ST段抬高心肌梗死与非ST段抬高心肌梗死的冠脉病变特点的比较

目的：比较非ST段抬高心肌梗死(NSTEMI)与ST段抬高心肌梗死(STEMI)的冠脉病变特点。方法：连续住院的76例急性心肌梗死的患者，其中STEMI患者57例和NSTEMI患者19例，于梗死后7～14d内行经皮冠状动脉造影术，分析病变的类型、范围、部位、狭窄程度及侧支循环等。结果：NSTEMI组的多支病变≥90％的狭窄程度及侧支循环比率均高于STEMI组，而完全闭塞率则低于STEMI组，两组病变类型无差异。结论：NSTEMI组的多支病变率多于STEMI组，且前者的远期预后有可能较后者差。

Comparison of Coronary Artery Lesions Between ST - segment Elevation and Non- ST- segment Elevation Myocardial Infarction

Objective: To compare the features of cornary artey lesions in non-ST-segment elevation (NSTEMI) with ST-segment elevation myocardial infarction (STEMI). Methods:19 NSTEMI patients and 57 STEMI patients were enrolled into this study.Coronar angiography (CAG) was performed on 7 to 14 days after myocardial infarction.The type,extent of lesion,diseased region and lateral branch circulation were analysed and compared between NSTEMI and STEMI patients. Results:The rates of three vessel diseases,whose degree of stenosis more than 90 percents and lateral branch circulation were higher and the rate of occlusion was lower in NSTEMI patients than those in STEMI patients.There was no difference in types of lesions between two groups. Conclusion:The incidence of multi-vessel diseases in NSTEMI was higher,in which the long-term prognosis was unfavorable.