A 76-year-old woman is evaluated during a follow-up visit for hypertension. She notes fluctuating home blood pressure measurements, with systolic blood pressure measurements in the range of 140 to 150 mm Hg. History is notable for osteoporosis, hip fracture and subsequent hip replacement, and vertebral fracture. Medications are amlodipine, alendronate, calcium, and vitamin D.

On physical examination, the patient appears frail; she has difficulty climbing onto the examination table and requires assistance. Average blood pressure is 152/76 mm Hg based on two measurements, which is consistent with home measurements taken over the past few weeks. Pulse rate is 64/min. BMI is 19. It takes her 20 seconds to walk 6 meters. The remainder of the examination is unremarkable.

Laboratory studies show a normal chemistry panel; a urine dipstick demonstrates no protein.

Which of the following is the most appropriate next step in management?