Blocking the Pulmonary Vein to Left Atrium Conduction in Addition to the Entrance Block Enhances Clinical Efficacy in Atrial Fibrillation Ablation

Abstract

Unidirectional entrance block with SAs in PVs may not be a good indication of complete PV isolation. Bidirectional block of the PV-LA junction can reduce the acute PV reconnection and may reduce the chronic AF recurrence in patients undergoing circumferential PV isolation.