Predictors of durable electrical isolation in the setting of second-generation cryoballoon ablation: A comparison between left superior, left inferior, right superior, and right inferior pulmonary veins.

Freezing behavior and reconnection rates differ significantly among the four PVs. Freezing temperature parameters strongly predict late PVr in superior PVs and are slightly different in RIPV but can be applied as well. LIPV freezing behavior is the most different. Its reconnection is uncommon even in the subset of worse freezing temperatures and specific CB predictors cannot be identified.