Key result
Repeat AF ablation carries a ~20% recurrence rate driven by pulmonary vein reconnection.
Why the study?
Catheter ablation is a key treatment for AF, but recurrence often requires repeat procedures, prompting an evaluation of repeat ablation efficacy focusing on technique, anatomical targets, and PV reconnection.
What is the efficacy and recurrence rate of repeat catheter ablation for recurrent atrial fibrillation?
Meta-Analysis
What is the efficacy and recurrence rate of repeat catheter ablation for recurrent atrial fibrillation?
Repeat ablation for atrial fibrillation has a recurrence rate of approximately 20.3%, primarily driven by pulmonary vein reconnection, with strategies like CBA followed by RFA showing favorable outcomes.
Answers are grounded in this paper and cite their sources.
Supports repeat ablation for recurrent AF; extends evidence on optimal techniques and PV targets.
Background: Catheter ablation is a key treatment for atrial fibrillation (AF); however, recurrence often requires repeat procedures. This meta-analysis evaluates the efficacy of repeat ablation for recurrent atrial arrhythmia, focusing on ablation technique, anatomical targets, and pulmonary vein (PV) reconnection. Methods: A systematic literature search of MEDLINE, Scopus, and Cochrane Central Register of Controlled Trials was conducted on studies assessing repeat and initial ablation outcomes until February 2025. Data on atrial arrhythmia recurrence, ablation technique, targets, and PV reconnection were extracted. A random-effects model meta-analysis was used to estimate the pooled recurrence rate after repeat ablation. Conclusions: Repeat ablation for AF was associated with the risk of recurrence, mainly due to PV reconnection. Strategies involving CBA followed by RFA and PVI-based approaches showed favorable outcomes, while lower reconnection rates in left-sided PVs, especially the LIPV, highlighting the need for optimized techniques.
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Deepan et al. (2026) conducted a meta-analysis in Atrial fibrillation. Repeat catheter ablation vs. Initial ablation was evaluated on Atrial arrhythmia recurrence. Repeat catheter ablation for atrial fibrillation was associated with a pooled recurrence rate of 20.3%, mainly due to pulmonary vein reconnection.
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