尽管药物涂层支架较金属裸支架可以明显降低再狭窄率,但随着临床中的广泛应用,药物支架术后亦有10%发生支架内再狭窄,具体机制不明,主要与介入手术操作和涂层药物、支架本身等有关,多发生支架内局限性狭窄,亦有弥漫病变,最佳治疗手段尚存在争议,再次药物支架置入及血管内放射治疗等都是不错的选择。 Although drug-coated stents can significantly reduce the rate of restenosis compared with bare metal stents, stent restenosis also occurs in 10% of drug-eluting stents with widespread use in the clinic. The specific mechanism is unknown. Layer of drugs, the stent itself and so on, the occurrence of limited stent stenosis, there are diffuse lesions, the best treatment is controversial, and again drug stent placement and intravascular radiation therapy are all good choices.