Catheter ablation in adults under 40 with atrial fibrillation achieved an 82% single-procedure success rate, with persistent AF (HR 3.2) and obesity (HR 2.5) independently predicting recurrence.
Cohort (n=112)
Yes
Does catheter ablation prevent atrial fibrillation recurrence in adults under 40 years of age?
Catheter ablation is a safe and highly effective rhythm-control strategy for adults under 40 with atrial fibrillation, though persistent AF and obesity increase the risk of recurrence.
Abstract Background Atrial fibrillation (AF) in young adults presents a unique clinical challenge, yet comprehensive data on its specific phenotype and long-term outcomes following catheter ablation are scarce. A detailed understanding of this population is essential to refine therapeutic strategies. Methods In a multicenter, retrospective cohort study, we analyzed 112 consecutive patients aged 40 years diagnosed with AF. We collected comprehensive baseline characteristics, management strategies, and procedural details. The primary endpoint was freedom from AF recurrence (any episode 30 seconds) after the 3-month blanking period. Multivariable Cox proportional hazards regression was used to identify independent predictors of recurrence. Results The cohort (mean age 34 ± 4 years, 72% male) was characterized by a high prevalence of modifiable risk factors, with a mean BMI of 26.1 ± 4.8 kg/m². The majority (81%) had no structural heart disease, and 14% reported a familial AF history. Catheter ablation was the initial rhythm-control strategy in 54% of patients (n=61), utilizing cryoballoon (64%) and radiofrequency (36%) approaches with comparable safety profiles. Over a median follow-up of 28 months (IQR 18–45), single-procedure success was 82%, increasing to 91% after repeat ablation. Persistent AF (HR 3.2, 95% CI 1.2–8.9; p=0.02) and Obesity (BMI 30) (HR 2.5, 95% CI 1.1–5.8; p=0.03) were independent predictors of recurrence. No major procedural complications occurred. Conclusion In adults under 40, AF is largely a disorder of otherwise healthy individuals, driven by modifiable factors, and is highly amenable to catheter ablation. Both cryoballoon and radiofrequency ablation are safe and effective, offering durable long-term rhythm control. The identification of persistent AF and obesity as key predictors of recurrence highlights a critical subgroup that would benefit from earlier intervention and aggressive risk-factor modification to optimize outcomes.
Bakytzhanuly et al. (Mon,) conducted a cohort in Atrial fibrillation (n=112). Catheter ablation was evaluated on Freedom from AF recurrence (any episode >30 seconds) after the 3-month blanking period. Catheter ablation in adults under 40 with atrial fibrillation achieved an 82% single-procedure success rate, with persistent AF (HR 3.2) and obesity (HR 2.5) independently predicting recurrence.