Medicine M.I. & Angina 1e6286d1 What is diagnostic of fresh myocardial infarction in ECG: A QT interval prolongation B P mitrale C ST segment elevation D ST segment depression High-Yield Explanation Ans. is 'c' ST segment elevation (Ref Harrison, 16/e, p 1450 (15/e, p1388), Schamroth 6/e, p40).