Review Question - QID 215079

A 55-year-old man presents to clinic with a chief complaint of chest discomfort. For the past month, he has experienced a pressure-like sensation in the substernal region that radiates to his left arm when he walks up a flight of stairs. The discomfort lasts for 4-5 minutes and resolves with rest. He does not currently have chest discomfort. His medical conditions are hypertension and asthma for which he takes amlodipine and uses an albuterol inhaler. He is a former smoker and has a 40 pack-year smoking history. The patient’s temperature is 97.8°F (36.6°C), blood pressure is 144/78 mmHg, pulse is 86/min, and respirations are 16/min. Physical exam reveals normal heart and lung sounds with no murmurs. There is no tenderness to palpation of the chest. An electrocardiogram (ECG) taken in clinic is shown in Figure A. Troponin level is undetectable. Which of the following is the most appropriate next step in the management of this patient?