system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 51-year-old woman comes to the physician because of worsening chest pain on exertion. She was diagnosed with coronary artery disease and hyperlipidemia 3 months ago. At the time of diagnosis, she was able to walk for 15 minutes on the treadmill until the onset of chest pain. Her endurance had improved temporarily after she began medical treatment and she was able to walk her dog for 30 minutes daily without experiencing chest pain. Her current medications include daily aspirin, metoprolol, atorvastatin, and isosorbide dinitrate four times daily. Her pulse is 55/min and blood pressure is 115/78 mm Hg. Treadmill walking test shows an onset of chest pain after 18 minutes. Which of the following is most likely to improve this patient’s symptoms?
assistant
Avoid isosorbide dinitrate at night