrel)for upto 6 months is recommended to avoid major bleeding, if ischaemic risk is low.IA

Continued

ESC Guidelines

Recommendations for AF patients with chronic coronary or vascular diseaseRecommendations for AF patients with chronic coronary or vascular diseaseB A B B A C C C B B C B B B B B © ESC 2024
Antiplatelet therapy beyond 12 months is not recommended in stable patients with chronic coronary or vascular disease treated with oral anticoagulation, due to lack of effcacy and to avoid major bleeding.IIIB
Recommendations for management of post-operative AF
Peri-operative amiodarone therapy is recommended where drug therapy is desired to prevent post-operative AF after cardiac surgery.IA
Routine use of beta-blockers is not recommended in patients undergoing non-cardiac surgery for the prevention of post-operative AF.IIIB
Recommendations for patients with embolic stroke of unknown source
Prolonged monitoring for AF is recommended in patients with ESUS to inform on AF treatment decisions.IB
Initiation of oral anticoagulation in ESUS patients without documented AF is not recommended due to lack of effcacy in preventing ischaemic stroke and thromboembolism.IIIA
Recommendations for patients with AF during pregnancy
Immediate electrical cardioversion is recommended in patients with AF during pregnancy and haemodynamic instability or pre-excited AF to improve maternal and foetal outcomes.IC
Therapeutic anticoagulation with LMWHs or VKAs (except VKAs for the frst trimester or beyond Week 36) is recommended for pregnant patients with AF at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.IC
Beta-1 selective blockers are recommended for heart rate control of AF in pregnancy to reduce symptoms and improve maternal and foetal outcomes, excluding atenolol.IC
Recommendations for prevention of thromboembolism in atrial futter
Oral anticoagulation is recommended in patients with atrial futter at elevated thromboembolic risk to prevent ischaemic stroke and thromboembolism.IB
Recommendations for screening for AF
Review of an ECG (12-lead, single, or multiple leads) by a physician is recommended to provide a defnite diagnosis of AF and commence appropriate management.IB
Routine heart rhythm assessment during healthcare contact is recommended in all individuals aged≥65 years for earlier detection of AF.IC
Recommendations for primary prevention of AF
Maintaining optimal blood pressure is recommended in the general population to prevent AF, with ACE inhibitors or ARBs as frst-line therapy.IB
Appropriate medical HF therapy is recommended in individuals with HFrEF to prevent AF.IB
Maintaining normal weight (BMI 20–25 kg/m2) is recommended for the general population to prevent AF.IB
Maintaining an active lifestyle is recommended to prevent AF, with the equivalent of 150–300 min per week of moderate intensity or 75– 150 min per week of vigorous intensity aerobic physical activity.IB
Avoidance of binge drinking and alcohol excess is recommended in the general population to prevent AF.IB

AAD, antiarrhythmic drugs; ACEi, angiotensin-converting enzyme inhibitor; ACS, acute coronary syndromes; AF, atrial fibrillation; AF-CARE, atrial fibrillation—[C] Comorbidity and risk factor management, [A] Avoid stroke and thromboembolism, [R] Reduce symptoms by rate and rhythm control, [E] Evaluation and dynamic reassessment; AFL, atrial flutter; ARB, angiotensin receptor blocker; BMI, body mass index; CHA2DS2-VA, congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, prior stroke/transient ischaemic attack/arterial thromboembolism (2 points), vascular disease, age 65–74 years; DOAC, direct oral anticoagulant; ECG, electrocardiogram; ESUS, embolic stroke of undetermined source; HF, heart failure; HFmrEF, heart failure with mildly reduced ejection fraction; HFpEF, heart failure with preserved ejection fraction; HFrEF, heart failure with reduced ejection fraction; INR, international normalized ratio of prothrombin time; LAA, left atrial appendage; LMWH, low molecular weight heparin; LVEF, left ventricular ejection fraction; PCI, percutaneous intervention; SGLT2, sodium-glucose cotransporter-2; TTR, time in therapeutic range; VKA, vitamin K antagonist. aClass of recommendation. bLevel of evidence.

14. Evidence tables

Evidence tables are available at European Heart Journal online.

15. Data availability statement

No new data were generated or analysed in support of this research.

16. Author information

Author/Task Force Member Affiliations: Michiel Rienstra, Department of Cardiology, University of Groningen, University

Medical Center Groningen, Groningen, Netherlands; Karina V. Bunting, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom, Cardiology Department, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom; Ruben Casado-Arroyo, Department of Cardiology, H.U.B.-Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium; Valeria Caso, Stroke Unit, Santa della Misericordia Hospital, Perugia, Italy; Harry J.G.M. Crijns, Cardiology Maastricht University Medical Centre, Maastricht, Netherlands, Cardiology Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands; Tom J. R. De Potter, Department of Cardiology, OLV Hospital,

ESC Guidelines 3383

Aalst, Belgium; Jeremy Dwight (United Kingdom), ESC Patient Forum, Sophia Antipolis, France; Luigina Guasti, Department of Medicine and Surgery, University of Insubria, Varese, Italy, Division of Geriatrics and Clinical Gerontology, ASST-Settelaghi, Varese, Italy; Thorsten Hanke, Clinic For Cardiac Surgery, Asklepios Klinikum, Harburg, Hamburg, Germany; Tiny Jaarsma, Department of Cardiology, Linkoping University, Linkoping, Sweden, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands; Maddalena Lettino, Department for Cardiac, Thoracic and Vascular Diseases, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy; Maja-Lisa Løchen, Deparment of Clincal Medicine UiT, The Arctic University of Norway, Tromsø, Norway, Department of Cardiology, University Hospital of North Norway, Tromsø, Norway; R. Thomas Lumbers, Institute of Health Informatics, University College London, London, United Kingdom, Saint Bartholomew’s Hospital, Barts Health NHS Trust, London, United Kingdom, University College Hospital, University College London Hospitals NHS Trust, London, United Kingdom; Bart Maesen, Department of Cardiothoracic Surgery, Maastricht University Medical Centre+, Maastricht, Netherlands, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands; Inge Mølgaard (Denmark), ESC Patient Forum, Sophia Antipolis, France; Giuseppe M.C. Rosano, Department of Human Sciences and Promotion of Quality of Life, Chair of Pharmacology, San Raffaele University of Rome, Rome, Italy, Cardiology, San Raffaele Cassino Hospital, Cassino, Italy, Cardiovascular Academic Group, St George’s University Medical School, London, United Kingdom; Prashanthan Sanders, Centre for Heart Rhythm Disorders, University of Adelaide, Adelaide, Australia, Department of Cardiology, Royal Adelaide Hospital, Adelaide, Australia; Renate B. Schnabel, Cardiology University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany, German Center for Cardiovascular Research (DZHK) Partner site Hamburg/Kiel/Lübeck, Germany; Piotr Suwalski, Department of Cardiac Surgery and Transplantology, National Medical Institute of the Ministry of Interior and Administration, Centre of Postgraduate Medical Education, Warsaw, Poland; Emma Svennberg, Department of Medicine, Karolinska University Hospital Huddinge, Karolinska Institutet, Stockholm, Sweden, Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden; Juan Tamargo, Pharmacology and Toxicology School of Medicine, Universidad Complutense, Madrid, Spain; Otilia Tica, Department of Cardiology, Emergency County Clinical Hospital of Bihor, Oradea, Romania, Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, United Kingdom; Vassil Traykov, Department of Invasive Electrophysiology, Acibadem City Clinic Tokuda University Hospital, Sofia, Bulgaria; and Stylianos Tzeis, Cardiology Department, Mitera Hospital, Athens, Greece.

17. Appendix

ESC Scientific Document Group

Includes Document Reviewers and ESC National Cardiac Societies.

Document Reviewers: Nikolaos Dagres (CPG Review Co-ordinator) (Germany), Bianca Rocca (CPG Review Co-ordinator) (Italy), Syed Ahsan (United Kingdom), Pietro Ameri (Italy), Elena Arbelo (Spain), Axel Bauer (Austria), Michael A. Borger (Germany), Sergio Buccheri (Sweden), Barbara Casadei (United Kingdom), Ovidiu Chioncel (Romania), Dobromir Dobrev (Germany), Laurent Fauchier

(France), Bruna Gigante (Sweden), Michael Glikson (Israel), Ziad Hijazi (Sweden), Gerhard Hindricks (Germany), Daniela Husser (Germany), Borja Ibanez (Spain), Stefan James (Sweden), Stefan Kaab (Germany), Paulus Kirchhof (Germany), Lars Køber (Denmark), Konstantinos C. Koskinas (Switzerland), Thomas Kumler (Denmark), Gregory Y.H. Lip (United Kingdom), John Mandrola (United States of America), Nikolaus Marx (Germany), John William Mcevoy (Ireland), Borislava Mihaylova (United Kingdom), Richard Mindham (United Kingdom), Denisa Muraru (Italy), Lis Neubeck (United Kingdom), Jens Cosedis Nielsen (Denmark), Jonas Oldgren (Sweden), Maurizio Paciaroni (Italy), Agnes A. Pasquet (Belgium), Eva Prescott (Denmark), Filip Rega (Belgium), Francisco Javier Rossello (Spain), Marcin Rucinski (Poland), Sacha P. Salzberg (Switzerland), Sam Schulman (Canada), Philipp Sommer (Germany), Jesper Hastrup Svendsen (Denmark), Jurrien M. ten Berg (Netherlands), Hugo Ten Cate (Netherlands), Ilonca Vaartjes (Netherlands), Christiaan Jm. Vrints (Belgium), Adam Witkowski (Poland), and Katja Zeppenfeld (Netherlands).

ESC National Cardiac Societies actively involved in the review process of the 2024 ESC Guidelines for the management of atrial fibrillation:

Albania: Albanian Society of Cardiology, Leonard Simoni; Algeria: Algerian Society of Cardiology, Brahim Kichou; Armenia: Armenian Cardiologists Association, Hamayak S. Sisakian; Austria: Austrian Society of Cardiology, Daniel Scherr; Belgium: Belgian Society of Cardiology, Frank Cools; Bosnia and Herzegovina: Association of Cardiologists of Bosnia and Herzegovina, Elnur Smajić; Bulgaria: Bulgarian Society of Cardiology, Tchavdar Shalganov; Croatia: Croatian Cardiac Society, Sime Manola; Cyprus: Cyprus Society of Cardiology, Panayiotis Avraamides; Czechia: Czech Society of Cardiology, Milos Taborsky; Denmark: Danish Society of Cardiology, Axel Brandes; Egypt: Egyptian Society of Cardiology, Ahmed M. El-Damaty; Estonia: Estonian Society of Cardiology, Priit Kampus; Finland: Finnish Cardiac Society, Pekka Raatikainen; France: French Society of Cardiology, Rodrigue Garcia; Georgia: Georgian Society of Cardiology, Kakhaber Etsadashvili; Germany: German Cardiac Society, Lars Eckardt; Greece: Hellenic Society of Cardiology, Eleftherios Kallergis; Hungary: Hungarian Society of Cardiology, László Gellér; Iceland: Icelandic Society of Cardiology, Kristján Guðmundsson; Ireland: Irish Cardiac Society, Jonathan Lyne; Israel: Israel Heart Society, Ibrahim Marai; Italy: Italian Federation of Cardiology, Furio Colivicchi; Kazakhstan: Association of Cardiologists of Kazakhstan, Ayan Suleimenovich Abdrakhmanov; Kosovo (Republic of): Kosovo Society of Cardiology, Ibadete Bytyci; Kyrgyzstan: Kyrgyz Society of Cardiology, Alina Kerimkulova; Latvia: Latvian Society of Cardiology, Kaspars Kupics; Lebanon: Lebanese Society of Cardiology, Marwan Refaat; Libya: Libyan Cardiac Society, Osama Abdulmajed Bheleel; Lithuania: Lithuanian Society of Cardiology, Jūratė Barysienė; Luxembourg: Luxembourg Society of Cardiology, Patrick Leitz; Malta: Maltese Cardiac Society, Mark A. Sammut; Moldova (Republic of): Moldavian Society of Cardiology, Aurel Grosu; Montenegro: Montenegro Society of Cardiology, Nikola Pavlovic; Morocco: Moroccan Society of Cardiology, Abdelhamid Moustaghfir; Netherlands: Netherlands Society of Cardiology, Sing-Chien Yap; North Macedonia: National Society of Cardiology of North Macedonia, Jane Taleski; Norway: Norwegian Society of Cardiology, Trine Fink; Poland: Polish Cardiac Society, Jaroslaw Kazmierczak; Portugal: Portuguese Society of Cardiology, Victor M. Sanfins; Romania: Romanian Society of Cardiology, Dragos Cozma; San

ESC Guidelines

Marino: San Marino Society of Cardiology, Marco Zavatta; Serbia: Cardiology Society of Serbia, Dragan V. Kovačević; Slovakia: Slovak Society of Cardiology, Peter Hlivak; Slovenia: Slovenian Society of Cardiology, Igor Zupan; Spain: Spanish Society of Cardiology, David Calvo; Sweden: Swedish Society of Cardiology, Anna Björkenheim; Switzerland: Swiss Society of Cardiology, Michael Kühne; Tunisia: Tunisian Society of Cardiology and Cardiovascular Surgery, Sana Ouali; Turkey: Turkish Society of Cardiology, Sabri Demircan; Ukraine: Ukrainian Association of Cardiology, Oleg S. Sychov; United Kingdom of Great Britain and Northern Ireland: British Cardiovascular Society, Andre Ng; and Uzbekistan: Association of Cardiologists of Uzbekistan, Husniddin Kuchkarov.

ESC Clinical Practice Guidelines (CPG) Committee: Eva Prescott (Chairperson) (Denmark), Stefan James (Co-Chairperson) (Sweden), Elena Arbelo (Spain), Colin Baigent (United Kingdom), Michael A. Borger (Germany), Sergio Buccheri (Sweden), Borja Ibanez (Spain), Lars Køber (Denmark), Konstantinos C. Koskinas (Switzerland), John William McEvoy (Ireland), Borislava Mihaylova (United Kingdom), Richard Mindham (United Kingdom), Lis Neubeck (United Kingdom), Jens Cosedis Nielsen (Denmark), Agnes A. Pasquet (Belgium), Amina Rakisheva (Kazakhstan), Bianca Rocca (Italy), Xavier Rossello (Spain), Ilonca Vaartjes (Netherlands), Christiaan Vrints (Belgium), Adam Witkowski (Poland), and Katja Zeppenfeld (Netherlands). Andrea Sarkozy* (Belgium) *Contributor either stepped down or was engaged in only a part of the review process.

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  12. Wang EY, Hulme OL, Khurshid S, Weng LC, Choi SH, Walkey AJ, et al. Initial precipitants and recurrence of atrial fibrillation. Circ Arrhythm Electrophysiol 2020; 13:e007716. https://doi.org/10.1161/CIRCEP.119.007716

  13. Corica B, Romiti GF, Basili S, Proietti M. Prevalence of new-onset atrial fibrillation and associated outcomes in patients with sepsis: a systematic review and meta-analysis. J Pers Med 2022; 12:547. https://doi.org/10.3390/jpm12040547

  14. Bedford JP, Ferrando-Vivas P, Redfern O, Rajappan K, Harrison DA, Watkinson PJ, et al. New-onset atrial fibrillation in intensive care: epidemiology and outcomes. Eur Heart J Acute Cardiovasc Care 2022; 11:620–8. https://doi.org/10.1093/ehjacc/zuac080

  15. Wazni OM, Marrouche NF, Martin DO, Verma A, Bhargava M, Saliba W, et al. Radiofrequency ablation vs antiarrhythmic drugs as first-line treatment of symptomatic atrial fibrillation: a randomized trial. JAMA 2005; 293:2634–40. https://doi.org/10. 1001/jama.293.21.2634

  16. Andrade JG, Wells GA, Deyell MW, Bennett M, Essebag V, Champagne J, et al. Cryoablation or drug therapy for initial treatment of atrial fibrillation. N Engl J Med 2021; 384:305–15. https://doi.org/10.1056/NEJMoa2029980

  17. Kirchhof P, Camm AJ, Goette A, Brandes A, Eckardt L, Elvan A, et al. Early rhythmcontrol therapy in patients with atrial fibrillation. N Engl J Med 2020; 383:1305–16. https://doi.org/10.1056/NEJMoa2019422

  18. Coats AJS, Heymans S, Farmakis D, Anker SD, Backs J, Bauersachs J, et al. Atrial disease and heart failure: the common soil hypothesis proposed by the heart failure association of the European Society of Cardiology. Eur Heart J 2022: 43:863–7. https://doi. org/10.1093/eurheartj/ehab834

  19. Schnabel RB, Marinelli EA, Arbelo E, Boriani G, Boveda S, Buckley CM, et al. Early diagnosis and better rhythm management to improve outcomes in patients with atrial fibrillation: the 8th AFNET/EHRA consensus conference. Europace 2023; 25:6–27. https:// doi.org/10.1093/europace/euac062

  20. Goette A, Kalman JM, Aguinaga L, Akar J, Cabrera JA, Chen SA, et al. EHRA/HRS/ APHRS/SOLAECE expert consensus on atrial cardiomyopathies: definition, characterization, and clinical implication. Europace 2016; 18:1455–90. https://doi.org/10.1093/ europace/euw161

  21. Sagris D, Georgiopoulos G, Pateras K, Perlepe K, Korompoki E, Milionis H, et al. Atrial high-rate episode duration thresholds and thromboembolic risk: a systematic review and meta-analysis. J Am Heart Assoc 2021; 10:e022487. https://doi.org/10.1161/JAHA. 121.022487

  22. Kaufman ES, Israel CW, Nair GM, Armaganijan L, Divakaramenon S, Mairesse GH, et al. Positive predictive value of device-detected atrial high-rate episodes at different rates and durations: an analysis from ASSERT. Heart Rhythm 2012; 9:1241–6. https:// doi.org/10.1016/j.hrthm.2012.03.017

  23. Miyazawa K, Pastori D, Martin DT, Choucair WK, Halperin JL, Lip GYH. Characteristics of patients with atrial high rate episodes detected by implanted defibrillator and resynchronization devices. Europace 2022; 24:375–83. https://doi.org/10. 1093/europace/euab186

  24. Vitolo M, Imberti JF, Maisano A, Albini A, Bonini N, Valenti AC, et al. Device-detected atrial high rate episodes and the risk of stroke/thromboembolism and atrial fibrillation incidence: a systematic review and meta-analysis. Eur J Intern Med 2021; 92:100–6. https://doi.org/10.1016/j.ejim.2021.05.038

  25. Connolly SJ, Ezekowitz MD, Yusuf S, Eikelboom J, Oldgren J, Parekh A, et al. Dabigatran versus warfarin in patients with atrial fibrillation. N Engl J Med 2009; 361:1139–51. https://doi.org/10.1056/NEJMoa0905561

  26. Giugliano RP, Ruff CT, Braunwald E, Murphy SA, Wiviott SD, Halperin JL, et al. Edoxaban versus warfarin in patients with atrial fibrillation. N Engl J Med 2013; 369: 2093–104. https://doi.org/10.1056/NEJMoa1310907

  27. Granger CB, Alexander JH, McMurray JJ, Lopes RD, Hylek EM, Hanna M, et al. Apixaban versus warfarin in patients with atrial fibrillation. N Engl J Med 2011; 365: 981–92. https://doi.org/10.1056/NEJMoa1107039

  28. Patel MR, Mahaffey KW, Garg J, Pan G, Singer DE, Hacke W, et al. Rivaroxaban versus warfarin in nonvalvular atrial fibrillation. N Engl J Med 2011; 365:883–91. https://doi. org/10.1056/NEJMoa1009638

  29. Stroke prevention in atrial fibrillation study. Final results. Circulation 1991; 84:527–39. https://doi.org/10.1161/01.CIR.84.2.527

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  31. Schnabel RB, Pecen L, Ojeda FM, Lucerna M, Rzayeva N, Blankenberg S, et al. Gender differences in clinical presentation and 1-year outcomes in atrial fibrillation. Heart 2017; 103:1024–30. https://doi.org/10.1136/heartjnl-2016-310406

  32. Simantirakis EN, Papakonstantinou PE, Chlouverakis GI, Kanoupakis EM, Mavrakis HE, Kallergis EM, et al. Asymptomatic versus symptomatic episodes in patients with paroxysmal atrial fibrillation via long-term monitoring with implantable loop recorders. Int J Cardiol 2017; 231:125–30. https://doi.org/10.1016/j.ijcard.2016.12.025

  33. Verma A, Champagne J, Sapp J, Essebag V, Novak P, Skanes A, et al. Discerning the incidence of symptomatic and asymptomatic episodes of atrial fibrillation before and after catheter ablation (DISCERN AF): a prospective, multicenter study. JAMA Intern Med 2013; 173:149–56. https://doi.org/10.1001/jamainternmed.2013.1561

ESC Guidelines 3385

  1. Sgreccia D, Manicardi M, Malavasi VL, Vitolo M, Valenti AC, Proietti M, et al. Comparing outcomes in asymptomatic and symptomatic atrial fibrillation: a systematic review and meta-analysis of 81,462 patients. J Clin Med 2021; 10:3979. https://doi.org/ 10.3390/jcm10173979

  2. Holmes DN, Piccini JP, Allen LA, Fonarow GC, Gersh BJ, Kowey PR, et al. Defining clinically important difference in the atrial fibrillation effect on quality-of-life score. Circ Cardiovasc Qual Outcomes 2019; 12:e005358. https://doi.org/10.1161/ CIRCOUTCOMES.118.005358

  3. Jones J, Stanbury M, Haynes S, Bunting KV, Lobban T, Camm AJ, et al. Importance and assessment of quality of life in symptomatic permanent atrial fibrillation: patient focus groups from the RATE-AF trial. Cardiology 2020; 145:666–75. https://doi.org/10.1159/ 000511048

  4. Abu HO, Wang W, Otabil EM, Saczynski JS, Mehawej J, Mishra A, et al. Perception of atrial fibrillation symptoms: impact on quality of life and treatment in older adults. J Am Geriatr Soc 2022; 70:2805–17. https://doi.org/10.1111/jgs.17954

  5. Rienstra M, Vermond RA, Crijns HJ, Tijssen JG, Van Gelder IC; RACE Investigators. Asymptomatic persistent atrial fibrillation and outcome: results of the RACE study. Heart Rhythm 2014; 11:939–45. https://doi.org/10.1016/j.hrthm.2014.03.016

  6. Rienstra M, Hobbelt AH, Alings M, Tijssen JGP, Smit MD, Brugemann J, et al. Targeted therapy of underlying conditions improves sinus rhythm maintenance in patients with persistent atrial fibrillation: results of the RACE 3 trial. Eur Heart J 2018; 39:2987–96. https://doi.org/10.1093/eurheartj/ehx739

  7. Mulder BA, Van Veldhuisen DJ, Crijns HJ, Tijssen JG, Hillege HL, Alings M, et al. Digoxin in patients with permanent atrial fibrillation: data from the RACE II study. Heart Rhythm 2014; 11:1543–50. https://doi.org/10.1016/j.hrthm.2014.06.007

  8. Kloosterman M, Crijns H, Mulder BA, Groenveld HF, Van Veldhuisen DJ, Rienstra M, et al. Sex-related differences in risk factors, outcome, and quality of life in patients with permanent atrial fibrillation: results from the RACE II study. Europace 2020; 22: 1619–27. https://doi.org/10.1093/europace/euz300

  9. Park YJ, Park JW, Yu HT, Kim TH, Uhm JS, Joung B, et al. Sex difference in atrial fibrillation recurrence after catheter ablation and antiarrhythmic drugs. Heart 2023; 109: 519–26. https://doi.org/10.1136/heartjnl-2021-320601

  10. Kupper N, van den Broek KC, Widdershoven J, Denollet J. Subjectively reported symptoms in patients with persistent atrial fibrillation and emotional distress. Front Psychol 2013; 4:192. https://doi.org/10.3389/fpsyg.2013.00192

  11. Schnabel RB, Michal M, Wilde S, Wiltink J, Wild PS, Sinning CR, et al. Depression in atrial fibrillation in the general population. PLoS One 2013; 8:e79109. https://doi.org/ 10.1371/journal.pone.0079109

  12. Gleason KT, Dennison Himmelfarb CR, Ford DE, Lehmann H, Samuel L, Han HR, et al. Association of sex, age and education level with patient reported outcomes in atrial fibrillation. BMC Cardiovasc Disord 2019; 19:85. https://doi.org/10.1186/s12872-0191059-6

  13. Schnabel RB, Pecen L, Rzayeva N, Lucerna M, Purmah Y, Ojeda FM, et al. Symptom burden of atrial fibrillation and its relation to interventions and outcome in Europe. J Am Heart Assoc 2018; 7:e007559. https://doi.org/10.1161/JAHA.117.007559

  14. Wynn GJ, Todd DM, Webber M, Bonnett L, McShane J, Kirchhof P, et al. The European Heart Rhythm Association symptom classification for atrial fibrillation: validation and improvement through a simple modification. Europace 2014; 16:965–72. https://doi. org/10.1093/europace/eut395

  15. Kotecha D, Bunting KV, Gill SK, Mehta S, Stanbury M, Jones JC, et al. Effect of digoxin vs bisoprolol for heart rate control in atrial fibrillation on patient-reported quality of life: the RATE-AF randomized clinical trial. JAMA 2020; 324:2497–508. https://doi.org/10. 1001/jama.2020.23138

  16. Kotecha D, Ahmed A, Calvert M, Lencioni M, Terwee CB, Lane DA. Patient-reported outcomes for quality of life assessment in atrial fibrillation: a systematic review of measurement properties. PLoS One 2016; 11:e0165790. https://doi.org/10.1371/ journal.pone.0165790

  17. Mantovan R, Macle L, De Martino G, Chen J, Morillo CA, Novak P, et al. Relationship of quality of life with procedural success of atrial fibrillation (AF) ablation and postablation AF burden: substudy of the STAR AF randomized trial. Can J Cardiol 2013; 29:1211–7. https://doi.org/10.1016/j.cjca.2013.06.006

  18. Samuel M, Khairy P, Champagne J, Deyell MW, Macle L, Leong-Sit P, et al. Association of atrial fibrillation burden with health-related quality of life after atrial fibrillation ablation: substudy of the cryoballoon vs contact-force atrial fibrillation ablation (CIRCA-DOSE) randomized clinical trial. JAMA Cardiol 2021; 6:1324–8. https://doi. org/10.1001/jamacardio.2021.3063

  19. Sandhu RK, Smigorowsky M, Lockwood E, Savu A, Kaul P, McAlister FA. Impact of electrical cardioversion on quality of life for the treatment of atrial fibrillation. Can J Cardiol 2017; 33:450–5. https://doi.org/10.1016/j.cjca.2016.11.013

  20. Terricabras M, Mantovan R, Jiang CY, Betts TR, Chen J, Deisenhofer I, et al. Association between quality of life and procedural outcome after catheter ablation for atrial fibrillation: a secondary analysis of a randomized clinical trial. JAMA Netw Open 2020; 3: e2025473. https://doi.org/10.1001/jamanetworkopen.2020.25473

  21. Zenger B, Zhang M, Lyons A, Bunch TJ, Fang JC, Freedman RA, et al. Patient-reported outcomes and subsequent management in atrial fibrillation clinical practice: results

from the Utah mEVAL AF program. J Cardiovasc Electrophysiol 2020; 31:3187–95. https://doi.org/10.1111/jce.14795

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  2. Kvist LM, Vinter N, Urbonaviciene G, Lindholt JS, Diederichsen ACP, Frost L. Diagnostic accuracies of screening for atrial fibrillation by cardiac nurses versus radiographers. Open Heart 2019; 6:e000942. https://doi.org/10.1136/openhrt-2018-000942

  3. Hijazi Z, Oldgren J, Siegbahn A, Granger CB, Wallentin L. Biomarkers in atrial fibrillation: a clinical review. Eur Heart J 2013; 34:1475–80. https://doi.org/10.1093/eurheartj/ eht024

  4. Berg DD, Ruff CT, Morrow DA. Biomarkers for risk assessment in atrial fibrillation. Clin Chem 2021; 67:87–95. https://doi.org/10.1093/clinchem/hvaa298

  5. Tops LF, Schalij MJ, Bax JJ. Imaging and atrial fibrillation: the role of multimodality imaging in patient evaluation and management of atrial fibrillation. Eur Heart J 2010; 31: 542–51. https://doi.org/10.1093/eurheartj/ehq005

  6. Obeng-Gyimah E, Nazarian S. Advancements in imaging for atrial fibrillation ablation: is there a potential to improve procedural outcomes? J Innov Card Rhythm Manag 2020; 11:4172–8. https://doi.org/10.19102/icrm.2020.110701

  7. Romero J, Husain SA, Kelesidis I, Sanz J, Medina HM, Garcia MJ. Detection of left atrial appendage thrombus by cardiac computed tomography in patients with atrial fibrillation: a meta-analysis. Circ Cardiovasc Imaging 2013; 6:185–94. https://doi.org/10.1161/ CIRCIMAGING.112.000153

  8. Bisbal F, Benito E, Teis A, Alarcón F, Sarrias A, Caixal G, et al. Magnetic resonance imaging-guided fibrosis ablation for the treatment of atrial fibrillation: the ALICIA trial. Circ Arrhythm Electrophysiol 2020; 13:e008707. https://doi.org/10.1161/CIRCEP.120. 008707

  9. Khurram IM, Habibi M, Gucuk Ipek E, Chrispin J, Yang E, Fukumoto K, et al. Left atrial LGE and arrhythmia recurrence following pulmonary vein isolation for paroxysmal and persistent AF. JACC Cardiovasc Imaging 2016; 9:142–8. https://doi.org/10.1016/j.jcmg. 2015.10.015

  10. Marrouche NF, Wilber D, Hindricks G, Jais P, Akoum N, Marchlinski F, et al. Association of atrial tissue fibrosis identified by delayed enhancement MRI and atrial fibrillation catheter ablation: the DECAAF study. JAMA 2014; 311:498–506. https:// doi.org/10.1001/jama.2014.3

  11. Roney CH, Sillett C, Whitaker J, Lemus JAS, Sim I, Kotadia I, et al. Applications of multimodality imaging for left atrial catheter ablation. Eur Heart J Cardiovasc Imaging 2021; 23:31–41. https://doi.org/10.1093/ehjci/jeab205

  12. Potter A, Augustine DX, Ingram TE. Referring for echocardiography: when not to test. Br J Gen Pract 2021; 71:333–4. https://doi.org/10.3399/bjgp21X716441

  13. Troughton RW, Asher CR, Klein AL. The role of echocardiography in atrial fibrillation and cardioversion. Heart 2003; 89:1447–54. https://doi.org/10.1136/heart.89.12.1447

  14. Odutayo A, Wong CX, Hsiao AJ, Hopewell S, Altman DG, Emdin CA. Atrial fibrillation and risks of cardiovascular disease, renal disease, and death: systematic review and meta-analysis. BMJ 2016; 354:i4482. https://doi.org/10.1136/bmj.i4482

  15. Ruddox V, Sandven I, Munkhaugen J, Skattebu J, Edvardsen T, Otterstad JE. Atrial fibrillation and the risk for myocardial infarction, all-cause mortality and heart failure: a systematic review and meta-analysis. Eur J Prev Cardiol 2017; 24:1555–66. https://doi. org/10.1177/2047487317715769

  16. Bassand JP, Accetta G, Al Mahmeed W, Corbalan R, Eikelboom J, Fitzmaurice DA, et al. Risk factors for death, stroke, and bleeding in 28,628 patients from the GARFIELD-AF registry: rationale for comprehensive management of atrial fibrillation. PLoS One 2018; 13:e0191592. https://doi.org/10.1371/journal.pone.0191592

  17. Bassand JP, Accetta G, Camm AJ, Cools F, Fitzmaurice DA, Fox KA, et al. Two-year outcomes of patients with newly diagnosed atrial fibrillation: results from GARFIELD-AF. Eur Heart J 2016; 37:2882–9. https://doi.org/10.1093/eurheartj/ ehw233

  18. Hornestam B, Adiels M, Wai Giang K, Hansson PO, Björck L, Rosengren A. Atrial fibrillation and risk of venous thromboembolism: a Swedish nationwide registry study. Europace 2021; 23:1913–21. https://doi.org/10.1093/europace/euab180

  19. Lutsey PL, Norby FL, Alonso A, Cushman M, Chen LY, Michos ED, et al. Atrial fibrillation and venous thromboembolism: evidence of bidirectionality in the atherosclerosis risk in communities study. J Thromb Haemost 2018; 16:670–9. https://doi.org/10. 1111/jth.13974

  20. Koh YH, Lew LZW, Franke KB, Elliott AD, Lau DH, Thiyagarajah A, et al. Predictive role of atrial fibrillation in cognitive decline: a systematic review and meta-analysis of 2.8 million individuals. Europace 2022; 24:1229–39. https://doi.org/10.1093/europace/ euac003

  21. Papanastasiou CA, Theochari CA, Zareifopoulos N, Arfaras-Melainis A, Giannakoulas G, Karamitsos TD, et al. Atrial fibrillation is associated with cognitive impairment, allcause dementia, vascular dementia, and Alzheimer’s disease: a systematic review and meta-analysis. J Gen Intern Med 2021; 36:3122–35. https://doi.org/10.1007/s11606021-06954-8

  22. Giannone ME, Filippini T, Whelton PK, Chiari A, Vitolo M, Boriani G, et al. Atrial fibrillation and the risk of early-onset dementia: a systematic review and meta-analysis. J Am Heart Assoc 2022; 11:e025653. https://doi.org/10.1161/JAHA.122.025653

ESC Guidelines

  1. Zuin M, Roncon L, Passaro A, Bosi C, Cervellati C, Zuliani G. Risk of dementia in patients with atrial fibrillation: short versus long follow-up. A systematic review and meta-analysis. Int J Geriatr Psychiatry 2021; 36:1488–500. https://doi.org/10.1002/gps. 5582

  2. Mobley AR, Subramanian A, Champsi A, Wang X, Myles P, McGreavy P, et al. Thromboembolic events and vascular dementia in patients with atrial fibrillation and low apparent stroke risk. Nat Med 2024. https://doi.org/10.1038/s41591-02403049-9.

  3. Wijtvliet E, Tieleman RG, van Gelder IC, Pluymaekers N, Rienstra M, Folkeringa RJ, et al. Nurse-led vs. usual-care for atrial fibrillation. Eur Heart J 2020; 41:634–41. https://doi.org/10.1093/eurheartj/ehz666

  4. Wong CX, Brooks AG, Lau DH, Leong DP, Sun MT, Sullivan T, et al. Factors associated with the epidemic of hospitalizations due to atrial fibrillation. Am J Cardiol 2012; 110: 1496–9. https://doi.org/10.1016/j.amjcard.2012.07.011

  5. Dai H, Zhang Q, Much AA, Maor E, Segev A, Beinart R, et al. Global, regional, and national prevalence, incidence, mortality, and risk factors for atrial fibrillation, 1990– 2017: results from the Global Burden of Disease Study 2017. Eur Heart J Qual Care Clin Outcomes 2021; 7:574–82. https://doi.org/10.1093/ehjqcco/qcaa061

  6. Țica O, Țica O, Bunting KV, deBono J, Gkoutos GV, Popescu MI, et al. Post-mortem examination of high mortality in patients with heart failure and atrial fibrillation. BMC Med 2022; 20:331. https://doi.org/10.1186/s12916-022-02533-8

  7. Bassand JP, Virdone S, Badoz M, Verheugt FWA, Camm AJ, Cools F, et al. Bleeding and related mortality with NOACs and VKAs in newly diagnosed atrial fibrillation: results from the GARFIELD-AF registry. Blood Adv 2021; 5:1081–91. https://doi.org/10.1182/ bloodadvances.2020003560

  8. Pokorney SD, Piccini JP, Stevens SR, Patel MR, Pieper KS, Halperin JL, et al. Cause of death and predictors of all-cause mortality in anticoagulated patients with nonvalvular atrial fibrillation: data from ROCKET AF. J Am Heart Assoc 2016; 5:e002197. https://doi. org/10.1161/JAHA.115.002197

  9. Granada J, Uribe W, Chyou PH, Maassen K, Vierkant R, Smith PN, et al. Incidence and predictors of atrial flutter in the general population. J Am Coll Cardiol 2000; 36:2242–6. https://doi.org/10.1016/S0735-1097(00)00982-7

  10. Vadmann H, Nielsen PB, Hjortshoj SP, Riahi S, Rasmussen LH, Lip GY, et al. Atrial flutter and thromboembolic risk: a systematic review. Heart 2015; 101:1446–55. https:// doi.org/10.1136/heartjnl-2015-307550

  11. Lelorier P, Humphries KH, Krahn A, Connolly SJ, Talajic M, Green M, et al. Prognostic differences between atrial fibrillation and atrial flutter. Am J Cardiol 2004; 93:647–9. https://doi.org/10.1016/j.amjcard.2003.11.042

  12. Biblo LA, Yuan Z, Quan KJ, Mackall JA, Rimm AA. Risk of stroke in patients with atrial flutter. Am J Cardiol 2001; 87:346–9, A9. https://doi.org/10.1016/S0002-9149(00) 01374-6

  13. Corrado G, Sgalambro A, Mantero A, Gentile F, Gasparini M, Bufalino R, et al. Thromboembolic risk in atrial flutter. The FLASIEC (FLutter Atriale Società Italiana di Ecografia Cardiovascolare) multicentre study. Eur Heart J 2001; 22:1042–51. https://doi.org/10.1053/euhj.2000.2427

  14. Lin YS, Chen TH, Chi CC, Lin MS, Tung TH, Liu CH, et al. Different implications of heart failure, ischemic stroke, and mortality between nonvalvular atrial fibrillation and atrial flutter–a view from a national cohort study. J Am Heart Assoc 2017; 6: e006406. https://doi.org/10.1161/JAHA.117.006406

  15. Giehm-Reese M, Johansen MN, Kronborg MB, Jensen HK, Gerdes C, Kristensen J, et al. Discontinuation of oral anticoagulation and risk of stroke and death after ablation for typical atrial flutter: a nation-wide Danish cohort study. Int J Cardiol 2021; 333:110–6. https://doi.org/10.1016/j.ijcard.2021.02.057

  16. Gallagher C, Rowett D, Nyfort-Hansen K, Simmons S, Brooks AG, Moss JR, et al. Patient-centered educational resources for atrial fibrillation. JACC Clin Electrophysiol 2019; 5:1101–14. https://doi.org/10.1016/j.jacep.2019.08.007

  17. Chung MK, Fagerlin A, Wang PJ, Ajayi TB, Allen LA, Baykaner T, et al. Shared decision making in cardiac electrophysiology procedures and arrhythmia management. Circ Arrhythm Electrophysiol 2021; 14:e007958. https://doi.org/10.1161/CIRCEP.121. 007958

  18. Wang PJ, Lu Y, Mahaffey KW, Lin A, Morin DP, Sears SF, et al. A randomized clinical trial to evaluate an atrial fibrillation stroke prevention shared decision-making pathway. J Am Heart Assoc 2022; 12:e028562. https://doi.org/10.1161/JAHA.122.028562

  19. Seaburg L, Hess EP, Coylewright M, Ting HH, McLeod CJ, Montori VM. Shared decision making in atrial fibrillation: where we are and where we should be going. Circulation 2014; 129:704–10. https://doi.org/10.1161/CIRCULATIONAHA.113. 004498

  20. Zhang J, Lenarczyk R, Marin F, Malaczynska-Rajpold K, Kosiuk J, Doehner W, et al. The interpretation of CHA2DS2-VASc score components in clinical practice: a joint survey by the European Heart Rhythm Association (EHRA) scientific initiatives committee, the EHRA young electrophysiologists, the Association of Cardiovascular Nursing and Allied Professionals, and the European Society of Cardiology council on stroke. Europace 2021; 23:314–22. https://doi.org/10.1093/europace/euaa358

  21. Omoush A, Aloush S, Albashtawy M, Rayan A, Alkhawaldeh A, Eshah N, et al. Nurses knowledge of anticoagulation therapy for atrial fibrillation patients: effectiveness of an educational course. Nurs Forum 2022; 57:825–32. https://doi.org/10.1111/nuf.12770

  22. Heidbuchel H, Dagres N, Antz M, Kuck KH, Lazure P, Murray S, et al. Major knowledge gaps and system barriers to guideline implementation among European physicians treating patients with atrial fibrillation: a European Society of Cardiology international educational needs assessment. Europace 2018; 20:1919–28. https://doi.org/10.1093/ europace/euy039

  23. Bunting KV, Van Gelder IC, Kotecha D. STEEER-AF: a cluster-randomized education trial from the ESC. Eur Heart J 2020; 41:1952–4. https://doi.org/10.1093/eurheartj/ ehaa421

  24. Tanner FC, Brooks N, Fox KF, Gonçalves L, Kearney P, Michalis L, et al. ESC core curriculum for the cardiologist. Eur Heart J 2020; 41:3605–92. https://doi.org/10.1093/ eurheartj/ehaa641

  25. Astin F, Carroll D, De Geest S, Fernandez-Oliver AL, Holt J, Hinterbuchner L, et al. A core curriculum for the continuing professional development of nurses working in cardiovascular settings: developed by the education committee of the Council on Cardiovascular Nursing and Allied Professions (CCNAP) on behalf of the European Society of Cardiology. Eur J Cardiovasc Nurs 2015; 14:S1–17. https://doi.org/10.1177/ 1474515115580905

  26. Sterlinski M, Bunting KV, Boriani G, Boveda S, Guasch E, Mont L, et al. STEEER-AF Trial Team. Design and deployment of the STEEER-AF trial to evaluate and improve guideline adherence: a cluster-randomised trial by the European Society of Cardiology and European Heart Rhythm Association. Europace 2024:euae178. https://doi.org/ 10.1093/europace/euae178

  27. Vinereanu D, Lopes RD, Bahit MC, Xavier D, Jiang J, Al-Khalidi HR, et al. A multifaceted intervention to improve treatment with oral anticoagulants in atrial fibrillation (IMPACT-AF): an international, cluster-randomised trial. Lancet 2017; 390:1737–46. https://doi.org/10.1016/S0140-6736(17)32165-7

  28. Franchi C, Antoniazzi S, Ardoino I, Proietti M, Marcucci M, Santalucia P, et al. Simulation-based education for physicians to increase oral anticoagulants in hospitalized elderly patients with atrial fibrillation. Am J Med 2019; 132:e634–47. https://doi. org/10.1016/j.amjmed.2019.03.052

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  30. Ono F, Akiyama S, Suzuki A, Ikeda Y, Takahashi A, Matsuoka H, et al. Impact of care coordination on oral anticoagulant therapy among patients with atrial fibrillation in routine clinical practice in Japan: a prospective, observational study. BMC Cardiovasc Disord 2019; 19:235. https://doi.org/10.1186/s12872-019-1216-y

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ESC Guidelines 3387

  1. Biersteker TE, Schalij MJ, Treskes RW. Impact of mobile health devices for the detection of atrial fibrillation: systematic review. JMIR Mhealth Uhealth 2021; 9:e26161. https://doi.org/10.2196/26161

  2. Romiti GF, Pastori D, Rivera-Caravaca JM, Ding WY, Gue YX, Menichelli D, et al. Adherence to the ‘atrial fibrillation better care’ pathway in patients with atrial fibrillation: impact on clinical outcomes—a systematic review and meta-analysis of 285,000 patients. Thromb Haemost 2022; 122:406–14. https://doi.org/10.1055/a-1515-9630

  3. Gallagher C, Elliott AD, Wong CX, Rangnekar G, Middeldorp ME, Mahajan R, et al. Integrated care in atrial fibrillation: a systematic review and meta-analysis. Heart 2017; 103:1947–53. https://doi.org/10.1136/heartjnl-2016-310952

  4. Kirchhof P, Benussi S, Kotecha D, Ahlsson A, Atar D, Casadei B, et al. 2016 ESC Guidelines for the management of atrial fibrillation developed in collaboration with EACTS. Eur Heart J 2016; 37:2893–962. https://doi.org/10.1093/eurheartj/ehw210

  5. Hindricks G, Potpara T, Dagres N, Arbelo E, Bax JJ, Blomström-Lundqvist C, et al. 2020 ESC Guidelines for the diagnosis and management of atrial fibrillation developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS): the task force for the diagnosis and management of atrial fibrillation of the European Society of Cardiology (ESC) developed with the special contribution of the European Heart Rhythm Association (EHRA) of the ESC. Eur Heart J 2021; 42: 373–498. https://doi.org/10.1093/eurheartj/ehaa612

  6. Qvist I, Hendriks JM, Møller DS, Albertsen AE, Mogensen HM, Oddershede GD, et al. Effectiveness of structured, hospital-based, nurse-led atrial fibrillation clinics: a comparison between a real-world population and a clinical trial population. Open Heart 2016; 3:e000335. https://doi.org/10.1136/openhrt-2015-000335

  7. Hendriks JM, de Wit R, Crijns HJ, Vrijhoef HJ, Prins MH, Pisters R, et al. Nurse-led care vs. usual care for patients with atrial fibrillation: results of a randomized trial of integrated chronic care vs. routine clinical care in ambulatory patients with atrial fibrillation. Eur Heart J 2012; 33:2692–9. https://doi.org/10.1093/eurheartj/ehs071

  8. Carter L, Gardner M, Magee K, Fearon A, Morgulis I, Doucette S, et al. An integrated management approach to atrial fibrillation. J Am Heart Assoc 2016; 5:e002950. https:// doi.org/10.1161/JAHA.115.002950

  9. van den Dries CJ, van Doorn S, Rutten FH, Oudega R, van de Leur S, Elvan A, et al. Integrated management of atrial fibrillation in primary care: results of the ALL-IN cluster randomized trial. Eur Heart J 2020; 41:2836–44. https://doi.org/10.1093/eurheartj/ ehaa055

  10. Abed HS, Wittert GA, Leong DP, Shirazi MG, Bahrami B, Middeldorp ME, et al. Effect of weight reduction and cardiometabolic risk factor management on symptom burden and severity in patients with atrial fibrillation: a randomized clinical trial. JAMA 2013; 310:2050–60. https://doi.org/10.1001/jama.2013.280521

  11. Pathak RK, Middeldorp ME, Meredith M, Mehta AB, Mahajan R, Wong CX, et al. Long-term effect of goal-directed weight management in an atrial fibrillation cohort: a long-term follow-up study (LEGACY). J Am Coll Cardiol 2015; 65:2159–69. https:// doi.org/10.1016/j.jacc.2015.03.002

  12. Middeldorp ME, Pathak RK, Meredith M, Mehta AB, Elliott AD, Mahajan R, et al. PREVEntion and regReSsive effect of weight-loss and risk factor modification on atrial fibrillation: the REVERSE-AF study. Europace 2018; 20:1929–35. https://doi.org/10. 1093/europace/euy117

  13. Pathak RK, Middeldorp ME, Lau DH, Mehta AB, Mahajan R, Twomey D, et al. Aggressive risk factor reduction study for atrial fibrillation and implications for the outcome of ablation: the ARREST-AF cohort study. J Am Coll Cardiol 2014; 64:2222–31. https://doi.org/10.1016/j.jacc.2014.09.028

  14. Pinho-Gomes AC, Azevedo L, Copland E, Canoy D, Nazarzadeh M, Ramakrishnan R, et al. Blood pressure-lowering treatment for the prevention of cardiovascular events in patients with atrial fibrillation: an individual participant data meta-analysis. PLoS Med 2021; 18:e1003599. https://doi.org/10.1371/journal.pmed.1003599

  15. Parkash R, Wells GA, Sapp JL, Healey JS, Tardif J-C, Greiss I, et al. Effect of aggressive blood pressure control on the recurrence of atrial fibrillation after catheter ablation: a randomized, open-label clinical trial (SMAC-AF [Substrate Modification with Aggressive Blood Pressure Control]). Circulation 2017; 135:1788–98. https://doi.org/ 10.1161/CIRCULATIONAHA.116.026230

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ESC Guidelines

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  41. Proietti M, Romiti GF, Basili S. The case of diabetes mellitus and atrial fibrillation: underlining the importance of non-cardiovascular comorbidities. Eur J Intern Med 2022; 103:38–40. https://doi.org/10.1016/j.ejim.2022.06.017

ESC Guidelines 3389

  1. Karayiannides S, Norhammar A, Landstedt-Hallin L, Friberg L, Lundman P. Prognostic impact of type 1 and type 2 diabetes mellitus in atrial fibrillation and the effect of severe hypoglycaemia: a nationwide cohort study. Eur J Prev Cardiol 2022; 29:1759–69. https:// doi.org/10.1093/eurjpc/zwac093

  2. Lip GY, Nieuwlaat R, Pisters R, Lane DA, Crijns HJ. Refining clinical risk stratification for predicting stroke and thromboembolism in atrial fibrillation using a novel risk factor-based approach: the Euro Heart Survey on atrial fibrillation. Chest 2010; 137: 263–72. https://doi.org/10.1378/chest.09-1584

  3. Abdel-Qadir H, Gunn M, Lega IC, Pang A, Austin PC, Singh SM, et al. Association of diabetes duration and glycemic control with stroke rate in patients with atrial fibrillation and diabetes: a population-based cohort study. J Am Heart Assoc 2022; 11: e023643. https://doi.org/10.1161/JAHA.121.023643

  4. Donnellan E, Aagaard P, Kanj M, Jaber W, Elshazly M, Hoosien M, et al. Association between pre-ablation glycemic control and outcomes among patients with diabetes undergoing atrial fibrillation ablation. JACC Clin Electrophysiol 2019; 5:897–903. https:// doi.org/10.1016/j.jacep.2019.05.018

  5. D’Souza S, Elshazly MB, Dargham SR, Donnellan E, Asaad N, Hayat S, et al. Atrial fibrillation catheter ablation complications in obese and diabetic patients: insights from the US nationwide inpatient sample 2005–2013. Clin Cardiol 2021; 44:1151–60. https://doi.org/10.1002/clc.23667

  6. Creta A, Providencia R, Adragao P, de Asmundis C, Chun J, Chierchia G, et al. Impact of type-2 diabetes mellitus on the outcomes of catheter ablation of atrial fibrillation (European Observational Multicentre Study). Am J Cardiol 2020; 125:901–6. https:// doi.org/10.1016/j.amjcard.2019.12.037

  7. Wang Z, Wang YJ, Liu ZY, Li Q, Kong YW, Chen YW, et al. Effect of insulin resistance on recurrence after radiofrequency catheter ablation in patients with atrial fibrillation. Cardiovasc Drugs Ther 2023; 37:705–13. https://doi.org/10.1007/s10557-022-07317-z

  8. Papazoglou AS, Kartas A, Moysidis DV, Tsagkaris C, Papadakos SP, Bekiaridou A, et al. Glycemic control and atrial fibrillation: an intricate relationship, yet under investigation. Cardiovasc Diabetol 2022; 21:39. https://doi.org/10.1186/s12933-022-01473-0

  9. Zhang Z, Zhang X, Korantzopoulos P, Letsas KP, Tse G, Gong M, et al. Thiazolidinedione use and atrial fibrillation in diabetic patients: a meta-analysis. BMC Cardiovasc Disord 2017; 17:96. https://doi.org/10.1186/s12872-017-0531-4

  10. Bell DSH, Goncalves E. Atrial fibrillation and type 2 diabetes: prevalence, etiology, pathophysiology and effect of anti-diabetic therapies. Diabetes Obes Metab 2019; 21: 210–7. https://doi.org/10.1111/dom.13512

  11. Marx N, Federici M, Schütt K, Müller-Wieland D, Ajjan RA, Antunes MJ, et al. 2023 ESC Guidelines for the management of cardiovascular disease in patients with diabetes. Eur Heart J 2023; 44:4043–140. https://doi.org/10.1093/eurheartj/ehad192

  12. Di Benedetto L, Michels G, Luben R, Khaw KT, Pfister R. Individual and combined impact of lifestyle factors on atrial fibrillation in apparently healthy men and women: the EPIC-Norfolk prospective population study. Eur J Prev Cardiol 2018; 25:1374–83. https://doi.org/10.1177/2047487318782379

  13. Grundvold I, Bodegard J, Nilsson PM, Svennblad B, Johansson G, Ostgren CJ, et al. Body weight and risk of atrial fibrillation in 7,169 patients with newly diagnosed type 2 diabetes; an observational study. Cardiovasc Diabetol 2015; 14:5. https://doi.org/10.1186/ s12933-014-0170-3

  14. Wong CX, Sullivan T, Sun MT, Mahajan R, Pathak RK, Middeldorp M, et al. Obesity and the risk of incident, post-operative, and post-ablation atrial fibrillation: a meta-analysis of 626,603 individuals in 51 studies. JACC Clin Electrophysiol 2015; 1:139–52. https://doi. org/10.1016/j.jacep.2015.04.004

  15. Providencia R, Adragao P, de Asmundis C, Chun J, Chierchia G, Defaye P, et al. Impact of body mass index on the outcomes of catheter ablation of atrial fibrillation: a European observational multicenter study. J Am Heart Assoc 2019; 8:e012253. https:// doi.org/10.1161/JAHA.119.012253

  16. Glover BM, Hong KL, Dagres N, Arbelo E, Laroche C, Riahi S, et al. Impact of body mass index on the outcome of catheter ablation of atrial fibrillation. Heart 2019; 105:244–50. https://doi.org/10.1136/heartjnl-2018-313490

  17. Gessler N, Willems S, Steven D, Aberle J, Akbulak RO, Gosau N, et al. Supervised obesity reduction trial for AF ablation patients: results from the SORT-AF trial. Europace 2021; 23:1548–58. https://doi.org/10.1093/europace/euab122

  18. Mohanty S, Mohanty P, Natale V, Trivedi C, Gianni C, Burkhardt JD, et al. Impact of weight loss on ablation outcome in obese patients with longstanding persistent atrial fibrillation. J Cardiovasc Electrophysiol 2018; 29:246–53. https://doi.org/10.1111/jce. 13394

  19. Donnellan E, Wazni OM, Kanj M, Elshazly M, Hussein AA, Patel DR, et al. Impact of risk-factor modification on arrhythmia recurrence among morbidly obese patients undergoing atrial fibrillation ablation. J Cardiovasc Electrophysiol 2020; 31:1979–86. https://doi.org/10.1111/jce.14607

  20. Donnellan E, Wazni OM, Kanj M, Baranowski B, Cremer P, Harb S, et al. Association between pre-ablation bariatric surgery and atrial fibrillation recurrence in morbidly obese patients undergoing atrial fibrillation ablation. Europace 2019; 21:1476–83. https:// doi.org/10.1093/europace/euz183

  21. Donnellan E, Wazni O, Kanj M, Hussein A, Baranowski B, Lindsay B, et al. Outcomes of atrial fibrillation ablation in morbidly obese patients following bariatric surgery

compared with a nonobese cohort. Circ Arrhythm Electrophysiol 2019; 12:e007598. https://doi.org/10.1161/CIRCEP.119.007598

  1. Moula AI, Parrini I, Tetta C, Lucà F, Parise G, Rao CM, et al. Obstructive sleep apnea and atrial fibrillation. J Clin Med 2022; 11:1242. https://doi.org/10.3390/jcm11051242

  2. Kapur VK, Auckley DH, Chowdhuri S, Kuhlmann DC, Mehra R, Ramar K, et al. Clinical practice guideline for diagnostic testing for adult obstructive sleep apnea: an American academy of sleep medicine clinical practice guideline. J Clin Sleep Med 2017; 13 479–504. https://doi.org/10.5664/jcsm.6506

  3. Linz D, Brooks AG, Elliott AD, Nalliah CJ, Hendriks JML, Middeldorp ME, et al. Variability of sleep apnea severity and risk of atrial fibrillation: the VARIOSA-AF study. JACC Clin Electrophysiol 2019; 5:692–701. https://doi.org/10.1016/j.jacep.2019.03.005

  4. Linz D, Linz B, Dobrev D, Baumert M, Hendriks JM, Pepin JL, et al. Personalized management of sleep apnea in patients with atrial fibrillation: an interdisciplinary and translational challenge. Int J Cardiol Heart Vasc 2021; 35:100843. https://doi.org/10.1016/j. ijcha.2021.100843.

  5. Kanagala R, Murali NS, Friedman PA, Ammash NM, Gersh BJ, Ballman KV, et al. Obstructive sleep apnea and the recurrence of atrial fibrillation. Circulation 2003; 107:2589–94. https://doi.org/10.1161/01.CIR.0000068337.25994.21

  6. Abumuamar AM, Newman D, Dorian P, Shapiro CM. Cardiac effects of CPAP treatment in patients with obstructive sleep apnea and atrial fibrillation. J Interv Card Electrophysiol 2019; 54:289–97. https://doi.org/10.1007/s10840-018-0482-4

  7. Mittal S, Golombeck D, Pimienta J. Sleep apnoea and AF: where do we stand? Practical advice for clinicians. Arrhythm Electrophysiol Rev 2021; 10:140–6. https://doi.org/10. 15420/aer.2021.05

  8. Hunt TE, Traaen GM, Aakeroy L, Bendz C, Overland B, Akre H, et al. Effect of continuous positive airway pressure therapy on recurrence of atrial fibrillation after pulmonary vein isolation in patients with obstructive sleep apnea: a randomized controlled trial. Heart Rhythm 2022; 19:1433–41. https://doi.org/10.1016/j.hrthm.2022.06.016

  9. Caples SM, Mansukhani MP, Friedman PA, Somers VK. The impact of continuous positive airway pressure treatment on the recurrence of atrial fibrillation post cardioversion: a randomized controlled trial. Int J Cardiol 2019; 278:133–6. https://doi.org/10. 1016/j.ijcard.2018.11.100

  10. Labarca G, Dreyse J, Drake L, Jorquera J, Barbe F. Efficacy of continuous positive airway pressure (CPAP) in the prevention of cardiovascular events in patients with obstructive sleep apnea: systematic review and meta-analysis. Sleep Med Rev 2020; 52:101312. https://doi.org/10.1016/j.smrv.2020.101312

  11. Abuzaid AS, Al Ashry HS, Elbadawi A, Ld H, Saad M, Elgendy IY, et al. Meta-analysis of cardiovascular outcomes with continuous positive airway pressure therapy in patients with obstructive sleep apnea. Am J Cardiol 2017; 120:693–9. https://doi.org/10.1016/j. amjcard.2017.05.042

  12. Yu J, Zhou Z, McEvoy RD, Anderson CS, Rodgers A, Perkovic V, et al. Association of positive airway pressure with cardiovascular events and death in adults with sleep apnea: a systematic review and meta-analysis. JAMA 2017; 318:156–66. https://doi.org/10. 1001/jama.2017.7967

  13. McEvoy RD, Antic NA, Heeley E, Luo Y, Ou Q, Zhang X, et al. CPAP for prevention of cardiovascular events in obstructive sleep apnea. N Engl J Med 2016; 375:919–31. https://doi.org/10.1056/NEJMoa1606599

  14. Overvad TF, Rasmussen LH, Skjøth F, Overvad K, Albertsen IE, Lane DA, et al. Alcohol intake and prognosis of atrial fibrillation. Heart 2013; 99:1093–9. https://doi.org/10. 1136/heartjnl-2013-304036

  15. Lim C, Kim T-H, Yu HT, Lee S-R, Cha M-J, Lee J-M, et al. Effect of alcohol consumption on the risk of adverse events in atrial fibrillation: from the COmparison study of Drugs for symptom control and complication prEvention of Atrial Fibrillation (CODE-AF) registry. EP Europace 2021; 23:548–56. https://doi.org/10.1093/europace/euaa340

  16. Lee SR, Choi EK, Jung JH, Han KD, Oh S, Lip GYH. Lower risk of stroke after alcohol abstinence in patients with incident atrial fibrillation: a nationwide population-based cohort study. Eur Heart J 2021; 42:4759–68. https://doi.org/10.1093/eurheartj/ehab315

  17. Pisters R, Lane DA, Nieuwlaat R, de Vos CB, Crijns HJ, Lip GY. A novel user-friendly score (HAS-BLED) to assess 1-year risk of major bleeding in patients with atrial fibrillation: the Euro Heart Survey. Chest 2010; 138:1093–100. https://doi.org/10.1378/ chest.10-0134

  18. Takahashi Y, Nitta J, Kobori A, Sakamoto Y, Nagata Y, Tanimoto K, et al. Alcohol consumption reduction and clinical outcomes of catheter ablation for atrial fibrillation. Circ Arrhythm Electrophysiol 2021; 14:e009770. https://doi.org/10.1161/CIRCEP.121. 009770

  19. Friberg L, Hammar N, Rosenqvist M. Stroke in paroxysmal atrial fibrillation: report from the Stockholm cohort of atrial fibrillation. Eur Heart J 2010; 31:967–75. https:// doi.org/10.1093/eurheartj/ehn599

  20. Banerjee A, Taillandier S, Olesen JB, Lane DA, Lallemand B, Lip GY, et al. Pattern of atrial fibrillation and risk of outcomes: the Loire valley atrial fibrillation project. Int J Cardiol 2013; 167:2682–7. https://doi.org/10.1016/j.ijcard.2012.06.118

  21. Wolf PA, Abbott RD, Kannel WB. Atrial fibrillation as an independent risk factor for stroke: the Framingham study. Stroke 1991; 22:983–8. https://doi.org/10.1161/01.STR. 22.8.983

ESC Guidelines

  1. Hart RG, Pearce LA, Aguilar MI. Meta-analysis: antithrombotic therapy to prevent stroke in patients who have nonvalvular atrial fibrillation. Ann Intern Med 2007; 146: 857–67. https://doi.org/10.7326/0003-4819-146-12-200706190-00007

  2. Ruff CT, Giugliano RP, Braunwald E, Hoffman EB, Deenadayalu N, Ezekowitz MD, et al. Comparison of the efficacy and safety of new oral anticoagulants with warfarin in patients with atrial fibrillation: a meta-analysis of randomised trials. Lancet 2014; 383: 955–62. https://doi.org/10.1016/S0140-6736(13)62343-0

  3. Sjalander S, Sjalander A, Svensson PJ, Friberg L. Atrial fibrillation patients do not benefit from acetylsalicylic acid. Europace 2014; 16:631–8. https://doi.org/10.1093/europace/ eut333

  4. Connolly SJ, Eikelboom J, Joyner C, Diener HC, Hart R, Golitsyn S, et al. Apixaban in patients with atrial fibrillation. N Engl J Med 2011; 364:806–17. https://doi.org/10.1056/ NEJMoa1007432

  5. van Doorn S, Rutten FH, O’Flynn CM, Oudega R, Hoes AW, Moons KGM, et al. Effectiveness of CHA2DS2-VASc based decision support on stroke prevention in atrial fibrillation: a cluster randomised trial in general practice. Int J Cardiol 2018; 273:123–9. https://doi.org/10.1016/j.ijcard.2018.08.096

  6. Borre ED, Goode A, Raitz G, Shah B, Lowenstern A, Chatterjee R, et al. Predicting thromboembolic and bleeding event risk in patients with non-valvular atrial fibrillation: a systematic review. Thromb Haemost 2018; 118:2171–87. https://doi.org/10.1055/s0038-1675400

  7. van der Endt VHW, Milders J, de Vries BBLP, Trines SA, Groenwold RHH, Dekkers OM, et al. Comprehensive comparison of stroke risk score performance: a systematic review and meta-analysis among 6 267 728 patients with atrial fibrillation. Europace 2022; 24:1739–53. https://doi.org/10.1093/europace/euac096

  8. Quinn GR, Severdija ON, Chang Y, Singer DE. Wide variation in reported rates of stroke across cohorts of patients with atrial fibrillation. Circulation 2017; 135: 208–19. https://doi.org/10.1161/CIRCULATIONAHA.116.024057

  9. Pisters R, Lane DA, Marin F, Camm AJ, Lip GY. Stroke and thromboembolism in atrial fibrillation. Circ J 2012; 76:2289–304. https://doi.org/10.1253/circj.CJ-12-1036

  10. Hohnloser SH, Hijazi Z, Thomas L, Alexander JH, Amerena J, Hanna M, et al. Efficacy of apixaban when compared with warfarin in relation to renal function in patients with atrial fibrillation: insights from the ARISTOTLE trial. Eur Heart J 2012; 33:2821–30. https://doi.org/10.1093/eurheartj/ehs274

  11. Fox KA, Piccini JP, Wojdyla D, Becker RC, Halperin JL, Nessel CC, et al. Prevention of stroke and systemic embolism with rivaroxaban compared with warfarin in patients with non-valvular atrial fibrillation and moderate renal impairment. Eur Heart J 2011; 32:2387–94. https://doi.org/10.1093/eurheartj/ehr342

  12. Yaghi S, Henninger N, Giles JA, Leon Guerrero C, Mistry E, Liberman AL, et al. Ischaemic stroke on anticoagulation therapy and early recurrence in acute cardioembolic stroke: the IAC study. J Neurol Neurosurg Psychiatry 2021; 92:1062–7. https://doi. org/10.1136/jnnp-2021-326166

  13. Ocak G, Khairoun M, Khairoun O, Bos WJW, Fu EL, Cramer MJ, et al. Chronic kidney disease and atrial fibrillation: a dangerous combination. PLoS One 2022; 17:e0266046. https://doi.org/10.1371/journal.pone.0266046

  14. Seiffge DJ, De Marchis GM, Koga M, Paciaroni M, Wilson D, Cappellari M, et al. Ischemic stroke despite oral anticoagulant therapy in patients with atrial fibrillation. Ann Neurol 2020; 87:677–87. https://doi.org/10.1002/ana.25700

  15. Paciaroni M, Agnelli G, Falocci N, Caso V, Becattini C, Marcheselli S, et al. Prognostic value of trans-thoracic echocardiography in patients with acute stroke and atrial fibrillation: findings from the RAF study. J Neurol 2016; 263:231–7. https://doi.org/10.1007/ s00415-015-7957-3

  16. Hijazi Z, Oldgren J, Siegbahn A, Wallentin L. Application of biomarkers for risk stratification in patients with atrial fibrillation. Clin Chem 2017; 63:152–64. https://doi.org/10. 1373/clinchem.2016.255182

  17. Singleton MJ, Yuan Y, Dawood FZ, Howard G, Judd SE, Zakai NA, et al. Multiple blood biomarkers and stroke risk in atrial fibrillation: the REGARDS study. J Am Heart Assoc 2021; 10:e020157. https://doi.org/10.1161/JAHA.120.020157

  18. Wu VC, Wu M, Aboyans V, Chang SH, Chen SW, Chen MC, et al. Female sex as a risk factor for ischaemic stroke varies with age in patients with atrial fibrillation. Heart 2020; 106:534–40. https://doi.org/10.1136/heartjnl-2019-315065

  19. Mikkelsen AP, Lindhardsen J, Lip GY, Gislason GH, Torp-Pedersen C, Olesen JB. Female sex as a risk factor for stroke in atrial fibrillation: a nationwide cohort study. J Thromb Haemost 2012; 10:1745–51. https://doi.org/10.1111/j.1538-7836.2012. 04853.x

  20. Antonenko K, Paciaroni M, Agnelli G, Falocci N, Becattini C, Marcheselli S, et al. Sex-related differences in risk factors, type of treatment received and outcomes in patients with atrial fibrillation and acute stroke: results from the RAF study (early recurrence and cerebral bleeding in patients with acute ischemic stroke and atrial fibrillation). Eur Stroke J 2017; 2:46–53. https://doi.org/10.1177/2396987316679577

  21. Wang X, Mobley AR, Tica O, Okoth K, Ghosh RE, Myles P, et al. Systematic approach to outcome assessment from coded electronic healthcare records in the DaRe2THINK NHS-embedded randomized trial. Eur Heart J - Dig Health 2022; 3: 426–36. https://doi.org/10.1093/ehjdh/ztac046

  22. Rivard L, Khairy P, Talajic M, Tardif JC, Nattel S, Bherer L, et al. Blinded randomized trial of anticoagulation to prevent ischemic stroke and neurocognitive impairment in atrial

  • fibrillation (BRAIN-AF): methods and design. Can J Cardiol 2019; 35:1069–77. https:// doi.org/10.1016/j.cjca.2019.04.022
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  2. Uhm JS, Kim J, Yu HT, Kim TH, Lee SR, Cha MJ, et al. Stroke and systemic embolism in patients with atrial fibrillation and heart failure according to heart failure type. ESC Heart Fail 2021; 8:1582–9. https://doi.org/10.1002/ehf2.13264

  3. McMurray JJ, Ezekowitz JA, Lewis BS, Gersh BJ, van Diepen S, Amerena J, et al. Left ventricular systolic dysfunction, heart failure, and the risk of stroke and systemic embolism in patients with atrial fibrillation: insights from the ARISTOTLE trial. Circ Heart Fail 2013; 6:451–60. https://doi.org/10.1161/CIRCHEARTFAILURE.112.000143

  4. Kim D, Yang PS, Kim TH, Jang E, Shin H, Kim HY, et al. Ideal blood pressure in patients with atrial fibrillation. J Am Coll Cardiol 2018; 72:1233–45. https://doi.org/10.1016/j.jacc. 2018.05.076

  5. Lip GY, Clementy N, Pericart L, Banerjee A, Fauchier L. Stroke and major bleeding risk in elderly patients aged ≥75 years with atrial fibrillation: the Loire valley atrial fibrillation project. Stroke 2015; 46:143–50. https://doi.org/10.1161/STROKEAHA.114. 007199

  6. American Diabetes Association Professional Practice Committee. 2. Classification and diagnosis of diabetes: standards of medical care in diabetes—2022. Diabetes Care 2022; 45:S17–38. https://doi.org/10.2337/dc22-S002

  7. Steensig K, Olesen KKW, Thim T, Nielsen JC, Jensen SE, Jensen LO, et al. Should the presence or extent of coronary artery disease be quantified in the CHA2DS2-VASc score in atrial fibrillation? A report from the western Denmark heart registry. Thromb Haemost 2018; 118:2162–70. https://doi.org/10.1055/s-0038-1675401

  8. Zabalgoitia M, Halperin JL, Pearce LA, Blackshear JL, Asinger RW, Hart RG. Transesophageal echocardiographic correlates of clinical risk of thromboembolism in nonvalvular atrial fibrillation. Stroke prevention in atrial fibrillation III investigators. J Am Coll Cardiol 1998; 31:1622–6. https://doi.org/10.1016/S0735-1097(98)00146-6

  9. Stroke Prevention in Atrial Fibrillation Investigators Committee on Echocardiography. Transesophageal echocardiography in atrial fibrillation: standards for acquisition and interpretation and assessment of interobserver variability. Stroke prevention in atrial fibrillation investigators committee on echocardiography. J Am Soc Echocardiogr 1996; 9:556–66. https://doi.org/10.1016/S0894-7317(96)90127-3

  10. Lozier MR, Sanchez AM, Lee JJ, Donath EM, Font VE, Escolar E. Thromboembolic outcomes of different anticoagulation strategies for patients with atrial fibrillation in the setting of hypertrophic cardiomyopathy: a systematic review. J Atr Fibrillation 2019; 12:2207. https://doi.org/10.4022/jafib.2207

  11. Guttmann OP, Rahman MS, O’Mahony C, Anastasakis A, Elliott PM. Atrial fibrillation and thromboembolism in patients with hypertrophic cardiomyopathy: systematic review. Heart 2014; 100:465–72. https://doi.org/10.1136/heartjnl-2013-304276

  12. Guttmann OP, Pavlou M, O’Mahony C, Monserrat L, Anastasakis A, Rapezzi C, et al. Prediction of thromboembolic risk in patients with hypertrophic cardiomyopathy (HCM risk-CVA). Eur J Heart Fail 2015; 17:837–45. https://doi.org/10.1002/ejhf.316

  13. Vilches S, Fontana M, Gonzalez-Lopez E, Mitrani L, Saturi G, Renju M, et al. Systemic embolism in amyloid transthyretin cardiomyopathy. Eur J Heart Fail 2022; 24: 1387–96. https://doi.org/10.1002/ejhf.2566

  14. Lee SE, Park JK, Uhm JS, Kim JY, Pak HN, Lee MH, et al. Impact of atrial fibrillation on the clinical course of apical hypertrophic cardiomyopathy. Heart 2017; 103:1496–501. https://doi.org/10.1136/heartjnl-2016-310720

  15. Hirota T, Kubo T, Baba Y, Ochi Y, Takahashi A, Yamasaki N, et al. Clinical profile of thromboembolic events in patients with hypertrophic cardiomyopathy in a regional Japanese cohort–results from Kochi RYOMA study. Circ J 2019; 83:1747–54. https:// doi.org/10.1253/circj.CJ-19-0186

  16. Hsu JC, Huang YT, Lin LY. Stroke risk in hypertrophic cardiomyopathy patients with atrial fibrillation: a nationwide database study. Aging (Albany NY) 2020; 12:24219–27. https://doi.org/10.18632/aging.104133

  17. Chao TF, Lip GYH, Liu CJ, Lin YJ, Chang SL, Lo LW, et al. Relationship of aging and incident comorbidities to stroke risk in patients with atrial fibrillation. J Am Coll Cardiol 2018; 71:122–32. https://doi.org/10.1016/j.jacc.2017.10.085

  18. Weijs B, Dudink E, de Vos CB, Limantoro I, Tieleman RG, Pisters R, et al. Idiopathic atrial fibrillation patients rapidly outgrow their low thromboembolic risk: a 10-year follow-up study. Neth Heart J 2019; 27:487–97. https://doi.org/10.1007/s12471-0191272-z

  19. Bezabhe WM, Bereznicki LR, Radford J, Wimmer BC, Salahudeen MS, Garrahy E, et al. Stroke risk reassessment and oral anticoagulant initiation in primary care patients with atrial fibrillation: A ten-year follow-up. Eur J Clin Invest 2021; 51:e13489. https://doi.org/ 10.1111/eci.13489

  20. Fauchier L, Bodin A, Bisson A, Herbert J, Spiesser P, Clementy N, et al. Incident comorbidities, aging and the risk of stroke in 608,108 patients with atrial fibrillation: a nationwide analysis. J Clin Med 2020; 9:1234. https://doi.org/10.3390/jcm9041234

ESC Guidelines 3391

  1. Kirchhof P, Toennis T, Goette A, Camm AJ, Diener HC, Becher N, et al. Anticoagulation with edoxaban in patients with atrial high-rate episodes. N Engl J Med 2023; 389:1167–79. https://doi.org/10.1056/NEJMoa2303062

  2. Healey JS, Lopes RD, Granger CB, Alings M, Rivard L, McIntyre WF, et al. Apixaban for stroke prevention in subclinical atrial fibrillation. N Engl J Med 2024; 390:107–17. https://doi.org/10.1056/NEJMoa2310234

  3. van Walraven C, Hart RG, Singer DE, Laupacis A, Connolly S, Petersen P, et al. Oral anticoagulants vs aspirin in nonvalvular atrial fibrillation: an individual patient meta-analysis. JAMA 2002; 288:2441–8. https://doi.org/10.1001/jama.288.19.2441

  4. Hart RG, Pearce LA, Rothbart RM, McAnulty JH, Asinger RW, Halperin JL. Stroke with intermittent atrial fibrillation: incidence and predictors during aspirin therapy. Stroke prevention in atrial fibrillation investigators. J Am Coll Cardiol 2000; 35:183–7. https:// doi.org/10.1016/S0735-1097(99)00489-1

  5. Nieuwlaat R, Dinh T, Olsson SB, Camm AJ, Capucci A, Tieleman RG, et al. Should we abandon the common practice of withholding oral anticoagulation in paroxysmal atrial fibrillation? Eur Heart J 2008; 29:915–22. https://doi.org/10.1093/eurheartj/ehn101

  6. Ruff CT. AZALEA-TIMI 71 Steering Committee. Abelacimab, a novel factor XI/XIa inhibitor, vs rivaroxaban in patients with atrial fibrillation: primary results of the AZALEA-TIMI 71 randomized trial. Circulation 2024; 148:e282–317. https://doi.org/ 10.1161/CIR.0000000000001200

  7. Piccini JP, Caso V, Connolly SJ, Fox KAA, Oldgren J, Jones WS, et al. Safety of the oral factor XIa inhibitor asundexian compared with apixaban in patients with atrial fibrillation (PACIFIC-AF): a multicentre, randomised, double-blind, double-dummy, dosefinding phase 2 study. Lancet 2022; 399:1383–90. https://doi.org/10.1016/S01406736(22)00456-1

  8. Tan CSS, Lee SWH. Warfarin and food, herbal or dietary supplement interactions: a systematic review. Br J Clin Pharmacol 2021; 87:352–74. https://doi.org/10.1111/bcp. 14404

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ESC Guidelines

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ESC Guidelines 3393

with atrial fibrillation: real-world analyses from The Netherlands, Italy and Germany. Drugs Real World Outcomes 2022; 9:199–209. https://doi.org/10.1007/s40801-02100289-w

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  18. Flores-Umanzor EJ, Cepas-Guillen PL, Arzamendi D, Cruz-Gonzalez I, Regueiro A, Freixa X. Rationale and design of a randomized clinical trial to compare two antithrombotic strategies after left atrial appendage occlusion: double antiplatelet therapy vs. apixaban (ADALA study). J Interv Card Electrophysiol 2020; 59:471–7. https://doi.org/ 10.1007/s10840-020-00884-x

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  24. Price MJ, Valderrabano M, Zimmerman S, Friedman DJ, Kar S, Curtis JP, et al. Periprocedural pericardial effusion complicating transcatheter left atrial appendage occlusion: a report from the NCDR LAAO registry. Circ Cardiovasc Interv 2022; 15: e011718. https://doi.org/10.1161/CIRCINTERVENTIONS.121.011718

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  27. Tzikas A, Shakir S, Gafoor S, Omran H, Berti S, Santoro G, et al. Left atrial appendage occlusion for stroke prevention in atrial fibrillation: multicentre experience with the AMPLATZER cardiac plug. EuroIntervention 2016; 11:1170–9. https://doi.org/10.4244/ EIJY15M01_06

  28. Nazir S, Ahuja KR, Kolte D, Isogai T, Michihata N, Saad AM, et al. Association of hospital procedural volume with outcomes of percutaneous left atrial appendage occlusion. JACC Cardiovasc Interv 2021; 14:554–61. https://doi.org/10.1016/j.jcin.2020.11.029

  29. Freeman JV, Varosy P, Price MJ, Slotwiner D, Kusumoto FM, Rammohan C, et al. The NCDR left atrial appendage occlusion registry. J Am Coll Cardiol 2020; 75:1503–18. https://doi.org/10.1016/j.jacc.2019.12.040

  30. Cruz-Gonzalez I, Korsholm K, Trejo-Velasco B, Thambo JB, Mazzone P, Rioufol G, et al. Procedural and short-term results with the new watchman FLX left atrial appendage occlusion device. JACC Cardiovasc Interv 2020; 13:2732–41. https://doi.org/10.1016/ j.jcin.2020.06.056

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ESC Guidelines

  1. Whitlock RP, Vincent J, Blackall MH, Hirsh J, Fremes S, Novick R, et al. Left atrial appendage occlusion study II (LAAOS II). Can J Cardiol 2013; 29:1443–7. https://doi.org/ 10.1016/j.cjca.2013.06.015

  2. Whitlock RP, Belley-Cote EP, Paparella D, Healey JS, Brady K, Sharma M, et al. Left atrial appendage occlusion during cardiac surgery to prevent stroke. N Engl J Med 2021; 384:2081–91. https://doi.org/10.1056/NEJMoa2101897

  3. Zhang S, Cui Y, Li J, Tian H, Yun Y, Zhou X, et al. Concomitant transcatheter occlusion versus thoracoscopic surgical clipping for left atrial appendage in patients undergoing ablation for atrial fibrillation: a meta-analysis. Front Cardiovasc Med 2022; 9:970847. https://doi.org/10.3389/fcvm.2022.970847

  4. van Laar C, Verberkmoes NJ, van Es HW, Lewalter T, Dunnington G, Stark S, et al. Thoracoscopic left atrial appendage clipping: a multicenter cohort analysis. JACC Clin Electrophysiol 2018; 4:893–901. https://doi.org/10.1016/j.jacep.2018.03.009

  5. Kiviniemi T, Bustamante-Munguira J, Olsson C, Jeppsson A, Halfwerk FR, Hartikainen J, et al. A randomized prospective multicenter trial for stroke prevention by prophylactic surgical closure of the left atrial appendage in patients undergoing bioprosthetic aortic valve surgery–LAA-CLOSURE trial protocol. Am Heart J 2021; 237:127–34. https://doi. org/10.1016/j.ahj.2021.03.014

  6. Cartledge R, Suwalski G, Witkowska A, Gottlieb G, Cioci A, Chidiac G, et al. Standalone epicardial left atrial appendage exclusion for thromboembolism prevention in atrial fibrillation. Interact Cardiovasc Thorac Surg 2022; 34:548–55. https://doi.org/10. 1093/icvts/ivab334

  7. Branzoli S, Guarracini F, Marini M, D’Onghia G, Penzo D, Piffer S, et al. Heart team for left atrial appendage occlusion: a patient-tailored approach. J Clin Med 2022; 11:176. https://doi.org/10.3390/jcm11010176

  8. Toale C, Fitzmaurice GJ, Eaton D, Lyne J, Redmond KC. Outcomes of left atrial appendage occlusion using the AtriClip device: a systematic review. Interact Cardiovasc Thorac Surg 2019; 29:655–62. https://doi.org/10.1093/icvts/ivz156

  9. Caliskan E, Sahin A, Yilmaz M, Seifert B, Hinzpeter R, Alkadhi H, et al. Epicardial left atrial appendage AtriClip occlusion reduces the incidence of stroke in patients with atrial fibrillation undergoing cardiac surgery. Europace 2018; 20:e105–14. https://doi. org/10.1093/europace/eux211

  10. Nso N, Nassar M, Zirkiyeva M, Lakhdar S, Shaukat T, Guzman L, et al. Outcomes of cardiac surgery with left atrial appendage occlusion versus no occlusion, direct oral anticoagulants, and vitamin K antagonists: a systematic review with meta-analysis. Int J Cardiol Heart Vasc 2022; 40:100998. https://doi.org/10.1016/j.ijcha.2022.100998

  11. Ibrahim AM, Tandan N, Koester C, Al-Akchar M, Bhandari B, Botchway A, et al. Meta-analysis evaluating outcomes of surgical left atrial appendage occlusion during cardiac surgery. Am J Cardiol 2019; 124:1218–25. https://doi.org/10.1016/j.amjcard. 2019.07.032

  12. Park-Hansen J, Holme SJV, Irmukhamedov A, Carranza CL, Greve AM, Al-Farra G, et al. Adding left atrial appendage closure to open heart surgery provides protection from ischemic brain injury six years after surgery independently of atrial fibrillation history: the LAACS randomized study. J Cardiothorac Surg 2018; 13:53. https://doi.org/10. 1186/s13019-018-0740-7

  13. Soltesz EG, Dewan KC, Anderson LH, Ferguson MA, Gillinov AM. Improved outcomes in CABG patients with atrial fibrillation associated with surgical left atrial appendage exclusion. J Card Surg 2021; 36:1201–8. https://doi.org/10.1111/jocs.15335

  14. Fu M, Qin Z, Zheng S, Li Y, Yang S, Zhao Y, et al. Thoracoscopic left atrial appendage occlusion for stroke prevention compared with long-term warfarin therapy in patients with nonvalvular atrial fibrillation. Am J Cardiol 2019; 123:50–6. https://doi.org/10.1016/ j.amjcard.2018.09.025

  15. Peterson D, Geison E. Pharmacist interventions to reduce modifiable bleeding risk factors using HAS-BLED in patients taking warfarin. Fed Pract 2017; 34:S16–20.

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  26. Gao X, Cai X, Yang Y, Zhou Y, Zhu W. Diagnostic accuracy of the HAS-BLED bleeding score in VKA- or DOAC-treated patients with atrial fibrillation: a systematic review and meta-analysis. Front Cardiovasc Med 2021; 8:757087. https://doi.org/10.3389/ fcvm.2021.757087

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  28. Caldeira D, Costa J, Fernandes RM, Pinto FJ, Ferreira JJ. Performance of the HAS-BLED high bleeding-risk category, compared to ATRIA and HEMORR2HAGES in patients with atrial fibrillation: a systematic review and meta-analysis. J Interv Card Electrophysiol 2014; 40:277–84. https://doi.org/10.1007/s10840-014-9930-y

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ESC Guidelines 3395

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  4. White HD, Gruber M, Feyzi J, Kaatz S, Tse HF, Husted S, et al. Comparison of outcomes among patients randomized to warfarin therapy according to anticoagulant control: results from SPORTIF III and V. Arch Intern Med 2007; 167:239–45. https:// doi.org/10.1001/archinte.167.3.239

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  6. Olesen JB, Lip GY, Lindhardsen J, Lane DA, Ahlehoff O, Hansen ML, et al. Risks of thromboembolism and bleeding with thromboprophylaxis in patients with atrial fibrillation: a net clinical benefit analysis using a ‘real world’ nationwide cohort study. Thromb Haemost 2011; 106:739–49. https://doi.org/10.1160/TH11-05-0364

  7. Tomaselli GF, Mahaffey KW, Cuker A, Dobesh PP, Doherty JU, Eikelboom JW, et al. 2020 ACC expert consensus decision pathway on management of bleeding in patients on oral anticoagulants: a report of the American College of Cardiology Solution Set Oversight Committee. J Am Coll Cardiol 2020; 76:594–622. https://doi.org/10.1016/j. jacc.2020.04.053

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  9. Douxfils J, Ageno W, Samama CM, Lessire S, Ten Cate H, Verhamme P, et al. Laboratory testing in patients treated with direct oral anticoagulants: a practical guide for clinicians. J Thromb Haemost 2018; 16:209–19. https://doi.org/10.1111/jth.13912

  10. Milling TJ, Jr, Refaai MA, Sarode R, Lewis B, Mangione A, Durn BL, et al. Safety of a fourfactor prothrombin complex concentrate versus plasma for vitamin K antagonist reversal: an integrated analysis of two phase IIIb clinical trials. Acad Emerg Med 2016; 23:466–75. https://doi.org/10.1111/acem.12911

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ESC Guidelines 3397

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ESC Guidelines 3399

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  17. Zhang XD, Gu J, Jiang WF, Zhao L, Zhou L, Wang YL, et al. Optimal rhythm-control strategy for recurrent atrial tachycardia after catheter ablation of persistent atrial fibrillation: a randomized clinical trial. Eur Heart J 2014; 35:1327–34. https://doi.org/10. 1093/eurheartj/ehu017

  18. Zhou L, He L, Wang W, Li C, Li S, Tang R, et al. Effect of repeat catheter ablation vs. antiarrhythmic drug therapy among patients with recurrent atrial tachycardia/atrial fibrillation after atrial fibrillation catheter ablation: data from CHINA-AF registry. Europace 2023; 25:382–9. https://doi.org/10.1093/europace/euac169

  19. Fink T, Metzner A, Willems S, Eckardt L, Ince H, Brachmann J, et al. Procedural success, safety and patients satisfaction after second ablation of atrial fibrillation in the elderly: results from the German ablation registry. Clin Res Cardiol 2019; 108:1354–63. https:// doi.org/10.1007/s00392-019-01471-5

ESC Guidelines

  1. Winkle RA, Mead RH, Engel G, Kong MH, Fleming W, Salcedo J, et al. Impact of obesity on atrial fibrillation ablation: patient characteristics, long-term outcomes, and complications. Heart Rhythm 2017; 14:819–27. https://doi.org/10.1016/j.hrthm.2017.02.023

  2. Sticherling C, Marin F, Birnie D, Boriani G, Calkins H, Dan G-A, et al. Antithrombotic management in patients undergoing electrophysiological procedures: a European Heart Rhythm Association (EHRA) position document endorsed by the ESC Working Group Thrombosis, Heart Rhythm Society (HRS), and Asia Pacific Heart Rhythm Society (APHRS). EP Europace 2015; 17:1197–214. https://doi.org/10.1093/ europace/euv190

  3. Calkins H, Kuck KH, Cappato R, Brugada J, Camm AJ, Chen SA, et al. 2012 HRS/EHRA/ ECAS expert consensus statement on catheter and surgical ablation of atrial fibrillation: recommendations for patient selection, procedural techniques, patient management and follow-up, definitions, endpoints, and research trial design. J Interv Card Electrophysiol 2012; 33:171–257. https://doi.org/10.1007/s10840-012-9672-7

  4. Noubiap JJ, Agbaedeng TA, Ndoadoumgue AL, Nyaga UF, Kengne AP. Atrial thrombus detection on transoesophageal echocardiography in patients with atrial fibrillation undergoing cardioversion or catheter ablation: a pooled analysis of rates and predictors. J Cardiovasc Electrophysiol 2021; 32:2179–88. https://doi.org/10.1111/jce.15082

  5. Lurie A, Wang J, Hinnegan KJ, McIntyre WF, Belley-Côté EP, Amit G, et al. Prevalence of left atrial thrombus in anticoagulated patients with atrial fibrillation. J Am Coll Cardiol 2021; 77:2875–86. https://doi.org/10.1016/j.jacc.2021.04.036

  6. Efremidis M, Bazoukis G, Vlachos K, Prappa E, Megarisiotou A, Dragasis S, et al. Safety of catheter ablation of atrial fibrillation without pre- or peri-procedural imaging for the detection of left atrial thrombus in the era of uninterrupted anticoagulation. J Arrhythm 2021; 37:28–32. https://doi.org/10.1002/joa3.12466

  7. Diab M, Wazni OM, Saliba WI, Tarakji KG, Ballout JA, Hutt E, et al. Ablation of atrial fibrillation without left atrial appendage imaging in patients treated with direct oral anticoagulants. Circ Arrhythm Electrophysiol 2020; 13:e008301. https://doi.org/10.1161/ CIRCEP.119.008301

  8. Patel K, Natale A, Yang R, Trivedi C, Romero J, Briceno D, et al. Is transesophageal echocardiography necessary in patients undergoing ablation of atrial fibrillation on an uninterrupted direct oral anticoagulant regimen? Results from a prospective multicenter registry. Heart Rhythm 2020; 17:2093–9. https://doi.org/10.1016/j.hrthm.2020. 07.017

  9. Mao YJ, Wang H, Huang PF. Meta-analysis of the safety and efficacy of using minimally interrupted novel oral anticoagulants in patients undergoing catheter ablation for atrial fibrillation. J Interv Card Electrophysiol 2021; 60:407–17. https://doi.org/10.1007/s10840020-00754-6

  10. van Vugt SPG, Westra SW, Volleberg R, Hannink G, Nakamura R, de Asmundis C, et al. Meta-analysis of controlled studies on minimally interrupted vs. continuous use of nonvitamin K antagonist oral anticoagulants in catheter ablation for atrial fibrillation. Europace 2021; 23:1961–9. https://doi.org/10.1093/europace/euab175

  11. Ge Z, Faggioni M, Baber U, Sartori S, Sorrentino S, Farhan S, et al. Safety and efficacy of nonvitamin K antagonist oral anticoagulants during catheter ablation of atrial fibrillation: a systematic review and meta-analysis. Cardiovasc Ther 2018; 36:e12457. https:// doi.org/10.1111/1755-5922.12457

  12. Asad ZUA, Akhtar KH, Jafry AH, Khan MH, Khan MS, Munir MB, et al. Uninterrupted versus interrupted direct oral anticoagulation for catheter ablation of atrial fibrillation: a systematic review and meta-analysis. J Cardiovasc Electrophysiol 2021; 32:1995–2004. https://doi.org/10.1111/jce.15043

  13. Mao YJ, Wang H, Huang PF. Peri-procedural novel oral anticoagulants dosing strategy during atrial fibrillation ablation: a meta-analysis. Pacing Clin Electrophysiol 2020; 43: 1104–14. https://doi.org/10.1111/pace.14040

  14. Basu-Ray I, Khanra D, Kupó P, Bunch J, Theus SA, Mukherjee A, et al. Outcomes of uninterrupted vs interrupted periprocedural direct oral anticoagulants in atrial fibrillation ablation: a meta-analysis. J Arrhythm 2021; 37:384–93. https://doi.org/10.1002/joa3. 12507

  15. Romero J, Cerrud-Rodriguez RC, Diaz JC, Rodriguez D, Arshad S, Alviz I, et al. Oral anticoagulation after catheter ablation of atrial fibrillation and the associated risk of thromboembolic events and intracranial hemorrhage: a systematic review and meta-analysis. J Cardiovasc Electrophysiol 2019; 30:1250–7. https://doi.org/10.1111/jce. 14052

  16. Liu XH, Xu Q, Luo T, Zhang L, Liu HJ. Discontinuation of oral anticoagulation therapy after successful atrial fibrillation ablation: a systematic review and meta-analysis of prospective studies. PLoS One 2021; 16:e0253709. https://doi.org/10.1371/journal.pone. 0253709

  17. Proietti R, AlTurki A, Di Biase L, China P, Forleo G, Corrado A, et al. Anticoagulation after catheter ablation of atrial fibrillation: an unnecessary evil? A systematic review and meta-analysis. J Cardiovasc Electrophysiol 2019; 30:468–78. https://doi.org/10.1111/jce. 13822

  18. Maduray K, Moneruzzaman M, Changwe GJ, Zhong J. Benefits and risks associated with long-term oral anticoagulation after successful atrial fibrillation catheter ablation: systematic review and meta-analysis. Clin Appl Thromb Hemost 2022; 28:1076029622 1118480. https://doi.org/10.1177/10760296221118480

  19. Brockmeyer M, Lin Y, Parco C, Karathanos A, Krieger T, Schulze V, et al. Uninterrupted anticoagulation during catheter ablation for atrial fibrillation: no

difference in major bleeding and stroke between direct oral anticoagulants and vitamin K antagonists in an updated meta-analysis of randomised controlled trials. Acta Cardiol 2021; 76:288–95. https://doi.org/10.1080/00015385.2020.1724689

  1. Di Monaco A, Guida P, Vitulano N, Quadrini F, Troisi F, Langialonga T, et al. Catheter ablation of atrial fibrillation with uninterrupted anticoagulation: a meta-analysis of six randomized controlled trials. J Cardiovasc Med (Hagerstown) 2020; 21:483–90. https:// doi.org/10.2459/JCM.0000000000000939

  2. Maesen B, Luermans J, Bidar E, Chaldoupi SM, Gelsomino S, Maessen JG, et al. A hybrid approach to complex arrhythmias. Europace 2021; 23:ii28–33. https://doi.org/10.1093/ europace/euab027

  3. van der Heijden CAJ, Vroomen M, Luermans JG, Vos R, Crijns H, Gelsomino S, et al. Hybrid versus catheter ablation in patients with persistent and longstanding persistent atrial fibrillation: a systematic review and meta-analysis. Eur J Cardiothorac Surg 2019; 56: 433–43. https://doi.org/10.1093/ejcts/ezy475

  4. Boersma LV, Castella M, van Boven W, Berruezo A, Yilmaz A, Nadal M, et al. Atrial fibrillation catheter ablation versus surgical ablation treatment (FAST): a 2-center randomized clinical trial. Circulation 2012; 125:23–30. https://doi.org/10.1161/ CIRCULATIONAHA.111.074047

  5. Castella M, Kotecha D, van Laar C, Wintgens L, Castillo Y, Kelder J, et al. Thoracoscopic vs. catheter ablation for atrial fibrillation: long-term follow-up of the FAST randomized trial. Europace 2019; 21:746–53. https://doi.org/10.1093/europace/ euy325

  6. van der Heijden CAJ, Weberndörfer V, Vroomen M, Luermans JG, Chaldoupi SM, Bidar E, et al. Hybrid ablation versus repeated catheter ablation in persistent atrial fibrillation: a randomized controlled trial. JACC Clin Electrophysiol 2023; 9:1013–23. https:// doi.org/10.1016/j.jacep.2022.12.011

  7. DeLurgio DB, Crossen KJ, Gill J, Blauth C, Oza SR, Magnano AR, et al. Hybrid convergent procedure for the treatment of persistent and long-standing persistent atrial fibrillation: results of CONVERGE clinical trial. Circ Arrhythm Electrophysiol 2020; 13: e009288. https://doi.org/10.1161/CIRCEP.120.009288

  8. Pokushalov E, Romanov A, Elesin D, Bogachev-Prokophiev A, Losik D, Bairamova S, et al. Catheter versus surgical ablation of atrial fibrillation after a failed initial pulmonary vein isolation procedure: a randomized controlled trial. J Cardiovasc Electrophysiol 2013; 24:1338–43. https://doi.org/10.1111/jce.12245

  9. Haldar S, Khan HR, Boyalla V, Kralj-Hans I, Jones S, Lord J, et al. Catheter ablation vs. thoracoscopic surgical ablation in long-standing persistent atrial fibrillation: CASA-AF randomized controlled trial. Eur Heart J 2020; 41:4471–80. https://doi.org/10.1093/ eurheartj/ehaa658

  10. Doll N, Weimar T, Kosior DA, Bulava A, Mokracek A, Mönnig G, et al. Efficacy and safety of hybrid epicardial and endocardial ablation versus endocardial ablation in patients with persistent and longstanding persistent atrial fibrillation: a randomised, controlled trial. EClinicalMedicine 2023; 61:102052. https://doi.org/10.1016/j.eclinm.2023. 102052

  11. Malaisrie SC, McCarthy PM, Kruse J, Matsouaka R, Andrei AC, Grau-Sepulveda MV, et al. Burden of preoperative atrial fibrillation in patients undergoing coronary artery bypass grafting. J Thorac Cardiovasc Surg 2018; 155:2358–2367 e1. https://doi.org/10. 1016/j.jtcvs.2018.01.069

  12. Saxena A, Dinh DT, Reid CM, Smith JA, Shardey GC, Newcomb AE. Does preoperative atrial fibrillation portend a poorer prognosis in patients undergoing isolated aortic valve replacement? A multicentre Australian study. Can J Cardiol 2013; 29:697–703. https://doi.org/10.1016/j.cjca.2012.08.016

  13. Quader MA, McCarthy PM, Gillinov AM, Alster JM, Cosgrove DM, 3rd, Lytle BW, et al. Does preoperative atrial fibrillation reduce survival after coronary artery bypass grafting? Ann Thorac Surg 2004; 77:1514–22; discussion 1522–4. https://doi.org/10.1016/j. athoracsur.2003.09.069

  14. Damiano RJ, Jr, Schwartz FH, Bailey MS, Maniar HS, Munfakh NA, Moon MR, et al. The Cox Maze IV procedure: predictors of late recurrence. J Thorac Cardiovasc Surg 2011; 141:113–21. https://doi.org/10.1016/j.jtcvs.2010.08.067

  15. Cox JL, Schuessler RB, Boineau JP. The development of the Maze procedure for the treatment of atrial fibrillation. Semin Thorac Cardiovasc Surg 2000; 12:2–14. https:// doi.org/10.1016/S1043-0679(00)70010-4

  16. Melby SJ, Zierer A, Bailey MS, Cox JL, Lawton JS, Munfakh N, et al. A new era in the surgical treatment of atrial fibrillation: the impact of ablation technology and lesion set on procedural efficacy. Ann Surg 2006; 244:583–92. https://doi.org/10.1097/01.sla. 0000237654.00841.26

  17. Badhwar V, Rankin JS, Damiano RJ, Jr, Gillinov AM, Bakaeen FG, Edgerton JR, et al. The Society of Thoracic Surgeons 2017 clinical practice guidelines for the surgical treatment of atrial fibrillation. Ann Thorac Surg 2017; 103:329–41. https://doi.org/10.1016/ j.athoracsur.2016.10.076

  18. Ad N, Henry L, Hunt S, Holmes SD. Impact of clinical presentation and surgeon experience on the decision to perform surgical ablation. Ann Thorac Surg 2013; 96:763–8; discussion 768–9. https://doi.org/10.1016/j.athoracsur.2013.03.066

  19. Cheng DC, Ad N, Martin J, Berglin EE, Chang BC, Doukas G, et al. Surgical ablation for atrial fibrillation in cardiac surgery: a meta-analysis and systematic review. Innovations (Phila) 2010; 5:84–96. https://doi.org/10.1177/155698451000500204

ESC Guidelines 3401

  1. McClure GR, Belley-Cote EP, Jaffer IH, Dvirnik N, An KR, Fortin G, et al. Surgical ablation of atrial fibrillation: a systematic review and meta-analysis of randomized controlled trials. Europace 2018; 20:1442–50. https://doi.org/10.1093/europace/eux336

  2. Phan K, Xie A, La Meir M, Black D, Yan TD. Surgical ablation for treatment of atrial fibrillation in cardiac surgery: a cumulative meta-analysis of randomised controlled trials. Heart 2014; 100:722–30. https://doi.org/10.1136/heartjnl-2013-305351

  3. Barnett SD, Ad N. Surgical ablation as treatment for the elimination of atrial fibrillation: a meta-analysis. J Thorac Cardiovasc Surg 2006; 131:1029–35. https://doi.org/10.1016/j. jtcvs.2005.10.020

  4. Gillinov AM, Gelijns AC, Parides MK, DeRose JJ, Jr, Moskowitz AJ, Voisine P, et al. Surgical ablation of atrial fibrillation during mitral-valve surgery. N Engl J Med 2015; 372:1399–409. https://doi.org/10.1056/NEJMoa1500528

  5. MacGregor RM, Bakir NH, Pedamallu H, Sinn LA, Maniar HS, Melby SJ, et al. Late results after stand-alone surgical ablation for atrial fibrillation. J Thorac Cardiovasc Surg 2022; 164:1515–1528.e8. https://doi.org/10.1016/j.jtcvs.2021.03.109

  6. Musharbash FN, Schill MR, Sinn LA, Schuessler RB, Maniar HS, Moon MR, et al. Performance of the Cox-Maze IV procedure is associated with improved long-term survival in patients with atrial fibrillation undergoing cardiac surgery. J Thorac Cardiovasc Surg 2018; 155:159–70. https://doi.org/10.1016/j.jtcvs.2017.09.095

  7. Rankin JS, Lerner DJ, Braid-Forbes MJ, McCrea MM, Badhwar V. Surgical ablation of atrial fibrillation concomitant to coronary-artery bypass grafting provides costeffective mortality reduction. J Thorac Cardiovasc Surg 2020; 160:675–686 e13. https://doi.org/10.1016/j.jtcvs.2019.07.131

  8. Suwalski P, Kowalewski M, Jasinski M, Staromlynski J, Zembala M, Widenka K, et al. Survival after surgical ablation for atrial fibrillation in mitral valve surgery: analysis from the Polish National Registry of Cardiac Surgery Procedures (KROK). J Thorac Cardiovasc Surg 2019; 157:1007–1018 e4. https://doi.org/10.1016/j.jtcvs.2018.07.099

  9. Suwalski P, Kowalewski M, Jasinski M, Staromlynski J, Zembala M, Widenka K, et al. Surgical ablation for atrial fibrillation during isolated coronary artery bypass surgery. Eur J Cardiothorac Surg 2020; 57:691–700. https://doi.org/10.1093/ejcts/ezz298

  10. Wehbe M, Albert M, Lewalter T, Ouarrak T, Senges J, Hanke T, et al. The German cardiosurgery atrial fibrillation registry: 1-year follow-up outcomes. Thorac Cardiovasc Surg 2023; 71:255–63. https://doi.org/10.1055/s-0042-1750311

  11. Kim HJ, Kim YJ, Kim M, Yoo JS, Kim DH, Park DW, et al. Surgical ablation for atrial fibrillation during aortic and mitral valve surgery: a nationwide population-based cohort study. J Thorac Cardiovasc Surg 2024; 167:981–93. https://doi.org/10.1016/j.jtcvs. 2022.08.038

  12. Ad N, Henry L, Hunt S, Holmes SD. Do we increase the operative risk by adding the Cox Maze III procedure to aortic valve replacement and coronary artery bypass surgery? J Thorac Cardiovasc Surg 2012; 143:936–44. https://doi.org/10.1016/j.jtcvs.2011. 12.018

  13. Maesen B, van der Heijden CAJ, Bidar E, Vos R, Athanasiou T, Maessen JG. Patient-reported quality of life after stand-alone and concomitant arrhythmia surgery: a systematic review and meta-analysis. Interact Cardiovasc Thorac Surg 2022; 34:339–48. https://doi.org/10.1093/icvts/ivab282

  14. Osmancik P, Budera P, Talavera D, Hlavicka J, Herman D, Holy J, et al. Five-year outcomes in cardiac surgery patients with atrial fibrillation undergoing concomitant surgical ablation versus no ablation. The long-term follow-up of the PRAGUE-12 study. Heart Rhythm 2019; 16:1334–40. https://doi.org/10.1016/j.hrthm.2019.05.001

  15. Lee R, Jivan A, Kruse J, McGee EC, Jr, Malaisrie SC, Bernstein R, et al. Late neurologic events after surgery for atrial fibrillation: rare but relevant. Ann Thorac Surg 2013; 95: 126–31; discussion 131–2. https://doi.org/10.1016/j.athoracsur.2012.08.048

  16. Kowalewski M, Pasierski M, Kołodziejczak M, Litwinowicz R, Kowalówka A, Wańha W, et al. Atrial fibrillation ablation improves late survival after concomitant cardiac surgery. J Thorac Cardiovasc Surg 2023; 166:1656–1668.e8. https://doi.org/10.1016/j.jtcvs.2022. 04.035

  17. Cox JL, Ad N, Palazzo T. Impact of the maze procedure on the stroke rate in patients with atrial fibrillation. J Thorac Cardiovasc Surg 1999; 118:833–40. https://doi.org/10. 1016/S0022-5223(99)70052-8

  18. Huffman MD, Karmali KN, Berendsen MA, Andrei AC, Kruse J, McCarthy PM, et al. Concomitant atrial fibrillation surgery for people undergoing cardiac surgery. Cochrane Database Syst Rev 2016; 8:CD011814. https://doi.org/10.1002/14651858. CD011814.pub2

  19. Kowalewski M, Pasierski M, Finke J, Kolodziejczak M, Staromlynski J, Litwinowicz R, et al. Permanent pacemaker implantation after valve and arrhythmia surgery in patients with preoperative atrial fibrillation. Heart Rhythm 2022; 19:1442–9. https://doi.org/10. 1016/j.hrthm.2022.04.007

  20. Pokushalov E, Romanov A, Corbucci G, Cherniavsky A, Karaskov A. Benefit of ablation of first diagnosed paroxysmal atrial fibrillation during coronary artery bypass grafting: a pilot study. Eur J Cardiothorac Surg 2012; 41:556–60. https://doi.org/10.1093/ejcts/ ezr101

  21. Yoo JS, Kim JB, Ro SK, Jung Y, Jung SH, Choo SJ, et al. Impact of concomitant surgical atrial fibrillation ablation in patients undergoing aortic valve replacement. Circ J 2014; 78:1364–71. https://doi.org/10.1253/circj.CJ-13-1533

  22. Malaisrie SC, Lee R, Kruse J, Lapin B, Wang EC, Bonow RO, et al. Atrial fibrillation ablation in patients undergoing aortic valve replacement. J Heart Valve Dis 2012; 21: 350–7.

  23. Rankin JS, Lerner DJ, Braid-Forbes MJ, Ferguson MA, Badhwar V. One-year mortality and costs associated with surgical ablation for atrial fibrillation concomitant to coronary artery bypass grafting. Eur J Cardiothorac Surg 2017; 52:471–7. https://doi.org/10. 1093/ejcts/ezx126

  24. Schill MR, Musharbash FN, Hansalia V, Greenberg JW, Melby SJ, Maniar HS, et al. Late results of the Cox-Maze IV procedure in patients undergoing coronary artery bypass grafting. J Thorac Cardiovasc Surg 2017; 153:1087–94. https://doi.org/10.1016/j.jtcvs. 2016.12.034

  25. Gupta D, Ding WY, Calvert P, Williams E, Das M, Tovmassian L, et al. Cryoballoon pulmonary vein isolation as first-line treatment for typical atrial flutter. Heart 2023; 109:364–71. https://doi.org/10.1136/heartjnl-2022-321729

  26. Steinberg C, Champagne J, Deyell MW, Dubuc M, Leong-Sit P, Calkins H, et al. Prevalence and outcome of early recurrence of atrial tachyarrhythmias in the cryoballoon vs irrigated radiofrequency catheter ablation (CIRCA-DOSE) study. Heart Rhythm 2021; 18:1463–70. https://doi.org/10.1016/j.hrthm.2021.06.1172

  27. Heijman J, Linz D, Schotten U. Dynamics of atrial fibrillation mechanisms and comorbidities. Annu Rev Physiol 2021; 83:83–106. https://doi.org/10.1146/annurevphysiol-031720-085307

  28. Fabritz L, Crijns H, Guasch E, Goette A, Hausler KG, Kotecha D, et al. Dynamic risk assessment to improve quality of care in patients with atrial fibrillation: the 7th AFNET/EHRA consensus conference. Europace 2021; 23:329–44. https://doi.org/10. 1093/europace/euaa279

  29. Brandes A, Smit MD, Nguyen BO, Rienstra M, Van Gelder IC. Risk factor management in atrial fibrillation. Arrhythm Electrophysiol Rev 2018; 7:118–27. https://doi.org/10. 15420/aer.2018.18.2

  30. Pokorney SD, Cocoros N, Al-Khalidi HR, Haynes K, Li S, Al-Khatib SM, et al. Effect of mailing educational material to patients with atrial fibrillation and their clinicians on use of oral anticoagulants: a randomized clinical trial. JAMA Netw Open 2022; 5:e2214321. https://doi.org/10.1001/jamanetworkopen.2022.14321

  31. Ritchie LA, Penson PE, Akpan A, Lip GYH, Lane DA. Integrated care for atrial fibrillation management: the role of the pharmacist. Am J Med 2022; 135:1410–26. https://doi. org/10.1016/j.amjmed.2022.07.014

  32. Guo Y, Guo J, Shi X, Yao Y, Sun Y, Xia Y, et al. Mobile health technology-supported atrial fibrillation screening and integrated care: a report from the mAFA-II trial longterm extension cohort. Eur J Intern Med 2020; 82:105–11. https://doi.org/10.1016/j. ejim.2020.09.024

  33. Yan H, Du YX, Wu FQ, Lu XY, Chen RM, Zhang Y. Effects of nurse-led multidisciplinary team management on cardiovascular hospitalization and quality of life in patients with atrial fibrillation: randomized controlled trial. Int J Nurs Stud 2022; 127:104159. https://doi.org/10.1016/j.ijnurstu.2021.104159

  34. Stewart S, Ball J, Horowitz JD, Marwick TH, Mahadevan G, Wong C, et al. Standard versus atrial fibrillation-specific management strategy (SAFETY) to reduce recurrent admission and prolong survival: pragmatic, multicentre, randomised controlled trial. Lancet 2015; 385:775–84. https://doi.org/10.1016/S0140-6736(14)61992-9

  35. Cox JL, Parkash R, Foster GA, Xie F, MacKillop JH, Ciaccia A, et al. Integrated management program advancing community treatment of atrial fibrillation (IMPACT-AF): a cluster randomized trial of a computerized clinical decision support tool. Am Heart J 2020; 224:35–46. https://doi.org/10.1016/j.ahj.2020.02.019

  36. Sposato LA, Stirling D, Saposnik G. Therapeutic decisions in atrial fibrillation for stroke prevention: the role of aversion to ambiguity and physicians’ risk preferences. J Stroke Cerebrovasc Dis 2018; 27:2088–95. https://doi.org/10.1016/j.jstrokecerebrovasdis. 2018.03.005

  37. Noseworthy PA, Brito JP, Kunneman M, Hargraves IG, Zeballos-Palacios C, Montori VM, et al. Shared decision-making in atrial fibrillation: navigating complex issues in partnership with the patient. J Interv Card Electrophysiol 2019; 56:159–63. https://doi.org/10. 1007/s10840-018-0465-5

  38. Poorcheraghi H, Negarandeh R, Pashaeypoor S, Jorian J. Effect of using a mobile drug management application on medication adherence and hospital readmission among elderly patients with polypharmacy: a randomized controlled trial. BMC Health Serv Res 2023; 23:1192. https://doi.org/10.1186/s12913-023-10177-4

  39. Kotecha D, Chua WWL, Fabritz L, Hendriks J, Casadei B, Schotten U, et al. European Society of Cardiology (ESC) Atrial Fibrillation Guidelines Taskforce, the CATCH ME consortium, and the European Heart Rhythm Association (EHRA). European Society of Cardiology smartphone and tablet applications for patients with atrial fibrillation and their health care providers. Europace 2018; 20:225–33. https://doi.org/10. 1093/europace/eux299

  40. Bunting KV, Gill SK, Sitch A, Mehta S, O’Connor K, Lip GY, et al. Improving the diagnosis of heart failure in patients with atrial fibrillation. Heart 2021; 107:902–8. https:// doi.org/10.1136/heartjnl-2020-318557

  41. Donal E, Lip GY, Galderisi M, Goette A, Shah D, Marwan M, et al. EACVI/EHRA expert consensus document on the role of multi-modality imaging for the evaluation of patients with atrial fibrillation. Eur Heart J Cardiovasc Imaging 2016; 17:355–83. https:// doi.org/10.1093/ehjci/jev354

ESC Guidelines

  1. Bunting KV, O’Connor K, Steeds RP, Kotecha D. Cardiac imaging to assess left ventricular systolic function in atrial fibrillation. Am J Cardiol 2021; 139:40–9. https://doi. org/10.1016/j.amjcard.2020.10.012

  2. Timperley J, Mitchell AR, Becher H. Contrast echocardiography for left ventricular opacification. Heart 2003; 89:1394–7. https://doi.org/10.1136/heart.89.12.1394

  3. Kotecha D, Mohamed M, Shantsila E, Popescu BA, Steeds RP. Is echocardiography valid and reproducible in patients with atrial fibrillation? A systematic review. Europace 2017; 19:1427–38. https://doi.org/10.1093/europace/eux027

  4. Quintana RA, Dong T, Vajapey R, Reyaldeen R, Kwon DH, Harb S, et al. Preprocedural multimodality imaging in atrial fibrillation. Circ Cardiovasc Imaging 2022; 15:e014386. https://doi.org/10.1161/CIRCIMAGING.122.014386

  5. Laubrock K, von Loesch T, Steinmetz M, Lotz J, Frahm J, Uecker M, et al. Imaging of arrhythmia: real-time cardiac magnetic resonance imaging in atrial fibrillation. Eur J Radiol Open 2022; 9:100404. https://doi.org/10.1016/j.ejro.2022.100404

  6. Sciagrà R, Sotgia B, Boni N, Pupi A. Assessment of the influence of atrial fibrillation on gated SPECT perfusion data by comparison with simultaneously acquired nongated SPECT data. J Nucl Med 2008; 49:1283–7. https://doi.org/10.2967/jnumed.108.051797

  7. Clayton B, Roobottom C, Morgan-Hughes G. CT coronary angiography in atrial fibrillation: a comparison of radiation dose and diagnostic confidence with retrospective gating vs prospective gating with systolic acquisition. Br J Radiol 2015; 88:20150533. https://doi.org/10.1259/bjr.20150533

  8. Thrall G, Lane D, Carroll D, Lip GY. Quality of life in patients with atrial fibrillation: a systematic review. Am J Med 2006; 119:448.e1–19. https://doi.org/10.1016/j.amjmed. 2005.10.057

  9. Steinberg BA, Dorian P, Anstrom KJ, Hess R, Mark DB, Noseworthy PA, et al. Patient-reported outcomes in atrial fibrillation research: results of a Clinicaltrials.gov analysis. JACC Clin Electrophysiol 2019; 5:599–605. https://doi.org/10.1016/j.jacep.2019. 03.008

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ESC Guidelines 3407

Proc Natl Acad Sci USA 2020; 117:7990–8000. https://doi.org/10.1073/pnas.19148 53117

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ESC Guidelines

  1. Mazzanti A, Ng K, Faragli A, Maragna R, Chiodaroli E, Orphanou N, et al. Arrhythmogenic right ventricular cardiomyopathy: clinical course and predictors of arrhythmic risk. J Am Coll Cardiol 2016; 68:2540–50. https://doi.org/10.1016/j.jacc.2016. 09.951

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  3. Beckmann BM, Holinski-Feder E, Walter MC, Haserück N, Reithmann C, Hinterseer M, et al. Laminopathy presenting as familial atrial fibrillation. Int J Cardiol 2010; 145: 394–6. https://doi.org/10.1016/j.ijcard.2010.04.024

  4. Pizzale S, Gollob MH, Gow R, Birnie DH. Sudden death in a young man with catecholaminergic polymorphic ventricular tachycardia and paroxysmal atrial fibrillation. J Cardiovasc Electrophysiol 2008; 19:1319–21. https://doi.org/10.1111/j.1540-8167. 2008.01211.x

  5. Sugiyasu A, Oginosawa Y, Nogami A, Hata Y. A case with catecholaminergic polymorphic ventricular tachycardia unmasked after successful ablation of atrial tachycardias from pulmonary veins. Pacing Clin Electrophysiol 2009; 32:e21–4. https://doi.org/10. 1111/j.1540-8159.2009.02519.x

  6. Veltmann C, Kuschyk J, Schimpf R, Streitner F, Schoene N, Borggrefe M, et al. Prevention of inappropriate ICD shocks in patients with Brugada syndrome. Clin Res Cardiol 2010; 99:37–44. https://doi.org/10.1007/s00392-009-0075-4

  7. Brugada J, Katritsis DG, Arbelo E, Arribas F, Bax JJ, Blomstrom-Lundqvist C, et al. 2019 ESC Guidelines for the management of patients with supraventricular tachycardia. The Task Force for the management of patients with supraventricular tachycardia of the European Society of Cardiology (ESC). Eur Heart J 2020; 41:655–720. https://doi.org/ 10.1093/eurheartj/ehz467

  8. Klein GJ, Bashore TM, Sellers TD, Pritchett EL, Smith WM, Gallagher JJ. Ventricular fibrillation in the Wolff–Parkinson–White syndrome. N Engl J Med 1979; 301:1080–5. https://doi.org/10.1056/NEJM197911153012003

  9. Morady F, DiCarlo LA, Jr, Baerman JM, De Buitleir M. Effect of propranolol on ventricular rate during atrial fibrillation in the Wolff–Parkinson–White syndrome. Pacing Clin Electrophysiol 1987; 10:492–6. https://doi.org/10.1111/j.1540-8159.1987. tb04511.x

  10. Sellers TD, Jr, Bashore TM, Gallagher JJ. Digitalis in the pre-excitation syndrome. Analysis during atrial fibrillation. Circulation 1977; 56:260–7. https://doi.org/10.1161/ 01.CIR.56.2.260

  11. Glatter KA, Dorostkar PC, Yang Y, Lee RJ, Van Hare GF, Keung E, et al. Electrophysiological effects of ibutilide in patients with accessory pathways. Circulation 2001; 104:1933–9. https://doi.org/10.1161/hc4101.097538

  12. Ludmer PL, McGowan NE, Antman EM, Friedman PL. Efficacy of propafenone in Wolff–Parkinson–White syndrome: electrophysiologic findings and long-term followup. J Am Coll Cardiol 1987; 9:1357–63. https://doi.org/10.1016/S0735-1097(87)80478-3

  13. Simonian SM, Lotfipour S, Wall C, Langdorf MI. Challenging the superiority of amiodarone for rate control in Wolff–Parkinson–White and atrial fibrillation. Intern Emerg Med 2010; 5:421–6. https://doi.org/10.1007/s11739-010-0385-6

  14. Arbelo E, Protonotarios A, Gimeno JR, Arbustini E, Barriales-Villa R, Basso C, et al. 2023 ESC Guidelines for the management of cardiomyopathies. Eur Heart J 2023; 44:3503–626. https://doi.org/10.1093/eurheartj/ehad194

  15. Hu YF, Liu CJ, Chang PM, Tsao HM, Lin YJ, Chang SL, et al. Incident thromboembolism and heart failure associated with new-onset atrial fibrillation in cancer patients. Int J Cardiol 2013; 165:355–7. https://doi.org/10.1016/j.ijcard.2012.08.036

  16. Mosarla RC, Vaduganathan M, Qamar A, Moslehi J, Piazza G, Giugliano RP. Anticoagulation strategies in patients with cancer: JACC review topic of the week. J Am Coll Cardiol 2019; 73:1336–49. https://doi.org/10.1016/j.jacc.2019.01.017

  17. Malavasi VL, Fantecchi E, Gianolio L, Pesce F, Longo G, Marietta M, et al. Atrial fibrillation in patients with active malignancy and use of anticoagulants: under-prescription but no adverse impact on all-cause mortality. Eur J Intern Med 2019; 59:27–33. https:// doi.org/10.1016/j.ejim.2018.10.012

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  20. Alexandre J, Salem JE, Moslehi J, Sassier M, Ropert C, Cautela J, et al. Identification of anticancer drugs associated with atrial fibrillation: analysis of the WHO pharmacovigilance database. Eur Heart J Cardiovasc Pharmacother 2021; 7:312–20. https://doi.org/10. 1093/ehjcvp/pvaa037

  21. Guha A, Fradley MG, Dent SF, Weintraub NL, Lustberg MB, Alonso A, et al. Incidence, risk factors, and mortality of atrial fibrillation in breast cancer: a SEER-medicare analysis. Eur Heart J 2022; 43:300–12. https://doi.org/10.1093/eurheartj/ehab745

  22. Pastori D, Marang A, Bisson A, Menichelli D, Herbert J, Lip GYH, et al. Thromboembolism, mortality, and bleeding in 2,435,541 atrial fibrillation patients with and without cancer: a nationwide cohort study. Cancer 2021; 127:2122–9. https://doi.org/10.1002/cncr.33470

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  25. Chen ST, Hellkamp AS, Becker RC, Berkowitz SD, Breithardt G, Fox KAA, et al. Efficacy and safety of rivaroxaban vs. warfarin in patients with non-valvular atrial fibrillation and a history of cancer: observations from ROCKET AF. Eur Heart J Qual Care Clin Outcomes 2019; 5:145–52. https://doi.org/10.1093/ehjqcco/qcy040

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  27. Fanola CL, Ruff CT, Murphy SA, Jin J, Duggal A, Babilonia NA, et al. Efficacy and safety of edoxaban in patients with active malignancy and atrial fibrillation: analysis of the ENGAGE AF-TIMI 48 trial. J Am Heart Assoc 2018; 7:e008987. https://doi.org/10. 1161/JAHA.118.008987

  28. Sawant AC, Kumar A, McCray W, Tetewsky S, Parone L, Sridhara S, et al. Superior safety of direct oral anticoagulants compared to warfarin in patients with atrial fibrillation and underlying cancer: a national veterans affairs database study. J Geriatr Cardiol 2019; 16:706–9. https://doi.org/10.11909/j.issn.1671-5411.2019.09.006

  29. Shah S, Norby FL, Datta YH, Lutsey PL, MacLehose RF, Chen LY, et al. Comparative effectiveness of direct oral anticoagulants and warfarin in patients with cancer and atrial fibrillation. Blood Adv 2018; 2:200–9. https://doi.org/10.1182/bloodadvances. 2017010694

  30. Mariani MV, Magnocavallo M, Straito M, Piro A, Severino P, Iannucci G, et al. Direct oral anticoagulants versus vitamin K antagonists in patients with atrial fibrillation and cancer a meta-analysis. J Thromb Thrombolysis 2021; 51:419–29. https://doi.org/10. 1007/s11239-020-02304-3

  31. Deitelzweig S, Keshishian AV, Zhang Y, Kang A, Dhamane AD, Luo X, et al. Effectiveness and safety of oral anticoagulants among nonvalvular atrial fibrillation patients with active cancer. JACC CardioOncol 2021; 3:411–24. https://doi.org/10.1016/j. jaccao.2021.06.004

  32. Lin YS, Kuan FC, Chao TF, Wu M, Chen SW, Chen MC, et al. Mortality associated with the use of non-vitamin K antagonist oral anticoagulants in cancer patients: dabigatran versus rivaroxaban. Cancer Med 2021; 10:7079–88. https://doi.org/10.1002/ cam4.4241

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  34. Atterman A, Friberg L, Asplund K, Engdahl J. Net benefit of oral anticoagulants in patients with atrial fibrillation and active cancer: a nationwide cohort study. Europace 2020; 22:58–65. https://doi.org/10.1093/europace/euz306

  35. Falanga A, Leader A, Ambaglio C, Bagoly Z, Castaman G, Elalamy I, et al. EHA guidelines on management of antithrombotic treatments in thrombocytopenic patients with cancer. Hemasphere 2022; 6:e750. https://doi.org/10.1097/HS9.00000000000 00750

  36. Lancellotti P, Suter TM, López-Fernández T, Galderisi M, Lyon AR, Van der Meer P, et al. Cardio-oncology services: rationale, organization, and implementation. Eur Heart J 2019; 40:1756–63. https://doi.org/10.1093/eurheartj/ehy453

  37. Richter D, Guasti L, Walker D, Lambrinou E, Lionis C, Abreu A, et al. Frailty in cardiology: definition, assessment and clinical implications for general cardiology. A consensus document of the Council for Cardiology Practice (CCP), Association for Acute Cardio Vascular Care (ACVC), Association of Cardiovascular Nursing and Allied Professions (ACNAP), European Association of Preventive Cardiology (EAPC), European Heart Rhythm Association (EHRA), Council on Valvular Heart Diseases (VHD), Council on Hypertension (CHT), Council of Cardio-Oncology (CCO), Working Group (WG) aorta and peripheral vascular diseases, WG e-cardiology, WG thrombosis, of the European Society of Cardiology, European Primary Care Cardiology Society (EPCCS). Eur J Prev Cardiol 2022; 29:216–27. https://doi. org/10.1093/eurjpc/zwaa167

  38. Proietti M, Vitolo M, Harrison SL, Lane DA, Fauchier L, Marin F, et al. Impact of clinical phenotypes on management and outcomes in European atrial fibrillation patients: a report from the ESC-EHRA EURObservational Research Programme in AF (EORP-AF) general long-term registry. BMC Med 2021; 19:256. https://doi.org/10. 1186/s12916-021-02120-3

  39. Proietti M, Romiti GF, Vitolo M, Harrison SL, Lane DA, Fauchier L, et al. Epidemiology and impact of frailty in patients with atrial fibrillation in Europe. Age Ageing 2022; 51 afac192. https://doi.org/10.1093/ageing/afac192

  40. Savelieva I, Fumagalli S, Kenny RA, Anker S, Benetos A, Boriani G, et al. EHRA expert consensus document on the management of arrhythmias in frailty syndrome, endorsed by the Heart Rhythm Society (HRS), Asia Pacific Heart Rhythm Society (APHRS), Latin America Heart Rhythm Society (LAHRS), and Cardiac Arrhythmia

ESC Guidelines 3409

Society of Southern Africa (CASSA). Europace 2023; 25:1249–76. https://doi.org/10. 1093/europace/euac123

  1. Clegg A, Young J, Iliffe S, Rikkert MO, Rockwood K. Frailty in elderly people. Lancet 2013; 381:752–62. https://doi.org/10.1016/S0140-6736(12)62167-9

  2. Villani ER, Tummolo AM, Palmer K, Gravina EM, Vetrano DL, Bernabei R, et al. Frailty and atrial fibrillation: a systematic review. Eur J Intern Med 2018; 56:33–8. https://doi. org/10.1016/j.ejim.2018.04.018

  3. Hang F, Chen J, Wang Z, Yan J, Wu Y. Association between the frailty and new-onset atrial fibrillation/flutter among elderly hypertensive patients. Front Cardiovasc Med 2022; 9:881946. https://doi.org/10.3389/fcvm.2022.881946

  4. Steinberg BA, Holmes DN, Ezekowitz MD, Fonarow GC, Kowey PR, Mahaffey KW, et al. Rate versus rhythm control for management of atrial fibrillation in clinical practice: results from the Outcomes Registry for Better Informed Treatment of Atrial Fibrillation (ORBIT-AF) registry. Am Heart J 2013; 165:622–9. https://doi.org/10. 1016/j.ahj.2012.12.019

  5. Ko D, Lin KJ, Bessette LG, Lee SB, Walkey AJ, Cheng S, et al. Trends in use of oral anticoagulants in older adults with newly diagnosed atrial fibrillation, 2010–2020. JAMA Netw Open 2022; 5:e2242964. https://doi.org/10.1001/jamanetworkopen. 2022.42964

  6. Bul M, Shaikh F, McDonagh J, Ferguson C. Frailty and oral anticoagulant prescription in adults with atrial fibrillation: a systematic review. Aging Med (Milton) 2023; 6: 195–206. https://doi.org/10.1002/agm2.12214

  7. Hu J, Zhou Y, Cai Z. Outcome of novel oral anticoagulant versus warfarin in frail elderly patients with atrial fibrillation: a systematic review and meta-analysis of retrospective studies. Acta Clin Belg 2023; 78:367–77. https://doi.org/10.1080/17843286. 2023.2179908

  8. Zeng S, Zheng Y, Jiang J, Ma J, Zhu W, Cai X. Effectiveness and safety of DOACs vs. warfarin in patients with atrial fibrillation and frailty: a systematic review and meta-analysis. Front Cardiovasc Med 2022; 9:907197. https://doi.org/10.3389/fcvm. 2022.907197

  9. Grymonprez M, Petrovic M, De Backer TL, Steurbaut S, Lahousse L. Impact of frailty on the effectiveness and safety of non-vitamin K antagonist oral anticoagulants (NOACs) in patients with atrial fibrillation: a nationwide cohort study. Eur Heart J Qual Care Clin Outcomes 2024; 10:55–65. https://doi.org/10.1093/ehjqcco/qcad019

  10. Kim D, Yang PS, Sung JH, Jang E, Yu HT, Kim TH, et al. Effectiveness and safety of anticoagulation therapy in frail patients with atrial fibrillation. Stroke 2022; 53:1873–82. https://doi.org/10.1161/STROKEAHA.121.036757

  11. Chao TF, Liu CJ, Lin YJ, Chang SL, Lo LW, Hu YF, et al. Oral anticoagulation in very elderly patients with atrial fibrillation: a nationwide cohort study. Circulation 2018; 138:37–47. https://doi.org/10.1161/CIRCULATIONAHA.117.031658

  12. Da Costa A, Thévenin J, Roche F, Romeyer-Bouchard C, Abdellaoui L, Messier M, et al. Results from the Loire-Ardèche-Drôme-Isère-Puy-de-Dôme (LADIP) trial on atrial flutter, a multicentric prospective randomized study comparing amiodarone and radiofrequency ablation after the first episode of symptomatic atrial flutter. Circulation 2006; 114:1676–81. https://doi.org/10.1161/CIRCULATIONAHA.106. 638395

  13. Natale A, Newby KH, Pisano E, Leonelli F, Fanelli R, Potenza D, et al. Prospective randomized comparison of antiarrhythmic therapy versus first-line radiofrequency ablation in patients with atrial flutter. J Am Coll Cardiol 2000; 35:1898–904. https://doi.org/ 10.1016/S0735-1097(00)00635-5

  14. Chinitz JS, Gerstenfeld EP, Marchlinski FE, Callans DJ. Atrial fibrillation is common after ablation of isolated atrial flutter during long-term follow-up. Heart Rhythm 2007; 4:1029–33. https://doi.org/10.1016/j.hrthm.2007.04.002

  15. De Bortoli A, Shi LB, Ohm OJ, Hoff PI, Schuster P, Solheim E, et al. Incidence and clinical predictors of subsequent atrial fibrillation requiring additional ablation after cavotricuspid isthmus ablation for typical atrial flutter. Scand Cardiovasc J 2017; 51:123–8. https://doi.org/10.1080/14017431.2017.1304570

  16. Rahman F, Wang N, Yin X, Ellinor PT, Lubitz SA, LeLorier PA, et al. Atrial flutter: clinical risk factors and adverse outcomes in the Framingham Heart Study. Heart Rhythm 2016; 13:233–40. https://doi.org/10.1016/j.hrthm.2015.07.031

  17. Roth GA, Mensah GA, Johnson CO, Addolorato G, Ammirati E, Baddour LM, et al. Global burden of cardiovascular diseases and risk factors, 1990–2019: update from the GBD 2019 study. J Am Coll Cardiol 2020; 76:2982–3021. https://doi.org/10. 1016/j.jacc.2020.11.010

  18. Lippi G, Sanchis-Gomar F, Cervellin G. Global epidemiology of atrial fibrillation: an increasing epidemic and public health challenge. Int J Stroke 2021; 16:217–21. https://doi.org/10.1177/1747493019897870

  19. Alonso A, Alam AB, Kamel H, Subbian V, Qian J, Boerwinkle E, et al. Epidemiology of atrial fibrillation in the all of US research program. PLoS One 2022; 17:e0265498. https://doi.org/10.1371/journal.pone.0265498

  20. Ghelani KP, Chen LY, Norby FL, Soliman EZ, Koton S, Alonso A. Thirty-year trends in the incidence of atrial fibrillation: the ARIC study. J Am Heart Assoc 2022; 11:e023583. https://doi.org/10.1161/JAHA.121.023583

  21. Williams BA, Chamberlain AM, Blankenship JC, Hylek EM, Voyce S. Trends in atrial fibrillation incidence rates within an integrated health care delivery system, 2006 to

  22. JAMA Netw Open 2020; 3:e2014874. https://doi.org/10.1001/jamanetwork open.2020.14874

  23. Magnussen C, Niiranen TJ, Ojeda FM, Gianfagna F, Blankenberg S, Njølstad I, et al. Sex differences and similarities in atrial fibrillation epidemiology, risk factors, and mortality in community cohorts: results from the BiomarCaRE consortium (Biomarker for Cardiovascular Risk Assessment in Europe). Circulation 2017; 136:1588–97. https:// doi.org/10.1161/CIRCULATIONAHA.117.028981

  24. Rodriguez CJ, Soliman EZ, Alonso A, Swett K, Okin PM, Goff DC, Jr, et al. Atrial fibrillation incidence and risk factors in relation to race-ethnicity and the population attributable fraction of atrial fibrillation risk factors: the multi-ethnic study of atherosclerosis. Ann Epidemiol 2015; 25:71–6, 76.e1. https://doi.org/10.1016/j. annepidem.2014.11.024

  25. Ugowe FE, Jackson LR, 2nd, Thomas KL. Racial and ethnic differences in the prevalence, management, and outcomes in patients with atrial fibrillation: a systematic review. Heart Rhythm 2018; 15:1337–45. https://doi.org/10.1016/j.hrthm.2018.05.019

  26. Volgman AS, Bairey Merz CN, Benjamin EJ, Curtis AB, Fang MC, Lindley KJ, et al. Sex and race/ethnicity differences in atrial fibrillation. J Am Coll Cardiol 2019; 74:2812–5. https://doi.org/10.1016/j.jacc.2019.09.045

  27. Chung SC, Sofat R, Acosta-Mena D, Taylor JA, Lambiase PD, Casas JP, et al. Atrial fibrillation epidemiology, disparity and healthcare contacts: a population-wide study of 5.6 million individuals. Lancet Reg Health Eur 2021; 7:100157. https://doi.org/10. 1016/j.lanepe.2021.100157

  28. Svennberg E, Tjong F, Goette A, Akoum N, Di Biase L, Bordachar P, et al. How to use digital devices to detect and manage arrhythmias: an EHRA practical guide. Europace 2022; 24:979–1005. https://doi.org/10.1093/europace/euac038

  29. Spatz ES, Ginsburg GS, Rumsfeld JS, Turakhia MP. Wearable digital health technologies for monitoring in cardiovascular medicine. N Engl J Med 2024; 390:346–56. https://doi.org/10.1056/NEJMra2301903

  30. Cooke G, Doust J, Sanders S. Is pulse palpation helpful in detecting atrial fibrillation? A systematic review. J Fam Pract 2006; 55:130–4.

  31. Attia ZI, Noseworthy PA, Lopez-Jimenez F, Asirvatham SJ, Deshmukh AJ, Gersh BJ, et al. An artificial intelligence-enabled ECG algorithm for the identification of patients with atrial fibrillation during sinus rhythm: a retrospective analysis of outcome prediction. Lancet 2019; 394:861–7. https://doi.org/10.1016/S0140-6736(19)31721-0

  32. Hobbs FD, Fitzmaurice DA, Mant J, Murray E, Jowett S, Bryan S, et al. A randomised controlled trial and cost-effectiveness study of systematic screening (targeted and total population screening) versus routine practice for the detection of atrial fibrillation in people aged 65 and over. The SAFE study. Health Technol Assess 2005; 9:iii–iv, ix-x, 1–74. https://doi.org/10.3310/hta9400

  33. Grond M, Jauss M, Hamann G, Stark E, Veltkamp R, Nabavi D, et al. Improved detection of silent atrial fibrillation using 72-hour Holter ECG in patients with ischemic stroke: a prospective multicenter cohort study. Stroke 2013; 44:3357–64. https:// doi.org/10.1161/STROKEAHA.113.001884

  34. Rizos T, Guntner J, Jenetzky E, Marquardt L, Reichardt C, Becker R, et al. Continuous stroke unit electrocardiographic monitoring versus 24-hour Holter electrocardiography for detection of paroxysmal atrial fibrillation after stroke. Stroke 2012; 43: 2689–94. https://doi.org/10.1161/STROKEAHA.112.654954

  35. Doliwa PS, Frykman V, Rosenqvist M. Short-term ECG for out of hospital detection of silent atrial fibrillation episodes. Scand Cardiovasc J 2009; 43:163–8. https://doi.org/ 10.1080/14017430802593435

  36. Tieleman RG, Plantinga Y, Rinkes D, Bartels GL, Posma JL, Cator R, et al. Validation and clinical use of a novel diagnostic device for screening of atrial fibrillation. Europace 2014; 16:1291–5. https://doi.org/10.1093/europace/euu057

  37. Kearley K, Selwood M, Van den Bruel A, Thompson M, Mant D, Hobbs FR, et al. Triage tests for identifying atrial fibrillation in primary care: a diagnostic accuracy study comparing single-lead ECG and modified BP monitors. BMJ Open 2014; 4: e004565. https://doi.org/10.1136/bmjopen-2013-004565

  38. Barrett PM, Komatireddy R, Haaser S, Topol S, Sheard J, Encinas J, et al. Comparison of 24-hour Holter monitoring with 14-day novel adhesive patch electrocardiographic monitoring. Am J Med 2014; 127:95.e11–7. https://doi.org/10.1016/j.amjmed.2013.10. 003

  39. Turakhia MP, Hoang DD, Zimetbaum P, Miller JD, Froelicher VF, Kumar UN, et al. Diagnostic utility of a novel leadless arrhythmia monitoring device. Am J Cardiol 2013; 112:520–4. https://doi.org/10.1016/j.amjcard.2013.04.017

  40. Rosenberg MA, Samuel M, Thosani A, Zimetbaum PJ. Use of a noninvasive continuous monitoring device in the management of atrial fibrillation: a pilot study. Pacing Clin Electrophysiol 2013; 36:328–33. https://doi.org/10.1111/pace.12053

  41. Turakhia MP, Ullal AJ, Hoang DD, Than CT, Miller JD, Friday KJ, et al. Feasibility of extended ambulatory electrocardiogram monitoring to identify silent atrial fibrillation in high-risk patients: the Screening Study for Undiagnosed Atrial Fibrillation (STUDY-AF). Clin Cardiol 2015; 38:285–92. https://doi.org/10.1002/clc.22387

  42. Rooney MR, Soliman EZ, Lutsey PL, Norby FL, Loehr LR, Mosley TH, et al. Prevalence and characteristics of subclinical atrial fibrillation in a community-dwelling elderly population: the ARIC study. Circ Arrhythm Electrophysiol 2019; 12:e007390. https:// doi.org/10.1161/CIRCEP.119.007390

ESC Guidelines

  1. Stehlik J, Schmalfuss C, Bozkurt B, Nativi-Nicolau J, Wohlfahrt P, Wegerich S, et al. Continuous wearable monitoring analytics predict heart failure hospitalization: the LINK-HF multicenter study. Circ Heart Fail 2020; 13:e006513. https://doi.org/10. 1161/CIRCHEARTFAILURE.119.006513

  2. Ganne C, Talkad SN, Srinivas D, Somanna S. Ruptured blebs and racing hearts: autonomic cardiac changes in neurosurgeons during microsurgical clipping of aneurysms. Br J Neurosurg 2016; 30:450–2. https://doi.org/10.3109/02688697.2016.1159656

  3. Smith WM, Riddell F, Madon M, Gleva MJ. Comparison of diagnostic value using a small, single channel, P-wave centric sternal ECG monitoring patch with a standard 3-lead Holter system over 24 hours. Am Heart J 2017; 185:67–73. https://doi.org/ 10.1016/j.ahj.2016.11.006

  4. Olson JA, Fouts AM, Padanilam BJ, Prystowsky EN. Utility of mobile cardiac outpatient telemetry for the diagnosis of palpitations, presyncope, syncope, and the assessment of therapy efficacy. J Cardiovasc Electrophysiol 2007; 18:473–7. https://doi. org/10.1111/j.1540-8167.2007.00779.x

  5. Derkac WM, Finkelmeier JR, Horgan DJ, Hutchinson MD. Diagnostic yield of asymptomatic arrhythmias detected by mobile cardiac outpatient telemetry and autotrigger looping event cardiac monitors. J Cardiovasc Electrophysiol 2017; 28:1475–8. https:// doi.org/10.1111/jce.13342

  6. Teplitzky BA, McRoberts M, Ghanbari H. Deep learning for comprehensive ECG annotation. Heart Rhythm 2020; 17:881–8. https://doi.org/10.1016/j.hrthm.2020.02.015

  7. Jeon E, Oh K, Kwon S, Son H, Yun Y, Jung ES, et al. A lightweight deep learning model for fast electrocardiographic beats classification with a wearable cardiac monitor: development and validation study. JMIR Med Inform 2020; 8:e17037. https://doi.org/10. 2196/17037

  8. Breteler MJMM, Huizinga E, van Loon K, Leenen LPH, Dohmen DAJ, Kalkman CJ, et al. Reliability of wireless monitoring using a wearable patch sensor in high-risk surgical patients at a step-down unit in The Netherlands: a clinical validation study. BMJ Open 2018; 8:e020162. https://doi.org/10.1136/bmjopen-2017-020162

  9. Hopkins L, Stacey B, Robinson DBT, James OP, Brown C, Egan RJ, et al. Consumer-grade biosensor validation for examining stress in healthcare professionals. Physiol Rep 2020; 8:e14454. https://doi.org/10.14814/phy2.14454

  10. Steinhubl SR, Waalen J, Edwards AM, Ariniello LM, Mehta RR, Ebner GS, et al. Effect of a home-based wearable continuous ECG monitoring patch on detection of undiagnosed atrial fibrillation: the mSToPS randomized clinical trial. JAMA 2018; 320: 146–55. https://doi.org/10.1001/jama.2018.8102

  11. Elliot CA, Hamlin MJ, Lizamore CA. Validity and reliability of the hexoskin wearable biometric vest during maximal aerobic power testing in elite cyclists. J Strength Cond Res 2019; 33:1437–44. https://doi.org/10.1519/JSC.0000000000002005

  12. Eysenck W, Freemantle N, Sulke N. A randomized trial evaluating the accuracy of AF detection by four external ambulatory ECG monitors compared to permanent pacemaker AF detection. J Interv Card Electrophysiol 2020; 57:361–9. https://doi.org/10. 1007/s10840-019-00515-0

  13. Fabregat-Andres O, Munoz-Macho A, Adell-Beltran G, Ibanez-Catala X, Macia A, Facila L. Evaluation of a new shirt-based electrocardiogram device for cardiac screening in soccer players: comparative study with treadmill ergospirometry. Cardiol Res 2014; 5:101–7. https://doi.org/10.14740/cr333w

  14. Feito Y, Moriarty TA, Mangine G, Monahan J. The use of a smart-textile garment during high-intensity functional training: a pilot study. J Sports Med Phys Fitness 2019; 59: 947–54. https://doi.org/10.23736/S0022-4707.18.08689-9

  15. Pagola J, Juega J, Francisco-Pascual J, Moya A, Sanchis M, Bustamante A, et al. Yield of atrial fibrillation detection with textile wearable Holter from the acute phase of stroke: pilot study of crypto-AF registry. Int J Cardiol 2018; 251:45–50. https://doi. org/10.1016/j.ijcard.2017.10.063

  16. Lau JK, Lowres N, Neubeck L, Brieger DB, Sy RW, Galloway CD, et al. iphone ECG application for community screening to detect silent atrial fibrillation: a novel technology to prevent stroke. Int J Cardiol 2013; 165:193–4. https://doi.org/10.1016/j.ijcard. 2013.01.220

  17. Bumgarner JM, Lambert CT, Hussein AA, Cantillon DJ, Baranowski B, Wolski K, et al. Smartwatch algorithm for automated detection of atrial fibrillation. J Am Coll Cardiol 2018; 71:2381–8. https://doi.org/10.1016/j.jacc.2018.03.003

  18. Lubitz SA, Faranesh AZ, Atlas SJ, McManus DD, Singer DE, Pagoto S, et al. Rationale and design of a large population study to validate software for the assessment of atrial fibrillation from data acquired by a consumer tracker or smartwatch: the Fitbit heart study. Am Heart J 2021; 238:16–26. https://doi.org/10.1016/j.ahj.2021.04.003

  19. Perez MV, Mahaffey KW, Hedlin H, Rumsfeld JS, Garcia A, Ferris T, et al. Large-scale assessment of a smartwatch to identify atrial fibrillation. N Engl J Med 2019; 381: 1909–17. https://doi.org/10.1056/NEJMoa1901183

  20. Saghir N, Aggarwal A, Soneji N, Valencia V, Rodgers G, Kurian T. A comparison of manual electrocardiographic interval and waveform analysis in lead 1 of 12-lead ECG and apple watch ECG: a validation study. Cardiovasc Digit Health J 2020; 1: 30–6. https://doi.org/10.1016/j.cvdhj.2020.07.002

  21. Seshadri DR, Bittel B, Browsky D, Houghtaling P, Drummond CK, Desai MY, et al. Accuracy of apple watch for detection of atrial fibrillation. Circulation 2020; 141: 702–3. https://doi.org/10.1161/CIRCULATIONAHA.119.044126

  22. Zhang H, Zhang J, Li HB, Chen YX, Yang B, Guo YT, et al. Validation of single centre pre-mobile atrial fibrillation apps for continuous monitoring of atrial fibrillation in a real-world setting: pilot cohort study. J Med Internet Res 2019; 21:e14909. https:// doi.org/10.2196/14909

  23. Fan YY, Li YG, Li J, Cheng WK, Shan ZL, Wang YT, et al. Diagnostic performance of a smart device with photoplethysmography technology for atrial fibrillation detection: pilot study (Pre-mAFA II registry). JMIR Mhealth Uhealth 2019; 7:e11437. https://doi. org/10.2196/11437

  24. Brito R, Mondouagne LP, Stettler C, Combescure C, Burri H. Automatic atrial fibrillation and flutter detection by a handheld ECG recorder, and utility of sequential finger and precordial recordings. J Electrocardiol 2018; 51:1135–40. https://doi.org/10. 1016/j.jelectrocard.2018.10.093

  25. Desteghe L, Raymaekers Z, Lutin M, Vijgen J, Dilling-Boer D, Koopman P, et al. Performance of handheld electrocardiogram devices to detect atrial fibrillation in a cardiology and geriatric ward setting. Europace 2017; 19:29–39. https://doi.org/10. 1093/europace/euw025

  26. Nigolian A, Dayal N, Nigolian H, Stettler C, Burri H. Diagnostic accuracy of multi-lead ECGs obtained using a pocket-sized bipolar handheld event recorder. J Electrocardiol 2018; 51:278–81. https://doi.org/10.1016/j.jelectrocard.2017.11.004

  27. Magnusson P, Lyren A, Mattsson G. Diagnostic yield of chest and thumb ECG after cryptogenic stroke, Transient ECG Assessment in Stroke Evaluation (TEASE): an observational trial. BMJ Open 2020; 10:e037573. https://doi.org/10.1136/bmjopen-2020037573

  28. Carnlöf C, Schenck-Gustafsson K, Jensen-Urstad M, Insulander P. Instant electrocardiogram feedback with a new digital technique reduces symptoms caused by palpitations and increases health-related quality of life (the RedHeart study). Eur J Cardiovasc Nurs 2021; 20:402–10. https://doi.org/10.1093/eurjcn/zvaa031

  29. Haverkamp HT, Fosse SO, Schuster P. Accuracy and usability of single-lead ECG from smartphones—a clinical study. Indian Pacing Electrophysiol J 2019; 19:145–9. https:// doi.org/10.1016/j.ipej.2019.02.006

  30. Attia ZI, Kapa S, Lopez-Jimenez F, McKie PM, Ladewig DJ, Satam G, et al. Screening for cardiac contractile dysfunction using an artificial intelligence-enabled electrocardiogram. Nat Med 2019; 25:70–4. https://doi.org/10.1038/s41591-018-0240-2

  31. Bekker CL, Noordergraaf F, Teerenstra S, Pop G, van den Bemt BJF. Diagnostic accuracy of a single-lead portable ECG device for measuring QTc prolongation. Ann Noninvasive Electrocardiol 2020; 25:e12683. https://doi.org/10.1111/anec.12683

  32. Kaleschke G, Hoffmann B, Drewitz I, Steinbeck G, Naebauer M, Goette A, et al. Prospective, multicentre validation of a simple, patient-operated electrocardiographic system for the detection of arrhythmias and electrocardiographic changes. Europace 2009; 11:1362–8. https://doi.org/10.1093/europace/eup262

  33. Guan J, Wang A, Song W, Obore N, He P, Fan S, et al. Screening for arrhythmia with the new portable single-lead electrocardiographic device (SnapECG): an application study in community-based elderly population in Nanjing, China. Aging Clin Exp Res 2021; 33:133–40. https://doi.org/10.1007/s40520-020-01512-4

  34. Svennberg E, Stridh M, Engdahl J, Al-Khalili F, Friberg L, Frykman V, et al. Safe automatic one-lead electrocardiogram analysis in screening for atrial fibrillation. Europace 2017; 19:1449–53. https://doi.org/10.1093/europace/euw286

  35. Musat DL, Milstein N, Mittal S. Implantable loop recorders for cryptogenic stroke (plus real-world atrial fibrillation detection rate with implantable loop recorders). Card Electrophysiol Clin 2018; 10:111–8. https://doi.org/10.1016/j.ccep.2017.11.011

  36. Sakhi R, Theuns D, Szili-Torok T, Yap SC. Insertable cardiac monitors: current indications and devices. Expert Rev Med Devices 2019; 16:45–55. https://doi.org/10.1080/ 17434440.2018.1557046

  37. Tomson TT, Passman R. The reveal LINQ insertable cardiac monitor. Expert Rev Med Devices 2015; 12:7–18. https://doi.org/10.1586/17434440.2014.953059

  38. Ciconte G, Saviano M, Giannelli L, Calovic Z, Baldi M, Ciaccio C, et al. Atrial fibrillation detection using a novel three-vector cardiac implantable monitor: the atrial fibrillation detect study. Europace 2017; 19:1101–8. https://doi.org/10.1093/europace/ euw181

  39. Hindricks G, Pokushalov E, Urban L, Taborsky M, Kuck KH, Lebedev D, et al. Performance of a new leadless implantable cardiac monitor in detecting and quantifying atrial fibrillation: results of the XPECT trial. Circ Arrhythm Electrophysiol 2010; 3: 141–7. https://doi.org/10.1161/CIRCEP.109.877852

  40. Mittal S, Rogers J, Sarkar S, Koehler J, Warman EN, Tomson TT, et al. Real-world performance of an enhanced atrial fibrillation detection algorithm in an insertable cardiac monitor. Heart Rhythm 2016; 13:1624–30. https://doi.org/10.1016/j.hrthm.2016.05. 010

  41. Nölker G, Mayer J, Boldt LH, Seidl K VVAND, Massa T, Kollum M, et al. Performance of an implantable cardiac monitor to detect atrial fibrillation: results of the DETECT AF study. J Cardiovasc Electrophysiol 2016; 27:1403–10. https://doi.org/10.1111/jce. 13089

  42. Sanders P, Pürerfellner H, Pokushalov E, Sarkar S, Di Bacco M, Maus B, et al. Performance of a new atrial fibrillation detection algorithm in a miniaturized insertable cardiac monitor: results from the reveal LINQ usability study. Heart Rhythm 2016; 13:1425–30. https://doi.org/10.1016/j.hrthm.2016.03.005

ESC Guidelines 3411

  1. Chan PH, Wong CK, Poh YC, Pun L, Leung WW, Wong YF, et al. Diagnostic performance of a smartphone-based photoplethysmographic application for atrial fibrillation screening in a primary care setting. J Am Heart Assoc 2016; 5:e003428. https:// doi.org/10.1161/JAHA.116.003428

  2. Mc MD, Chong JW, Soni A, Saczynski JS, Esa N, Napolitano C, et al. PULSE-SMART: pulse-based arrhythmia discrimination using a novel smartphone application. J Cardiovasc Electrophysiol 2016; 27:51–7. https://doi.org/10.1111/jce.12842

  3. Proesmans T, Mortelmans C, Van Haelst R, Verbrugge F, Vandervoort P, Vaes B. Mobile phone-based use of the photoplethysmography technique to detect atrial fibrillation in primary care: diagnostic accuracy study of the FibriCheck app. JMIR Mhealth Uhealth 2019; 7:e12284. https://doi.org/10.2196/12284

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ESC Guidelines

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ESC Guidelines 3413

Atherosclerosis (MESA), and the Rotterdam study. J Am Heart Assoc 2016; 5:e002907. https://doi.org/10.1161/JAHA.115.002907

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ESC Guidelines

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  3. Chang SH, Wu LS, Chiou MJ, Liu JR, Yu KH, Kuo CF, et al. Association of metformin with lower atrial fibrillation risk among patients with type 2 diabetes mellitus: a population-based dynamic cohort and in vitro studies. Cardiovasc Diabetol 2014; 13: 123. https://doi.org/10.1186/s12933-014-0123-x

  4. Tseng CH. Metformin use is associated with a lower incidence of hospitalization for atrial fibrillation in patients with type 2 diabetes mellitus. Front Med (Lausanne) 2021; 7:592901. https://doi.org/10.3389/fmed.2020.592901

  5. Li WJ, Chen XQ, Xu LL, Li YQ, Luo BH. SGLT2 inhibitors and atrial fibrillation in type 2 diabetes: a systematic review with meta-analysis of 16 randomized controlled trials. Cardiovasc Diabetol 2020; 19:130. https://doi.org/10.1186/s12933-020-01105-5

  6. Srivatsa UN, Malhotra P, Zhang XJ, Beri N, Xing G, Brunson A, et al. Bariatric surgery to aLleviate OCcurrence of atrial fibrillation hospitalization—BLOC-AF. Heart Rhythm O2 2020; 1:96–102. https://doi.org/10.1016/j.hroo.2020.04.004

  7. Hoskuldsdottir G, Sattar N, Miftaraj M, Naslund I, Ottosson J, Franzen S, et al. Potential effects of bariatric surgery on the incidence of heart failure and atrial fibrillation in patients with type 2 diabetes mellitus and obesity and on mortality in patients with preexisting heart failure: a nationwide, matched, observational cohort study. J Am Heart Assoc 2021; 10:e019323. https://doi.org/10.1161/JAHA.120.019323

  8. Chokesuwattanaskul R, Thongprayoon C, Bathini T, Sharma K, Watthanasuntorn K, Lertjitbanjong P, et al. Incident atrial fibrillation in patients undergoing bariatric surgery: a systematic review and meta-analysis. Intern Med J 2020; 50:810–7. https:// doi.org/10.1111/imj.14436

  9. Lynch KT, Mehaffey JH, Hawkins RB, Hassinger TE, Hallowell PT, Kirby JL. Bariatric surgery reduces incidence of atrial fibrillation: a propensity score-matched analysis. Surg Obes Relat Dis 2019; 15:279–85. https://doi.org/10.1016/j.soard.2018.11.021

  10. Jamaly S, Carlsson L, Peltonen M, Jacobson P, Sjostrom L, Karason K. Bariatric surgery and the risk of new-onset atrial fibrillation in Swedish obese subjects. J Am Coll Cardiol 2016; 68:2497–504. https://doi.org/10.1016/j.jacc.2016.09.940

  11. Okin PM, Hille DA, Larstorp AC, Wachtell K, Kjeldsen SE, Dahlöf B, et al. Effect of lower on-treatment systolic blood pressure on the risk of atrial fibrillation in hypertensive patients. Hypertension 2015; 66:368–73. https://doi.org/10.1161/ HYPERTENSIONAHA.115.05728

  12. Wachtell K, Lehto M, Gerdts E, Olsen MH, Hornestam B, Dahlof B, et al. Angiotensin II receptor blockade reduces new-onset atrial fibrillation and subsequent stroke compared to atenolol: the Losartan Intervention for End point reduction in hypertension (LIFE) study. J Am Coll Cardiol 2005; 45:712–9. https://doi.org/10.1016/j.jacc.2004.10. 068

  13. Schmieder RE, Kjeldsen SE, Julius S, McInnes GT, Zanchetti A, Hua TA, et al. Reduced incidence of new-onset atrial fibrillation with angiotensin II receptor blockade: the VALUE trial. J Hypertens 2008; 26:403–11. https://doi.org/10.1097/HJH.0b013e 3282f35c67

  14. Schaer BA, Schneider C, Jick SS, Conen D, Osswald S, Meier CR. Risk for incident atrial fibrillation in patients who receive antihypertensive drugs: a nested case-control study. Ann Intern Med 2010; 152:78–84. https://doi.org/10.7326/0003-4819-152-2201001190-00005

  15. Dewland TA, Soliman EZ, Yamal JM, Davis BR, Alonso A, Albert CM, et al. Pharmacologic prevention of incident atrial fibrillation: long-term results from the ALLHAT (antihypertensive and lipid-lowering treatment to prevent heart attack trial). Circ Arrhythm Electrophysiol 2017; 10:e005463. https://doi.org/10.1161/ CIRCEP.117.005463

  16. Butt JH, Docherty KF, Jhund PS, de Boer RA, Böhm M, Desai AS, et al. Dapagliflozin and atrial fibrillation in heart failure with reduced ejection fraction: insights from DAPA-HF. Eur J Heart Fail 2022; 24:513–25. https://doi.org/10.1002/ejhf.2381

  17. Liu X, Liu H, Wang L, Zhang L, Xu Q. Role of sacubitril-valsartan in the prevention of atrial fibrillation occurrence in patients with heart failure: a systematic review and meta-analysis of randomized controlled trials. PLOS ONE 2022; 17:e0263131. https://doi.org/10.1371/journal.pone.0263131

  18. Hess PL, Jackson KP, Hasselblad V, Al-Khatib SM. Is cardiac resynchronization therapy an antiarrhythmic therapy for atrial fibrillation? A systematic review and meta-analysis. Curr Cardiol Rep 2013; 15:330. https://doi.org/10.1007/s11886-0120330-6

  19. Fatemi O, Yuriditsky E, Tsioufis C, Tsachris D, Morgan T, Basile J, et al. Impact of intensive glycemic control on the incidence of atrial fibrillation and associated cardiovascular outcomes in patients with type 2 diabetes mellitus (from the action to control cardiovascular risk in diabetes study). Am J Cardiol 2014; 114:1217–22. https://doi.org/10.1016/j.amjcard.2014.07.045

  20. Nantsupawat T, Wongcharoen W, Chattipakorn SC, Chattipakorn N. Effects of metformin on atrial and ventricular arrhythmias: evidence from cell to patient. Cardiovasc Diabetol 2020; 19:198. https://doi.org/10.1186/s12933-020-01176-4

  21. Chang CY, Yeh YH, Chan YH, Liu JR, Chang SH, Lee HF, et al. Dipeptidyl peptidase-4 inhibitor decreases the risk of atrial fibrillation in patients with type 2 diabetes: a nationwide cohort study in Taiwan. Cardiovasc Diabetol 2017; 16:159. https://doi.org/10. 1186/s12933-017-0640-5

  22. Ostropolets A, Elias PA, Reyes MV, Wan EY, Pajvani UB, Hripcsak G, et al. Metformin is associated with a lower risk of atrial fibrillation and ventricular arrhythmias compared with sulfonylureas: an observational study. Circ Arrhythm Electrophysiol 2021; 14:e009115. https://doi.org/10.1161/CIRCEP.120.009115

  23. Proietti R, Lip GYH. Sodium-glucose cotransporter 2 inhibitors: an additional management option for patients with atrial fibrillation? Diabetes Obes Metab 2022; 24: 1897–900. https://doi.org/10.1111/dom.14818

  24. Karamichalakis N, Kolovos V, Paraskevaidis I, Tsougos E. A new hope: sodiumglucose cotransporter-2 inhibition to prevent atrial fibrillation. J Cardiovasc Dev Dis 2022; 9:236. https://doi.org/10.3390/jcdd9080236

  25. Lee S, Zhou J, Leung KSK, Wai AKC, Jeevaratnam K, King E, et al. Comparison of sodium-glucose cotransporter-2 inhibitor and dipeptidyl peptidase-4 inhibitor on the risks of new-onset atrial fibrillation, stroke and mortality in diabetic patients: a propensity score-matched study in Hong Kong. Cardiovasc Drugs Ther 2023; 37: 561–9. https://doi.org/10.1007/s10557-022-07319-x

  26. Elliott AD, Maatman B, Emery MS, Sanders P. The role of exercise in atrial fibrillation prevention and promotion: finding optimal ranges for health. Heart Rhythm 2017; 14: 1713–20. https://doi.org/10.1016/j.hrthm.2017.07.001

  27. Newman W, Parry-Williams G, Wiles J, Edwards J, Hulbert S, Kipourou K, et al. Risk of atrial fibrillation in athletes: a systematic review and meta-analysis. Br J Sports Med 2021; 55:1233–8. https://doi.org/10.1136/bjsports-2021-103994