Hypertension Management

Introduction

Hypertension management guidelines are provided by various authorities, including the American Heart Association and the American College of Cardiology, to help healthcare professionals manage hypertension effectively 1, 2, 3, 4, 5, 6, 7

African American patients respond better to thiazide diuretics and calcium channel blockers than to ACE inhibitors or ARBs as monotherapy, according to the American Heart Association 1
The American College of Cardiology recommends using a thiazide-type diuretic (e.g., chlorthalidone 12.5-25 mg daily) or calcium channel blocker (CCB, e.g., amlodipine 5-10 mg daily) as first-line therapy for African American patients with hypertension, due to their proven efficacy in reducing cardiovascular events in this population 5, 1
For patients with more severe hypertension (SBP ≥140 mmHg or DBP ≥90 mmHg), the American College of Cardiology and the American Heart Association recommend initiating combination therapy with both a thiazide-type diuretic and a CCB 5, 6
If blood pressure remains uncontrolled on monotherapy, adding the complementary agent (add CCB if started with diuretic, or add diuretic if started with CCB) is recommended by the American College of Cardiology 5
Consider a single-pill combination to improve adherence, as suggested by the American Heart Association 6
Recommended combinations include thiazide-type diuretic + CCB, or CCB + ARB/ACE inhibitor 5

The target blood pressure is less than 130/80 mmHg, as recommended by the American Heart Association 1
Target blood pressure should be individualized, with a general target of <130/80 mmHg, but may be adjusted to <140/90 mmHg in very elderly patients, considering the risk of orthostatic hypotension and falls 2
For patients with diabetes, the target blood pressure is <130/80 mmHg, and blood pressure control should be reassessed within 2-4 weeks after medication changes, aiming to achieve target blood pressure within 3 months 1
For older adults (75 years old), start amlodipine at a low dose (2.5 mg daily) and titrate up as needed, with a target blood pressure of <140/90 mmHg 1

Combination therapy is often necessary to achieve target blood pressure, particularly in patients with high blood pressure, as noted by the American Heart Association 1
Simplified regimens with once-daily dosing improve adherence, according to the American College of Cardiology 1
Beta-blockers reduce cardiac output, while calcium channel blockers cause vasodilation, providing synergistic blood pressure lowering effects when used together 2
Dihydropyridine calcium channel blockers, like amlodipine, do not worsen heart failure, unlike non-dihydropyridine CCBs (diltiazem, verapamil), making them a suitable choice for patients with heart failure 4
Amlodipine can be used in elderly patients, with a potential starting dose of 2.5 mg, which can be titrated up as needed, and has minimal effects on heart rate, making it complementary to beta-blockers 4
Non-dihydropyridine calcium channel blockers, such as diltiazem and verapamil, are contraindicated in heart failure due to their negative inotropic effects, and should be avoided in patients with heart failure 4
Chlorthalidone is preferred over hydrochlorothiazide due to superior outcomes in clinical trials, according to the American College of Cardiology 5

Monitoring for peripheral edema, a common side effect of amlodipine, and checking blood pressure, electrolytes, and renal function within 2-4 weeks after adding amlodipine are crucial for safe management 2
Most guideline societies recommend checking blood pressure, electrolytes, and renal function within 2-4 weeks after medication changes, and aim to achieve target blood pressure within 3 months, with a target blood pressure of <130/80 mmHg 5, 1
Baseline tests should include fasting blood glucose, hemoglobin A1C, complete blood count, lipid profile, serum creatinine with eGFR, electrocardiogram, urinalysis, and TSH for patients with hypertension 7
Screening for secondary causes of hypertension should include review of medications that may raise blood pressure, assessment for sleep apnea symptoms, and evaluation for signs of primary aldosteronism, especially if resistant hypertension develops 7
Regular follow-up and reassessment of blood pressure control every 3 months is necessary to monitor treatment adherence and potential drug interactions, with simplified regimens with once-daily dosing improving adherence 1

African Americans have a higher risk of angioedema with ACE inhibitors, according to the American College of Cardiology, and beta-blockers are less effective as monotherapy in African Americans 5
For African-American patients, low dose ARB + DHP-CCB (dihydropyridine calcium channel blocker) or DHP-CCB + thiazide/thiazide-like diuretic is recommended, with a goal of achieving target blood pressure <130/80 mmHg 1
Excessive blood pressure lowering should be avoided, as it can lead to orthostatic hypotension and falls in elderly patients, and a gradual titration of antihypertensive agents is recommended 4