Fig. 4

Kaplan–Meier survival curve for recurrence of atrial tachyarrhythmia according to the ablation strategies. Pulmonary vein isolation plus additional ablation did not influence the recurrence of AF in the patients with paroxysmal AF (A). However, it affected lower AF recurrence rate in the patients with persistent AF (B). AF, atrial fibrillation; PVI, pulmonary vein isolation