104例冠状动脉血管内支架置入术后的血管造影随访研究

Angiographic follow-up of 104 cases with coronary stent implantation

目的探讨影响冠状动脉内支架植入术后再狭窄的因素。方法对2001-2003年成功接受冠状动脉内支架植入术后患者进行定量冠状动脉造影,分析冠状动脉狭窄程度、病变长度及血管直径参数的影响。结果104例病人的138处病变植入152个支架,再狭窄率为35.5%。再狭窄组病变血管植入支架的长度(22±6)mm明显大于非再狭窄组(18±6)mm,(P<0.001)。短支架的再狭窄率显著小于长支架及植入多个支架者(P<0.01)。再狭窄组直径小于3.0mm中小血管的比例明显多于非再狭窄组。BX支架的再狭窄率最高,达46%,Supra-G的再狭窄率最低,为10.5%。结论冠状动脉内支架植入术后再狭窄与支架长度、构型等因素有关,小血管内植入支架仍须慎重。

objectives To discuss the factors impacting in-stent restenosis. Methods The data of 104 patients who underwent successful coronary stenting and followed up angiography were analysed. The stenosis and length of the lesions were measured by QCA. Results Of the 104 patients,stents were implanted in 138 lesions. The restenosis rate was 35.5%. The stent length was significant longer in restenosis group compared with non-restenosis group （22±6 mm.vs 18±6 mm,P〈0.001）.The restenosis rate of short stent was significant less than that of long stent and multi-stents. The ratio of small vessel was significant higher than big vessel. The restenosis rate of BX stent was 46%. Conclusions The restenosis rate of coronary stent implantation relates to stent length and constitution. Stenting in small vessel must be cautious.