Review Question - QID 108974

A 62-year-old man presents to the emergency department with chest pain and shortness of breath that he experienced while barbecuing. The pain is over his chest and in his left arm. The patient has a medical history of obesity, type 2 diabetes mellitus, and hypertension. His current medications include insulin, metformin, lisinopril, and hydrochlorothiazide. An ECG is performed and is seen in Figure A. His temperature is 99.5°F (37.5°C), pulse is 112/min, blood pressure is 100/70 mmHg, respirations are 18/min, and oxygen saturation is 95% on room air. The patient is appropriately managed and is admitted to the step-down unit. 2 days later, he complains of chest pain. A repeat ECG is performed and is seen in Figure B. Which of the following is the most appropriate next step in management for this patient's underlying condition?