Figure 1. Conceptual difference in lesion formation between low-power, long duration ablation (LPLD, top row) and high-power, short duration ablation (HPSD, bottom row). In LPLD lesions, there is significantly more conductive heating leading to a wider area of reversible injury and deeper lesion formation. In contrast, HPSD relies mostly on resistive heating from the catheter-tissue interface, with much less reversible injury and potentially wider, shallower lesion formation. (Modified with permission from Barkagan M, Contreras-Valdes FM, Leshem E, Buxton AE, Nakagawa H, Anter E. High-power and short-duration ablation for pulmonary vein isolation: Safety, efficacy, and long-term durability. J Cardiovasc Electrophysiol. 2018; 29(9):1287-1296.)