Incidence, predictors, and clinical impact of tissue prolapse after stent implantation for saphenous vein graft disease: Intravascular ultrasound study

摘要

Previous studies have shown that tissue prolapse (TP) was not associated with long-term clinical outcome, but it might be related to myonecrosis after stenting for long lesions with unstable plaque morphometry (plaque rupture and positive remodeling) in native coronary arteries [1-3]. However, the incidence and predictors of TP and its clinical impact after stent implantation for saphenous vein graft (SVG) lesions are unknown. This study was the retrospective single-center study. 311 patients with 311 SVG lesions in the Washington Hospital Center between June 2000 and December 2005 were included for the analyses. Soft plaque was less bright than the adventitia. Stent expansion was calculated as minimum stent area divided by mean reference lumen area. TP was defined as tissue extrusion through the stent strut at post-procedure. We examined major adverse cardiac events (death, myocardial infarction, target vessel revascularization) at 5-year after stent implantation for SVG lesions.