A 70-year-old man with a prior anterior MI comes for his routine evaluation. He feels well and has no symptoms. He is taking metoprolol 100 mg bid, aspirin 81 mg od, enalapril 10 mg bid, and simvastatin 40 mg od for secondary prevention.For the above patients, select the characteristic ECG finding.
prolonged PR interval broad-notched P wave in lead II short QT interval short PR interval