冠状动脉支架术后再狭窄发生机制的血管内超声观察

冠状动脉支架术后再狭窄发生机制的血管内超声观察 作者：李俊峡，鹰津良树，宫本忠司，永井康三，加藤贵雄 【关键词】 超声检查,介入性；冠状血管造影术；冠状动脉再狭窄；支架 【Abstract】 AIM: To investigate the instent restenosis process by coronary artery angiography (CAG) and intravascular ultrasound(IVUS). METHODS: The study consisted of 92 patients with 118 stents(LAD53, LCX32, RCA33). Followup CAG and IVUS were performed 6 months after stent placement. There were 39 stents with and 79 stents without instent restenosis by CAG. The reference areas, minimal stent crosssectional areas(CSA), minimal stent luminal CSA, intimal hyperplasia CSA, stent lumen and intimal hyperpla volume were measured by IVUS. RESULTS: Reference areas, minimal stent CSA and stent volume had no significant differences between restenotic and nonrestenotic stents(P