Review Question - QID 212640

A 30-year-old woman presents to the emergency department with chest pain. She states that she was making coffee this morning when she suddenly developed sharp, 8/10, mid-sternal chest pain. The pain does not radiate and is constant. She is worried because she has a marathon next week that she has been training for. Her medical history is significant for seasonal allergies. She takes no medications except a multivitamin. Her mother has asthma. She works as a lawyer. She denies sick contacts or recent travel. She has a glass of wine with dinner but denies tobacco or recreational drug use. The patient’s initial temperature is 98°F (36.7°C), blood pressure is 122/78 mmHg, pulse is 89/min, and respirations are 14/min with an oxygen saturation of 98% on room air. A physical examination is within normal limits. Labs are pending. Which of the following is the best initial step in management?