PO-02-092 POSTERIOR WALL ISOLATION VIA A MULTI-ELECTRODE RADIOFREQUENCY BALLOON CATHETER: FEASIBILITY, TECHNICAL CONSIDERATIONS, ENDOSCOPIC FINDINGS, AND COMPARISON WITH CRYOBALLOON TECHNOLOGIES

Posterior Wall (PW) isolation is an important adjunctive ablation target in patients with non-paroxysmal atrial fibrillation (AF). Traditionally performed point-by-point radiofrequency ablation, PW can be also achieved different cryoballoon technologies. To assess the feasibility of novel RF balloon catheter and perform a comparison We prospectively enrolled 35 consecutive persistent AF scheduled for first-time Heliostar device. Procedural data were compared those from 100 undergoing pulmonary vein (PV) plus cryoablation The ratio balloon/cryoballoon was 1:3 each operator involved study, aiming at avoiding any imbalance related to experience. Single-shot PV significantly higher number cases technology (92.6% vs 72.5%; p<0.001). similar applications (11±4 versus 11±2 cryoballoon; p=0.36) but significant shorter time among (225±83s 1273±280s Primary safety endpoint occurred none 10 (12.5%; 8 transient phrenic nerve palsies, 1 major groin hematoma, femoral pseudoaneurism) group (p=0.06). efficacy all (100%) 75 (93.7%) Cryoballoon ones (p=0.37). Oesophageal endoscopy did not show signs thermal lesions luminal temperature rise. balloon-based safe promoted procedural times cryoballoon-based procedures.