1. Eran Leshem et al. JACEP 2018;j.jacep.2017.11.018
Comparison of Right Atrial Lines Between HP-SD and Standard Ablation (A) Representative example of an anatomic map of the right atrium with 2 parallel ablation lines and encirclement of the superior vena cava. (B, C) Representative examples of 2 parallel lines made with HP-SD ablation (90 W/4 s) and standard ablation (25 W/20 s). In both examples HP-SD ablation resulted in contiguous lines without apparent gaps. In contrast, lines made with standard ablation were narrower on the endocardial surface, composed of distinct lesions, and had evidence of visual gaps. (C) Level of section for histopathologic review: solid orange line in a zone of grossly ablated tissue in both lines; and dashed orange line in a zone of gross gap in the standard ablation line. (D, solid orange line in C) Two distinct lesions, corresponding to ablation lines made with HP-SD ablation (arrowhead) and standard ablation (star). Both lesions are transmural. (E, dashed orange line in C) Distinct transmural lesion made with HP-SD ablation line (arrowhead) with transmural necrotic myocardium (yellow line) and involvement of epicardial fat (asterisks) and nerves (arrows); no evidence is apparent of an ablation lesion in the standard ablation line (star) at this level. HP-SD = high power, short duration; IVC = interior vena cava; SVC = superior vena cava. See also Online Video 1.
Eran Leshem et al. JACEP 2018;j.jacep
2018 American College of Cardiology Foundation