Impact of catheter design on lesion dimensions during focal-bipolar pulsed field ablation: an in vitro potato model study

Pulsed field ablation (PFA) is a novel technique for pulmonary vein isolation (PVI) in the treatment of atrial fibrillation (AF). However, the impact of electrode type on lesion formation at fixed PFA parameters remains unknown. This study investigated differences in lesion characteristics when using a 4 mm non-irrigated catheter versus an open-irrigated flexible-tip catheter in focal-bipolar PFA in a potato model. PFA applications were performed in a potato model using a purpose-made PFA genera