PO-05-041 CATHETER ABLATION OF VT USING THE QDOT MICRO CATHETER – A PROPENSITY-MATCHED DUAL-CENTER COMPARISON WITH THE THERMOCOOL SMARTTOUCH CATHETER

Catheter ablation is a pivotal treatment option for patients with recurrent ventricular tachycardia (VT) and electrical storm (ES). There no published data on the safety efficacy of catheter VT using recently introduced QDOT Micro (QDOT, BW) catheter, concerning direct comparison different technologies in this setting are scarce. To assess outcomes CA structural heart disease by comparing them to those observed Thermocool Smarttouch (TC-ST, catheter. We conducted dual-center, observational, prospective study including VT/ES undergoing For comparison, 1:1 propensity score matching was performed identify who underwent TC-ST nearest neighbor method. Propensity based gender, age, etiology disease, left ejection fraction, storm, number previous CAs VT. The primary outcome freedom from VT, as assessed implantable defibrillator (ICD) interrogation; in-hospital complications. Forty were included analysis n=20; TC-ST, n=20); baseline clinical characteristics similar two groups (Table), although use associated shorter procedural duration higher power settings. After median follow-up 7 months, survival free any measured 74 (95% CI, 57-97)% 69 51-93)% groups, respectively (log-rank p=0.54, Figure A), while ICD shocks 95 86-100)% versus 84 69-100)% p=0.26, B). major complications group, three (15%) had event (p=0.23; femoral pseudoaneurysm, n=1; cardiac tamponade, aortic cusp perforation, n=1). In cohort or ES, novel compared Remarkably, supporting device milieu.