Effects of Circumferential Ostial Radiofrequency Lesions on Pulmonary Vein Activation Recorded with a Multipolar Basket Catheter

Abstract

Anatomically guided, circumferential lesions around the PV ostia resulted in isolation in only 46% of the veins. At 12 months, 62% of the patients were free of AF without antiarrrhythmic drug treatment, however, 6 patients (18%) developed left atrial flutter.