Which ECG finding may be seen in MI?

• A. Elevated ST segment
• B. Q waves
• C. Peaked P waves
• D. Inverted T waves

Answer: (D)

Ischemia from a myocardial infarction alters the heart’s repolarization, so the T wave can invert on the ECG. This inward shift in repolarization currents reflects injury to the myocardium and is a common sign as an infarct evolves or in cases of subendocardial ischemia. While acute MI often shows ST-segment elevation during the immediate injury, T wave inversion may appear as the infarct progresses or in non-ST-elevation scenarios. Over time, Q waves can develop if there’s irreversible necrosis, and they indicate scar. Peaked P waves are not characteristic of MI and point to atrial enlargement or other non-MI conditions. So inverted T waves fit as a plausible ECG finding in MI, reflecting ischemia and evolving injury.