Effect of Extensive Ablation on Recurrence in Patients with Persistent Atrial Fibrillation Treated with Pulmonary Vein Isolation -a Multicenter, Randomized, Open-Label, Non-Inferiority Study-

INTERVENTION: Group A: Pulmonary vein isolation Group B: Pulmonary vein isolation with extensive ablations CONDITION: Persistent atrial fibrillation PRIMARY OUTCOME: the one‐year recurrence rate of atrial fibrillation following the first session of catheter ablation SECONDARY OUTCOME: cardiovascular events:; death (and/or cause of death), symptomatic cerebral infarction, the recurrence rate of atrial fibrillation following multiple ablations; complications associated with catheter ablation; Total energy; procedure time; and QOL score assessed by SF‐36 INCLUSION CRITERIA: Patients undergoing a first‐time ablation procedure for persistent atrial fibrillation