PO-01-091 VEIN OF MARSHALL ETHANOL ABLATION AND LATERAL MITRAL ISTHMUS LINE TO IMPROVE EFFICACY OF PERSISTENT AF ABLATION

The optimal approach to ablation of persistent AF has not been well-established, and current strategies are only modestly successful. To assess the efficacy additional vein Marshall (VOM) ethanol lateral mitral isthmus in addition standard using a stepwise approach. Sixty -Five consecutive patients undergoing for were included. . All underwent PVI with RF ,left atrial roof confirmed line block, cavotricuspid performed. VOM concomitant annular ( from LA endocardium Coronary sinus as needed) achieve block attempted all patients. Patients follow-up ambulatory monitoring -office telephonic closed health delivery system at least 12 months f/u procedure. A total 38 65 had successful Vom injection. .35 these achieved block. 27 did receive therapy due venous collateralization (29)%, inability cannulate, vessel (29%) identified (19%) target dissection or extravasation (23%.) With an average follow up months, 82% clinical arrhythmia- free survival. In unsuccessful attempt, arrhythmia survival was 58%. off antiarrhythmic drugs, one One patient readmitted pericarditis without effusion managed colchicine. is associated improved arrhythmia-free ablation.