Electrocardiographic diagnosis of infarction of the right ventricular anterior wall.
Fifty cases of acute myocardial infarction manifesting in anterior chest leads were studied. The site of infarction was determined by detailed two-dimensional echocardiography. Isolated left ventricular anteroseptal infarction was found in 32 patients, infarction of the anterior wall of the left as well as the right ventricle in 12, and infarction localized to the right ventricular anterior wall in 6. ST-segment depression followed by deep symmetrical T wave inversion, increasing in depth from lead V1 to lead V3 without loss of the R wave in these leads, was highly sensitive and specific in detecting isolated right ventricular anterior wall infarction. ST-segment elevation in right-sided chest leads was not useful. Concomitant ST-segment depression in inferior leads was highly specific and sensitive in diagnosing infarction of the right ventricular anterior wall in the presence of left ventricular anterior infarction.
Mittal
S R
SR
Department of Medicine, J. L. N. Medical College, Ajmer (Rajasthan), India.
Tiwari
D
D
D016022:Case-Control Studies; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans; D009203:Myocardial Infarction / Q000175:diagnosis*; D015588:Observer Variation; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D013997:Time Factors