Review Question - QID 108935

A 63-year-old man presents to the emergency department complaining of worsening nausea. He reports that the nausea began several months ago and is accompanied by occasional bloating and heartburn. He reports that he frequently feels full even after eating only a little at each meal, and occasionally he will vomit if he eats too much. The vomit is non-bloody and contains bits of undigested food. A review of systems is notable for occasional headaches, tingling in his distal extremities, and constipation. His medical history is significant for Parkinson disease diagnosed 3 years ago, hypertension diagnosed 8 years ago, and type II diabetes mellitus diagnosed 10 years ago. The patient reports that he was given prescriptions for both his blood pressure and diabetes, but he has not taken either for months because one of them was causing erectile dysfunction. He reports he regularly takes his levodopa-carbidopa. His temperature is 98.6°F (37°C), blood pressure is 161/95 mmHg, pulse is 82/min, and respirations are 11/min. An endoscopy does not reveal any findings concerning for malignancy. In addition to restarting medications for his hypertension and diabetes, which of the following is most appropriate treatment for the patient’s symptoms?