AB-452642-4 PULMONARY VEIN STENOSIS AFTER CATHETER ABLATION OF ATRIAL FIBRILLATION USING A CRYOBALLOON, HOTBALLOON, OR LASER BALLOON

Severe pulmonary vein (PV) stenosis after PV isolation for atrial fibrillation (AF) is a severe complication that requires angioplasty. However, there have been no studies to compare the incidence of among several balloon-type ablations. This study aimed reduction cross-sectional area and cryoballoon (CB)-PVI, hot balloon-PVI (HB), or laser balloon (LB)-PVI. A total 320 patients who underwent an initial catheter ablation procedure AF using CB, HB, LB in two hospitals were included. They contrast-enhanced multidetector computed tomography before three months procedure. In all 4 PVs, was more significant group than CB HB groups, respectively. (Figure A) Moderate-severe(>50%) severe(>75%) observed 5.1% 0.5% The moderate-severe higher groups (8.7%, 4.5%, 6.1% LB, respectively; P=0.03, Figure B). On other hand, similar (0.3%, 0.5%, 1.0% P=0.46). Symptomatic requiring intervention occurred one patient HB-PVI. application time, greater power, use 3rd-generation associated with stenosis. While LB-PVI CB-PVI HB-PVI, groups. Excessive time output