Close the gap to get a circle ! The role of visual gaps during circumferential pulmonary vein isolation.

摘要

Since Michel Haissaguerre in the late 1990 delineated the importance of pulmonary vein (PV) triggers and drivers in the pathogen-esis of atrial fibrillation (AF), PV isolation has become the cornerstone of successful interventional treatment of AF.1 Initially, segmental or focal PV disconnection was the main treatment strategy. With the awareness of the role of PV antra in the initiation and maintenance of AF, ablation targets have moved away from isolating PVs inside the atria. Nowadays, circumferential ablation around PVs is the main approach.