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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 characteristics and significance of coronary angiography in patients with acute non-ST segment elevation myocardial infarction. Methods Ninety-six patients with acute non ST-segment elevation myocardial infarction diagnosed by coronary angiography were selected as the observation group. 102 patients with acute ST-segment elevation myocardial infarction were treated as control group during the same period. The severity of coronary artery stenosis , The number of lesions, collateral circulation formation and so on. Results The incidence of multi-vessel disease (62.50%), collateral circulation establishment rate (30.21%) and vascular stenosis> 75% -90% and incidence rate of> 90% ~ <100% (28.13%, 34.38% The incidence of vascular occlusion (8.33%) was lower in the control group (45.10%, 12.75%, 23.53%, 29.41%) than that in the control group (17.65%) (P <0.05) The difference was not statistically significant (P> 0.05). Conclusion The coronary lesions in patients with acute non-ST-segment elevation myocardial infarction are mainly multi-vessel disease with a high incidence of over 75% stenosis. Collateral circulation is the main cause of myocardial infarction with non-ST-segment elevation.