巴西学者Qu izhpe等研究认为,经皮冠状动脉大血管置入支架风险较低,并且风险与支架的类型无关。以往研究表明,PC I术后再狭窄发生率跟血管大小相关,裸支架置入后,越小的血管增生越明显,再狭窄发生率越高。另外,近年也发现,药物洗脱支架可显著减少再狭窄发生和再次血运重建。然 The Brazilian scholar Qu izhpe and other studies believe that percutaneous coronary artery blood vessels into the stent at a lower risk, and the risk is not related to the type of stent. Previous studies have shown that the incidence of PC I restenosis associated with the size of the blood vessels, bare stent implantation, the smaller the more obvious vascular proliferation, the higher the incidence of restenosis. In addition, it has also been found in recent years that drug-eluting stents can significantly reduce restenosis and revascularization. Of course