What is diagnostic of fresh myocardial infarction In ECG-
QT interval prolongation
Pmitrale
ST segment elevation
ST segment depression
Ref: R Alagappan - Manual of Practical Medicine 4th Edition.pg no:184 ECG * May be normal initially and hence serial ECGs must be taken. * ST elevation and T-wave inversion with pathological Q-waves are typically seen in leads adjacent to the infarcted segment of myocardium. * Reciprocal ST depression or T-wave inversion in opposite leads. * A non-Q-wave infarct may occur and has a high risk of moality (as they are prone to develop dangerous arrhythmias and recurrent angina).
C.V.S