Pulsed Field Ablation Terminated Atrial Fibrillation Triggered by Persistent Left Superior Vena Cava: A Case Report.

A 73-year-old patient with paroxysmal atrial fibrillation (AF) and a history of two ablation procedures was referred to our center due to recurrence. Persistent left superior vena cava (PLSVC) was revealed in preprocedural echocardiography and computed tomography. A circular array Pulsed Field Ablation (PFA) catheter was applied for the re-intervention. Incessant AF was induced during the procedure. PFA successfully terminated AF within the distal part of PLSVC, where high-frequency fragmented electrograms were found, demonstrating the efficacy of circular array PFA catheter for the ablation within PLSVC.