经皮冠状动脉腔内成形术(PTCA)后再狭窄的发病因素是多方面的。其主要机制为扩张动脉段的管腔炎症反应、血管内皮损伤及功能紊乱诱发的血管平滑肌细胞(VSMC) The incidence of restenosis following percutaneous transluminal coronary angioplasty (PTCA) is multifactorial. The main mechanism for the expansion of the arterial vascular luminal inflammation, vascular endothelial injury and dysfunction-induced vascular smooth muscle cells (VSMC)