血运重建程度对老年冠心病合并糖尿病患者经皮介入治疗术后临床预后的影响

摘要

Objective To assess the effect of revascularization on clinical outcome in elderly CHD patients with DM undergoing PCI.Methods 1055 CHD patients with DM undergoing PCI were divided into complete revascularization (CR) group (n=261),non-CR group 1 (n=385) and non-CR group 2 (n=409).The patients were followed up for 2 years during which the cardiovascular events were recorded.The SYNTAX revascularization index (SRI) was calculated according to the ROC curve and the best prognostic accuracy of revascularization was assayed.Results A significant difference was found in the incidence of MACE,angina pectoris,motality,cardiogenic death,myocardial infarction,unplanned revascularization during the 2-year follow-up period (P＜ 0.05,P＜0.01).Logistic regression analysis showed that SRI was a protective factor for MACE,reduced 64％ of MACE,and thus played a great role in predicting the incidence of MACE in elderly CHD patients with DM after 2 years of PCI (P=0.010).The area under the ROC curve showed the best prognostic accuracy of revascularization was 65％.Conclusion The incidence of cardiovascular events is low in elderly CHD patients with DM after 2 years of CR.The revascularization rate should be higher than 65％ for those who cannot undergo CR in order to reduce their mortality during the long-term follow-up period.%目的 评估不同血运重建程度对老年冠心病合并糖尿病患者临床预后的影响.方法 选择接受PCI的冠心病合并糖尿病患者1055例,根据血运重建程度分为完全性血运重建(CR)组261例SYNTAX血运重建指数(SRI)100％],非CR1组385例(SRI 50％～99％)及非CR2组409例(SRI＜50％).观察3组随访2年心血管事件发生情况,并根据ROC曲线计算约登指数,找到临床最佳血运重建程度截点.结果 3组随访2年主要不良心血管事件(MACE)、心绞痛、死亡、心源性死亡、心肌梗死、非计划血运重建比较,差异有统计学意义(P＜0.05,P＜0.01).logistic回归分析显示,SRI是老年冠心病合并糖尿病患者PCI术后2年MACE的保护因素,其中合理的SRI可以使2年MACE发生风险降低64％(P=0.010).SRI对MACE有很高的预测价值,ROC曲线下面积为0.65,最大约登指数为0.291,血运重建程度最佳截点为65％.结论 老年冠心病合并糖尿病患者CR随访2年心血管事件更低.对不能进行CR患者应尽可能使血运重建程度达到65％以上,以降低长期随访病死率.