Conclusions
In this initial study, we demonstrate that endocardial ablation can be performed safely and effectively using a novel family of bipolar, single-shot, spiral PFA/mapping catheters. Furthermore, this PFA system allows for creation of wide, transmural lesions within the atria and durable PV isolation without significant skeletal muscle twitch/activation, thromboembolism, collateral injury to the PN or bronchi or long-term abnormalities in the adjacent esophagus when manually deviated to render contiguous with the site of the energy source.