The diagnosis of right ventricular myocardial infarction is based on an additional lead electrocardiogram of the right chest. Right ventricular myocardial infarction can be diagnosed as right ventricular myocardial infarction if the ECG is characterized by acute inferior or posterior wall myocardial infarction and is accompanied by one of the following ECG manifestations: i. STV3R-V5R elevation, >0.1mv or STV4R elevation ≥0.05mv, and the degree of elevation of V4R > V3R > V1. ii. the ratio of the downward shift of STV2 segment to the elevation of STAVF ≤50%. STIII elevation/STII elevation >1. Pathologic Q waves in V3R and V4R accompanied by ST segment elevation. iii.