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目的探讨心电图(ECG)对急性下壁心肌梗死患者梗死相关血管(IRA)判断的价值。方法筛选2002年7月～2004年7月我院心内科住院的急性下壁心肌梗死患者60例,回顾性分析其症状发作后24小时内ECG改变。结果Ⅰ导联ST段抬高,ST段抬高Ⅲ导联>Ⅱ导联,导联V4RST段抬高≥0.5mm,V1和V2导联ST段抬高或压低,aVR导联ST段压低。5项标准可用于判断急性下壁心肌梗死患者的IRA,而aVR导联ST段压低为一项新的标准。结论aVR导联ST段压低为判断急性下壁心肌梗死患者梗死相关血管(IRA)的新标准。
Objective To investigate the value of electrocardiogram (ECG) in judging infarct-related blood vessels (IRA) in patients with acute inferior myocardial infarction. Methods Sixty patients with acute inferior myocardial infarction who were hospitalized in Department of Cardiology of our hospital from July 2002 to July 2004 were retrospectively analyzed. ECG changes within 24 hours after the onset of symptoms were retrospectively analyzed. Results ST segment elevation in lead Ⅰ, ST segment elevation Ⅲ lead> Ⅱ lead, lead V4RST elevation ≥0.5 mm, ST segment elevation or depression in lead V1 and V2, and STV depression in lead aVR. Five criteria can be used to determine the IRA in patients with acute inferior myocardial infarction, and aVR lead ST segment depression as a new standard. Conclusions ST-segment depression in aVR leads is the new standard for judging infarct-related blood vessels (IRA) in patients with acute inferior myocardial infarction.