Review Question - QID 213732

A 65-year-old man with a past medical history of obesity and diabetes presents to the emergency department with chest pain. He describes it as a chest pressure that radiates to his left arm and is worsened with exertion. Upon transport, the paramedics administered aspirin and nitroglycerin, and his chest pain resolved. The patient recently returned from a transatlantic flight. Currently, he states that he feels back to his baseline. His temperature is 97.9°F (36.6°C), blood pressure is 154/94 mmHg, pulse is 88/min, respirations are 13/min, and oxygen saturation is 95% on room air. Physical exam is notable for a regular rate and rhythm with no murmurs and good air movement on cardiopulmonary exam. Laboratory studies are ordered as seen below.

Hemoglobin: 15 g/dL
Hematocrit: 44%
Leukocyte count: 5,900/mm^3 with normal differential
Platelet count: 177,000/mm^3

Serum:
Na+: 137 mEq/L
Cl-: 101 mEq/L
K+: 4.0 mEq/L
HCO3-: 25 mEq/L
BUN: 23 mg/dL
Glucose: 103 mg/dL
Creatinine: 1.2 mg/dL
Ca2+: 10.2 mg/dL
Troponin: < 0.10 ng/mL

An initial chest radiograph is unremarkable. An ECG is performed as seen in Figure A. A repeat troponin 4 hours later reveals a value < 0.10 ng/mL. Which of the following is appropriate management of this patient?