美国Price等研究表明,对于无保护左主干远段病变,置入西罗莫司洗脱支架安全可行,但是连续的造影随访往往会发现存在再狭窄现象,常会累及左回旋支(LCX)开口,再狭窄多为局灶性,并且患者通常无症状。尽管西罗莫司洗脱支架逐渐被应用于无保护左主干病变,但这一做法尚缺乏数据以证明 US Price and other studies have shown that the left main distal unprotected lesions, safe and feasible placement of sirolimus-eluting stent, but continuous angiographic follow-up often found to be restenosis phenomenon, often involving the left circumflex artery (LCX) opening, Restenosis is mostly focal and the patient is usually asymptomatic. Although sirolimus-eluting stents are increasingly being applied to unprotected left main disease, this practice is still lacking in data to demonstrate