Lessons From Radiofrequency Redo-Procedure After Cryoballoon Pulmonary Vein Isolation for Paroxysmal Atrial Fibrillation

Abstract

Atrial arrhythmia recurrences following cryoballoon PVI were associated with focal PV reconnections, occurring at preferential anatomical sites. These gaps were readily ablated with focal radiofrequency delivery, explaining the lack of need of 3-D mapping system and short procedure time. These results do not support the use of cryoballoon to perform redo procedures.