MSFinals-6556
A 72-year-old man, who used to smoke and has a smoking history of 24 pack-years, presents to the emergency department with sudden chest pain. He describes the pain as starting in the center of his chest and then spreading to his back. The man lives alone, has a history of high blood pressure, and drinks 20 units of alcohol per week. On examination, he has a respiratory rate of 28 breaths per minute, a heart rate of 130 beats per minute, and a blood pressure of 88/65 mmHg. What is the most appropriate next step in managing this patient?