A 45-year-old man comes to the physician because of a 6-week history of muscle weakness and fatigue. He has a 5-year history of hypertension treated with hydrochlorothiazide. He drinks 6 beers each evening. Blood pressure is 110/65 when seated and 105/60 when standing. Laboratory studies show: hemoglobin 12 g/dL, K+ 3.3 mEq/L; glucose 97 mg/dL. Which of the following is the most likely explanation for this patient’s findings?
Alcohol
Conn syndrome
Dehydration
Medication adverse effect
Orthostatic hypotension
