Safety aspects of very high power very short duration atrial fibrillation ablation using a modified radiofrequency RF-generator: Single-center experience.

AF ablation using 90 W vHPvSD with a specialized ablation catheter in conjunction with a recently modified RF generator was associated with no EDEL in the whole study cohort and 26% SCEs in a subgroup of patients undergoing acute postablation cerebral MRI. Accordingly, to our previously published results, a relevant number of catheter tip coagulations was identified in this patient cohort even after modifications of the RF generator. The vHPvSD ablation technique using the present and the previous generator seems to be associated with a very low rate of esophageal injury. However, the recently revised generator software also produced a relevant number of catheter tip coagulum formation and SCEs.