Objectives
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.
Methods
249 AF patients who were were evaluated with cardiac computed tomography prior to cryoballoon- based PVI (55.6± 10.7 years, 47.8% male, 34.9% second- generation cryoballoon) were included the study. The location of the RPA was identified on axial images and distance to the RUPV ostium was measured in 3- dimensional reconstruction.
Methods
249 AF patients who were were evaluated with cardiac computed tomography prior to cryoballoon- based PVI (55.6± 10.7 years, 47.8% male, 34.9% second- generation cryoballoon) were included the study. The location of the RPA was identified on axial images and distance to the RUPV ostium was measured in 3- dimensional reconstruction.
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