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目的分析心电图对急性下壁心肌梗死致病血管的诊断价值。方法选取2008年1月-2012年2月我院心肌梗死患者40例,分别行心电图检查和冠状动脉造影检查。结果心电图表现为ST段出现抬高,Ⅲ大于Ⅱ时,诊断右冠状动脉狭窄的敏感性为89.28%(25/28),特异性为85.71%(18/21);当心电图表现ST段出现压低avL大于I时,诊断右冠状动脉狭窄的敏感性为90.32%(28/31),特异性为85.71%(18/21);当心电图表现V1-2ST段没有压低时,诊断右冠状动脉狭窄的敏感性为87.88%(29/33),特异性为73.68%(14/19)。结论心电图可有效提示急性下壁心肌梗死致病相关血管。
Objective To analyze the diagnostic value of electrocardiogram (ECG) in the pathogenesis of acute inferior myocardial infarction. Methods Forty patients with myocardial infarction in our hospital from January 2008 to February 2012 were selected for electrocardiogram and coronary angiography. Results Electrocardiogram showed elevation of ST segment. When Ⅲ was greater than Ⅱ, the sensitivity of right coronary artery was 89.28% (25/28) and specificity was 85.71% (18/21). When the electrocardiogram showed depression The sensitivity of diagnosis of right coronary artery stenosis was 90.32% (28/31) and specificity was 85.71% (18/21) when avL was greater than 1, and right coronary artery stenosis was diagnosed when the electrocardiogram showed no depression of V1-2ST The sensitivity was 87.88% (29/33) and the specificity was 73.68% (14/19). Conclusion Electrocardiogram can be an effective indicator of angiogenesis in acute inferior myocardial infarction.