A 48-year-old man is admitted to the coronary care unit with an acute inferior myocardial infarction. Two hours after admission, his blood pressure is 86/52 mmHg; his heart rate is 40 beats per minute with sinus rhythm. Which of the following would be the most appropriate initial therapy? 

A 68-year-old man with a history of hypertension, diabetes, and urinary retention awoke feeling nauseated and light-headed. He did not respond to questions from his wife. When the emergency medical technicians ar- rived, his blood pressure was 60 by palpation. IV fluids and oxygen were administered. Vital signs obtained in the ER were blood pressure 60, heart rate 120 and regular, temperature 38.9 C (102 F), and respiratory rate 30. A brief physical examination revealed coarse rales approx- imately halfway up in the chest bilaterally and inaudible heart sounds. An indwelling urinary catheter was placed with drainage of 10 to 20 mL of dark urine. Chest x-ray revealed bilateral interstitial infiltrates; ECG was unre- markable except for sinus tachycardia. Antibiotics were administered, and the patient was transferred to the ICU, where a right heart catheterization was performed. Pul- monary capillary wedge pressure was 28 mmHg. Cardiac output was 1.9 L/min. Right atrial mean pressure was 10 mmHg. The most likely cause of this man’s hypoten- sion was 

Which of the following statements concerning the use of captopril is true?