Being overweight has been associated with arrhythmia recurrence after atrial fibrillation (AF) ablation, but the optimal threshold to identify high risk patients has not been well established. Studies investigating the relationship between underweight and ablation outcome are also limited. This study aimed to investigate the impact of body mass index (BMI) on the recurrence after AF ablation and to determine the optimal cut-off of BMI to identify patients at risk of recurrence.
