Review Question - QID 106159

A 66-year-old man presents to the emergency department with dyspnea. Two days ago, he hosted his grandchild's birthday party, and since has noticed general malaise, fever, and dry cough. He does not know if he feels more dyspneic while supine or standing but has noticed difficulty breathing even while watching television. He has a past medical history of congestive heart failure and hypertension, for which he takes aspirin, metoprolol, furosemide, lisinopril, and spironolactone as prescribed. His blood pressure is 90/50 mmHg, pulse is 120/min, and respirations are 30/min. His radial pulse is barely palpable, and his wrists and ankles are cold and clammy. Physical exam reveals a S3 a...