Management of Persistent Hypertension with SBP >175 mmHg

Current Medication Analysis

The patient is currently on amlodipine 5 mg daily, which should be increased to 10 mg daily as the first step in medication adjustment, according to the American Heart Association guidelines 1
The patient is also on valsartan 320 mg daily, which is the maximum dose of an angiotensin receptor blocker 1

Increase amlodipine from 5 mg to 10 mg daily to optimize current medications, as recommended by the American College of Cardiology 2
Add a thiazide/thiazide-like diuretic, such as chlorthalidone 12.5-25 mg daily or hydrochlorothiazide 12.5-25 mg daily, if blood pressure remains uncontrolled after amlodipine increase, as recommended by the International Society of Hypertension guidelines 1, 2, 3
If blood pressure remains uncontrolled after steps 1 and 2, add spironolactone 25 mg daily as a fourth agent, as recommended by the American Heart Association guidelines 2

Recheck blood pressure within 2-4 weeks after medication adjustment, as recommended by the American College of Cardiology 1
Target blood pressure should be <130/80 mmHg, according to current guidelines from the American Heart Association 1, 2, 3
Monitor for potential side effects, including peripheral edema, headache, and flushing with increased amlodipine, and hyperkalemia with valsartan, especially if renal impairment is present 1, 2

The patient is already on maximum dose of valsartan, so increasing this medication is not an option, as stated by the American College of Cardiology 1
Increasing amlodipine from 5 mg to 10 mg provides additional blood pressure reduction with generally acceptable tolerability, according to studies cited by the American Heart Association 2
Be cautious about excessive blood pressure lowering in patients with diabetes to avoid hypotensive episodes, as recommended by the American Diabetes Association 1, 2