[Mechanism and re-ablation strategy for postablation atrial tachyarrhythmia in atrial fibrillation patients].

Objective: To investigate the mechanism and re-ablation strategy of recurrent atrial tachyarrhythmia (ATA) following circumferential ablation of pulmonary veins (PV) in patients with atrial fibrillation (AF).

Methods: Fifteen patients with recurrent ATA following first AF ablation procedure were included in this study. Under CARTO guidance, PVs were remapped and ablated subsequently for relapse of left atrium to PV conduction.