1. Eran Leshem et al. JACEP 2018;j.jacep.2017.11.018
Histopathologic Analysis of SVC Lines With High-Power, Short-Duration, and Standard Ablation Mason trichrome staining at the level of the right atrial–SVC. (A) Representative example of an SVC encircling line made with standard ablation (25 W/20 s). It demonstrates areas of transmural myocardial damage (black ellipse) along with areas of spared myocardium with minimal and nontransmural damage (arrows). (B) Representative example of an SVC encircling line made with high-power and short-duration (90 W/4 s). This demonstrates a continuous band of transmural injury (yellow line) with involvement of immediately adjacent connective tissue, fat, and nerves. The remaining part of the vein circumference shows vascular collagen without muscular involvement. (C) Higher magnification (×100) of the area marked with rectangle in B, displaying transmural myocardial necrosis with evidence of interstitial collagen degeneration. Abbreviation as in Figure 5.
Eran Leshem et al. JACEP 2018;j.jacep
2018 American College of Cardiology Foundation