急性非ST段抬高型心肌梗死冠状动脉造影特点分析

Coronary angiography characteristics of acute non-ST-segment elevation myocardial infarction

目的探讨急性非ST段抬高型心肌梗死患者冠状动脉造影特点及意义。方法经冠状动脉造影确诊的急性非ST段抬高型心肌梗死患者96例为观察组,同期诊治急性ST段抬高型心肌梗死患者102例为对照组;分析并比较2组患者冠状动脉狭窄程度、病变支数、侧支循环形成情况等。结果观察组多支病变率（62.50%）、侧支循环建立比率（30.21%）及血管狭窄〉75%-90%、〉90%-〈100%发生率（28.13%、34.38%）均高于对照组（45.10%、12.75%、23.53%、29.41%）（P〈0.05）,血管闭塞发生率（8.33%）低于对照组（17.65%）（P〈0.05）;2组病变血管构成比比较差异无统计学意义（P〉0.05）。结论急性非ST段抬高型心肌梗死冠状动脉病变以多支病变为主,75%以上狭窄病变发生率较高;侧支循环建立是心肌梗死形成非ST段抬高的主要原因。

Objective To investigate the coronary angiography characteristics of acute non-ST-segment elevation myocardial infarction （NSTEMI）. Methods The coronary artery stenosis degree, number of lesion vessels and the formation of collateral circulation were analyzed and compared between 96 patients with acute NSTEMI （observation group） and 102 patients with acute ST-segment elevation myocardial infarction （STEMI） （control group）. Results The multivessel disease rate （62.50%）, collateral circulation rate （30.21%）, incidence of stenosis 〉75% to 90% （28.13%） and incidence of stenosis 〉90% to 〈100% （34.38 %） in observation group were significantly higher than those in control group （45. 10%, 12. 75 %, 23.53%, 29.41%） （P〈0. 05）. The incidence of vascular occlusion was significantly lower in observation group （8. 33%） than that in control group （17. 65%） （P〈0.05）. Conclusion Multivessel lesions are commonly found in patients with acute NSTEMI. The incidence of stenosis 〉75% is high. Collateral circulation is the main cause of NSTEMI.