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目的探讨肢导心电图对急性下壁心肌梗死累及右室(RV)的诊断价值。方法选择初发急性下壁心肌梗死(AIMI)患者122例,根据右胸导联V3R～V5R是否具备2个导联的ST段抬高≥0.1mV,分为单纯AIMI组与合并右室梗死(ARVI)组。测定Ⅲ导联与Ⅱ导联ST段升高的比值。结果Ⅲ导联ST段抬高大于Ⅱ导联(简称ST↑Ⅲ/Ⅱ>1)在两组间存在显著差异。结论ST↑Ⅲ/Ⅱ>1对AIMI累及右室有诊断价值。
Objective To investigate the diagnostic value of limb-lead electrocardiogram (ECG) in right ventricle (RV) in patients with acute inferior myocardial infarction. Methods A total of 122 patients with newly diagnosed acute inferior myocardial infarction (AIMI) were enrolled in this study. According to whether the lead of right chest lead V3R ~ V5R has ST-segment elevation of ≥0.1 mV in two leads, the patients were divided into AIMI group and right ventricular infarction ARVI) group. The ratio of ST-segment elevation in lead III and lead II was measured. Results The ST segment elevation in lead Ⅲ was greater than that in lead Ⅱ (ST ↑ Ⅲ / Ⅱ> 1). There was a significant difference between the two groups. Conclusion ST ↑ Ⅲ / Ⅱ> 1 has diagnostic value for the involvement of AIMI in the right ventricle.