Abstract
Pulmonary vein isolation (PVI) with second- generation cryoballoon is known to be associated with higher phrenic nerve palsy (PNP) incidence when compared with first- generation cryoballoon. Identification of spatial neighbouring of phrenic nerves is important to reduce the likelihood of PNP. In first- generation cryoballoon, the distance between right upper pulmonary vein (RUPV) ostium and right pericardiophrenic artery (RPA) was found to be related with PNP. The purpose of our study is to evaluate the impact of this distance on PNP incidence in patients undergoing PVI with first- and second- generation cryoballoon.
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