ABSTRACT
To evaluate the diagnostic and prognostic value of ST segment elevation in lead III greater than lead II in patients with acute inferior myocardial infarction for predicting in hospital mortality and associated RV myocardial infarction, 40 patients with acute inferior myocardial infraction were included in this study. ECG, echocardiography and coronary angiography were performed for all patients. The presence o f ST-segment elevation in lead III lead > II from admission ECC defined the presence of RV infarction with sensitivity of 85.7% and specificity of 89.5%. During the hospital course, the prevalence of heart failure, post infarction angina, conduction defects and mortality were higher in patients with ST-segment elevation in lead III > lead II. The study concluded that ST-segment elevation in lead III more than lead II is more sensitive and specific than V3R, V4R in diagnosis RVMI. It is an excellent screening tool for RVMI given its universal availability on all electrocardiograms. Moreover, ST-segment elevation in lead III more than lead II is a significant predictor of in-hospital mortality and post-MI complications