A 65-Year-Old Man Reported Some Unusual Sensations in His Chest

A 65-year-old man reported some unusual sensations in his chest. His blood pressure is 135/85 mm Hg, and he weighs 200 pounds. He had an electrocardiogram, which is shown below. What is his likely diagnosis?

A) Atrial paroxysmal tachycardia
B) First-degree atrioventricular block
C) Second-degree atrioventricular block
D) Premature atrial contractions
E) Premature ventricular contractions