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Should We Perform Catheter Ablation for Asymptomatic Atrial Fibrillation?

Jonathan M Kalman1, Prashanthan Sanders2, Raphael Rosso2

  • 1From Department of Cardiology, Royal Melbourne Hospital, Parkville, Australia (J.M.K.); Faculty of Medicine, Dentistry, and Health Sciences, University of Melbourne, Australia (J.M.K.); Centre for Heart Rhythm Disorders, South Australian Health and Medical Research Institute, University of Adelaide and Royal Adelaide Hospital, Australia (P.S.); Department of Cardiology, Tel Aviv Sourasky Medical Center, Sackler School of Medicine, Tel Aviv University, Israel (R.S.); and Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, MD (H.C.). jon.kalman@mh.org.au.

Circulation
|August 2, 2017
PubMed

Insights

Catheter ablation effectively maintains sinus rhythm for atrial fibrillation (AF) patients. Current evidence, however, doesn't confirm mortality benefits over rate control, leaving ablation primarily indicated for symptomatic individuals.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Device Technology

Background:

  • Catheter ablation is superior to drug therapy for maintaining sinus rhythm in atrial fibrillation (AF) patients.
  • No randomized trials have demonstrated mortality or stroke reduction with ablation versus rate control.
  • Current guidelines limit AF ablation indications to symptomatic patients, excluding up to 40% who are asymptomatic.

Purpose of the Study:

  • To evaluate the existing data supporting atrial fibrillation ablation in asymptomatic patients in 2017.
  • To assess the evidence base for rhythm control strategies in asymptomatic individuals with AF.

Main Methods:

  • Review of existing studies and data on atrial fibrillation ablation.
  • Analysis of evidence for rhythm control versus rate control in asymptomatic AF populations.
  • Assessment of guideline recommendations in the context of available data.

Main Results:

  • Numerous studies confirm catheter ablation's efficacy in maintaining sinus rhythm compared to pharmacological therapy.
  • No randomized trials have yet proven a mortality or stroke reduction benefit for ablation over rate control.
  • A significant portion of the AF population remains asymptomatic, with limited evidence for ablation in this group.

Conclusions:

  • While catheter ablation is effective for rhythm control in symptomatic AF, its benefit in asymptomatic patients requires further investigation.
  • Ongoing randomized trials are crucial to determine mortality and stroke reduction benefits.
  • Current evidence does not definitively support ablation in asymptomatic atrial fibrillation patients outside of symptom-based indications.

Keywords:
atrial fibrillationcatheter ablationheartmortalitystroke

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