A 57-year-old woman presents to the hospital with a 2-hour history of retrosternal chest pain and dyspnea. Her electrocardiogram (ECG) reveals an acute myocardial infarction pattern. Which of the following ECG patterns is consistent with that interpretation?: (A) tall P waves, (B) prominent U waves, (C) small QRS complex, (D) elevated ST segments
Answer is D. Early ischemic changes are tall, peaked T waves that then develop into inverted T waves. Elevated ST segments and Q waves also occur early.