To study the determinants of reverse remodeling of the LA after rhythm control therapy, all patients underwent echocardiography 6 months after CA. To ensure the same duration of sinus rhythm, patients undergoing cardioversion for AF during the blanking period underwent echocardiography 6 months after the last cardioversion. The study population was divided into 2 groups according to the extent of the decrease in LA volume index. LA reverse remodeling was defined as a ≥15% reduction in LA volume index at 6 months after CA.16