1. Eran Leshem et al. JACEP 2018;j.jacep.2017.11.018
Comparison Between Standard Ablation and High-Power, Short-Duration Ablation Schematic illustration of radiofrequency ablation and temperature distribution in homogenous tissue. (A) Radiofrequency ablation at standard setting (25 W for 20 s) results in maximal tissue heating immediately under the catheter tip because of resistive heating (bright red circle). This zone of maximal heating serves as a heat source for passive heating of deeper layers during the conductive phase. In standard ablation using moderate power and relatively long duration, tissue is largely heated because of conductive heating (curved arrows). (B) Presumed effect of high-power and short-duration ablation. A burst of high-power energy results in a larger zone that is heated directly from the catheter during the resistive phase (bright red circles). Because the ablation duration is much shorter, temperature decay is also significantly shorter, restricting further conduction of heat. The bidirectional arrows represent tissue temperature ≥50°C, suggestive of an approximated similar depth of permanent injury (modified from an illustration by Joshua M. Cooper, MD).
Eran Leshem et al. JACEP 2018;j.jacep
2018 American College of Cardiology Foundation