Review Question - QID 216399

A 55-year-old man presents to the emergency department with chest pain, dyspnea, and nausea for the past 30 minutes. His symptoms started suddenly while he was at home cleaning his house. The patient states that his symptoms seem to be worsening. He has a history of obesity, diabetes, and hypertension. He does not regularly take medications for his underlying medical conditions. His temperature is 98.7°F (37.1°C), blood pressure is 139/82 mmHg, pulse is 103/min, respirations are 19/min, and oxygen saturation is 99% on room air. Physical exam reveals a diaphoretic and uncomfortable appearing man. He has clear bilateral breath sounds and normal S1 and S2 heart sounds. An ECG is performed as seen in Figure A. Which of the following is the most appropriate next step in management?