Review Question - QID 210577

A 57-year-old man presents to the emergency department with shortness of breath. He was eating dinner with his family during the holidays and felt very short of breath, thus prompting him to come in. The patient has a past medical history of diabetes, hypertension, 2 myocardial infarctions, and obesity. His temperature is 98.7°F (37.1°C), blood pressure is 147/58 mmHg, pulse is 107/min, respirations are 16/min, and oxygen saturation is 89% on room air. Physical exam is notable for bilateral pulmonary crackles and a jugular venous distension. Chest radiography reveals an enlarged cardiac silhouette and blunting of the costophrenic angles. The patient is started on a medication for his acute symptoms. 2 hours later, he states his symptoms have vastly improved and repeat chest radiography is notable for an enlarged cardiac silhouette. Which of the following is a property of the medication most likely given?