Key result
Weight loss reduces post-ablation AF recurrence by ~57% versus control.
Why the study?
Obesity is a strong risk factor that affects atrial fibrillation prognosis, but the role and potential dose-response relationship of weight loss on post-ablation outcomes remain unclear.
Does weight loss reduce atrial fibrillation recurrence in obese patients undergoing atrial fibrillation ablation?
Population
1283 patients with mean BMI over 30 kg/m 2 undergoing AF ablation
Comparison
Weight loss vs control
Authors
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Supports pre-ablation weight loss counseling in obese AF patients; extends observational data but leaves causality and practice change open pending RCTs.
Meta-Analysis (n=1,283)
Does weight loss reduce atrial fibrillation recurrence in obese patients undergoing atrial fibrillation ablation?
Effect estimate: RR 0.43 (95% CI 0.22-0.81)
Weight loss, particularly a reduction of 10% or more, is associated with a significantly decreased risk of atrial fibrillation recurrence after catheter ablation in obese patients.
Zhao et al. (2023) conducted a meta-analysis in Atrial fibrillation undergoing ablation (n=1,283). Weight loss vs. Control group (no weight loss or stable weight) was evaluated on Atrial fibrillation recurrence after ablation (RR 0.43, 95% CI 0.22-0.81). Weight loss significantly reduced the risk of atrial fibrillation recurrence after ablation compared to control (RR 0.43), with each 10% reduction in weight associated with a decreased risk (RR 0.54).
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