Significance of Precordial ST Segment Depression During Inferior andPosterlor Acute Myocardial Infarction

patients with inferior acute myocardial infarction（AMI） and 38 cases withinferior AMI associated posterior wall infarction were studed to determine the ECG diagnosticvalue。 It was shown the precordial ST segment depression in concomitant posterior wallinfarction was higher than that in inferior AMI, and correlated highly with ST segmentchanges in inferior leads. The results also indicated the precordial ST segment depressionwere both sensitive （73.7%）and sepecific（75.0%）in indentifying associating posterior wall 1. infarction。 In addition, cardiac catheterization findings shown the vessel disease in left ant-erior descending artery and left circumflex artery were no significance in the occurrance ofprecordial ST segment depression in inferior and posterior AMI.