Review Question - QID 214500

A 67-year-old woman presents to the emergency department with shortness of breath. She has had these symptoms before and was previously admitted to the intensive care unit for bilevel positive airway pressure (BiPAP) and diuresis. She has a past medical history of heart failure with a most recent ejection fraction of 31%. Her temperature is 97.7°F (36.5°C), blood pressure is 184/104 mmHg, pulse is 120/min, respirations are 29/min, and oxygen saturation is 78% on room air. Physical exam reveals prominent bilateral wheezes with poor air movement and pitting edema that extends to the patient's hips. The patient is started on a nitroglycerin drip, furosemide, and BiPAP and is admitted to the intensive care unit. On day 3, her symptoms have significantly improved, and she is sent to the medical floor. The patient is being discharged with a plan to follow up with her cardiologist. Which of the following medications at discharge is most likely to lower mortality in this patient?