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Updated: Nov 15, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

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Catheter ablation for atrial fibrillation in patients with congestive heart failure

Giichi Nitta1, Osamu Inaba1, Shunichi Kato1

  • 1Department of Cardiology, Japanese Red Cross Saitama Hospital, 1-5 Shintoshin, Chuo-ku, Saitama 330-8553, Japan.

International Journal of Cardiology
|March 1, 2021
PubMed

Insights

Catheter ablation for atrial fibrillation (AF) shows similar 1-year success rates in patients with and without congestive heart failure (CHF). However, patients with arrhythmia-induced cardiomyopathy experienced better outcomes post-ablation.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Management

Background:

  • Atrial fibrillation (AF) is a common arrhythmia.
  • Congestive heart failure (CHF) is a significant comorbidity affecting AF patients.
  • Catheter ablation (CA) is a treatment option for AF.

Purpose of the Study:

  • To evaluate the 1-year success rate of catheter ablation (CA) for atrial fibrillation (AF).
  • To compare CA success rates in patients with and without congestive heart failure (CHF).
  • To assess outcomes in different subgroups of CHF patients undergoing CA.

Main Methods:

  • A retrospective matched-pair cohort study involving 3,018 AF patients who underwent initial CA.
  • 227 pairs of patients with (CHF group) and without CHF (control group) were matched using propensity scores.
  • Subgroup analysis within the CHF group included arrhythmia-induced cardiomyopathy (AIC) and non-AIC patients.

Main Results:

  • 1-year AF-free survival was similar between CHF and control groups.
  • Arrhythmia-induced cardiomyopathy (AIC) patients showed significantly better survival than non-AIC patients.
  • Clinical outcomes including left ventricular ejection function improved significantly, with greater improvement in the AIC group.

Conclusions:

  • Catheter ablation for AF demonstrates comparable 1-year success rates in patients with and without CHF.
  • Patients with arrhythmia-induced cardiomyopathy (AIC) experience superior outcomes after CA compared to those with other heart conditions.
  • Significant improvements in CHF clinical outcomes were observed post-ablation.
Abstract

Keywords:
Arrhythmia-induced cardiomyopathyAtrial fibrillationCatheter ablationHeart failureSuccess rate

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