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目的探讨下壁心肌梗死时心电图aVR导联QRS波群形态的改变。方法分析89例急性下壁心肌梗死患者心梗前、后以及1年后的心电图和100例经冠状动脉造影证实的无冠心病患者的心电图,分析aVR导联QRS波群形态的变化。结果急性下壁心肌梗死前和无冠心病患者的心电图aVR导联QRS波群多呈q(Q)r型(89.2%),少数呈QS型(10.8%);下壁心肌梗死后及1年后心电图aVR导联QRS波群多呈rs(S)型(86.21%),少数呈QS型(12.77%),极少数呈Qr型(1.02%)。结论下壁心肌梗死后心电图aVR导联QRS波群多呈r(sS)型。
Objective To investigate the morphological changes of QRS complex in aVR lead of inferior wall myocardial infarction. Methods The electrocardiogram of 89 patients with acute inferior myocardial infarction before myocardial infarction, one year after myocardial infarction and 100 patients without coronary heart disease confirmed by coronary angiography were analyzed to analyze the changes of QRS complex in aVR patients. Results The QRS complex of aVR lead in patients with acute inferior myocardial infarction and without coronary heart disease was mostly q (Q) r type (89.2%), a few were QS type (10.8%); inferior myocardial infarction and 1 year The QRS complex of aVR lead was mostly rs (S) type (86.21%), QS type (12.77%) in a few cases, and Qr type (1.02%) in a few. Conclusions The QRS complex of aVR lead in inferior electrocardiogram is mostly r (sS) type.