What is the recommended treatment approach for an adult with hypertension, including lifestyle modifications and first‑line medication choices?

Treatment of High Blood Pressure in Adults

For most adults with confirmed hypertension, initiate treatment with a two-drug combination (preferably as a single-pill combination) consisting of a RAS blocker (ACE inhibitor or ARB) plus either a dihydropyridine calcium channel blocker or a thiazide-like diuretic, targeting a blood pressure of <130/80 mm Hg for those under 65 years and <130 mm Hg systolic for those 65 and older. 1, 2

Diagnostic Confirmation Before Treatment

Before initiating therapy, confirm the diagnosis with accurate measurements:

• Obtain office blood pressure measurements on at least three separate occasions to confirm hypertension (≥130/80 mm Hg) 3
• Use home blood pressure monitoring or 24-hour ambulatory monitoring to exclude white coat hypertension, which affects 1-5% of patients annually 3, 1
• Measure standing blood pressures in elderly patients and those with diabetes to assess for orthostatic hypotension 3

Treatment Algorithm by Blood Pressure Category

Elevated BP (120-129/<80 mm Hg)

• Initiate lifestyle modifications only if 10-year ASCVD risk is <10% 3, 1
• Repeat blood pressure evaluation within 3-6 months 3
• Consider pharmacological treatment after 3 months if blood pressure remains elevated and ASCVD risk is high 2

Stage 1 Hypertension (130-139/80-89 mm Hg)

• Begin with lifestyle modifications if 10-year ASCVD risk is <10% 3
• Add pharmacological therapy immediately if 10-year ASCVD risk is ≥10%, using single-drug or two-drug combination 3, 1
• Reassess within 1 month after initiating medications 3

Stage 2 Hypertension (≥140/90 mm Hg)

• Initiate combination therapy with two antihypertensive agents from different classes immediately 3, 1
• Evaluate or refer to primary care within 1 month 3
• For blood pressure ≥160/100 mm Hg, two-drug combination is mandatory for more effective control 3

Hypertensive Emergency (≥180/110 mm Hg)

• Evaluate promptly and initiate antihypertensive treatment immediately 3
• Treatment should begin within 1 week at minimum, sooner if target organ damage is present 3

Lifestyle Modifications (Essential for All Patients)

Implement these interventions, which can reduce systolic blood pressure by 10-20 mm Hg: 2

• Sodium restriction to <1,500 mg/day (or at minimum reduce by 1,000 mg/day from current intake) 3, 1
• Increase dietary potassium to 3,500-5,000 mg/day through food sources 3, 1
• Weight loss to achieve ideal body weight (or minimum 1 kg reduction if overweight/obese) - this is among the most effective interventions 3, 1
• Aerobic exercise 90-150 minutes per week or dynamic resistance training 3, 1
• Limit alcohol consumption to ≤2 drinks/day for men, ≤1 drink/day for women, with alcohol-free days each week 3
• Adopt DASH dietary pattern rich in fruits, vegetables, whole grains, and low-fat dairy with reduced saturated fat 3, 4

First-Line Pharmacological Therapy

Preferred Initial Combinations

Start with a two-drug single-pill combination consisting of: 1, 2

1. RAS blocker (ACE inhibitor or ARB) PLUS
2. Dihydropyridine calcium channel blocker (e.g., amlodipine) OR
3. Thiazide-like diuretic (e.g., chlorthalidone)

Drug Selection Based on Comorbidities

• Chronic kidney disease or diabetes with albuminuria (UACR ≥30 mg/g): ACE inhibitor or ARB as mandatory first-line 3
• Established coronary artery disease: ACE inhibitor or ARB preferred 3
• Heart failure with reduced ejection fraction: Beta-blockers indicated in addition to standard therapy 3
• Atrial fibrillation: ARBs may reduce recurrence 3
• Prior myocardial infarction: Beta-blockers indicated 3

Critical Medication Pitfall to Avoid

Never combine two RAS blockers (ACE inhibitor + ARB + renin inhibitor) - this is potentially harmful and contraindicated 3, 1

Treatment Escalation for Uncontrolled Blood Pressure

If blood pressure remains above goal on initial two-drug combination:

Step 1: Triple Therapy

• Switch to single-pill combination of ACE inhibitor/ARB + calcium channel blocker + thiazide-like diuretic 1
• Reassess within 2-4 weeks after medication changes 2

Step 2: Resistant Hypertension (≥140/90 mm Hg on 3 drugs)

• Add spironolactone 25-50 mg daily as the preferred fourth agent 1, 2
• Before diagnosing resistant hypertension, exclude: medication non-adherence, white coat hypertension, and secondary causes 3, 5
• Screen for secondary causes if: unprovoked hypokalemia, onset of diastolic hypertension in patients ≥65 years, or refractory hypertension 3

Step 3: Refractory Hypertension (≥5 drugs)

• Consider evaluation for secondary causes including sleep apnea (20% prevalence in resistant hypertension), primary aldosteronism, or renal artery stenosis 3
• Optimize diuretic therapy and ensure complementary mechanisms of action 5

Blood Pressure Targets

• Adults <65 years: <130/80 mm Hg 3, 1, 2
• Adults ≥65 years: <130 mm Hg systolic (if tolerated) 3, 1, 2
• Optimal target range: 120-129 mm Hg systolic for most adults, with minimum acceptable target <140/90 mm Hg 2
• Apply "as low as reasonably achievable" principle if 120-129 mm Hg target is poorly tolerated rather than abandoning treatment 2

Monitoring and Follow-Up Schedule

• Normal BP (<120/80 mm Hg): Repeat evaluation annually 3
• Elevated BP or Stage 1 hypertension (low ASCVD risk): Reassess every 3-6 months 3
• After initiating or changing medications: Follow-up within 1 month (or 2-4 weeks) 3, 2
• After achieving target BP: Follow-up every 3-6 months 2
• Target achievement timeline: Blood pressure should reach goal within 3 months of initiating or modifying therapy 2

Strategies to Improve Adherence

• Prescribe once-daily dosing whenever possible - adherence declines significantly with multiple daily doses 2
• Strongly prefer single-pill combination therapy over separate pills to improve adherence and persistence 2
• Implement team-based care using electronic health records, telehealth, and community health workers 1
• Use motivational interviewing, goal setting, and self-monitoring with feedback 1
• Address barriers to medication-taking including cost and side effects 3

Lifelong Treatment Considerations

Maintain blood pressure-lowering drug treatment lifelong, even beyond age 85 years, if well tolerated 2. White coat hypertension transitions to sustained hypertension in 1-5% of patients annually, requiring ongoing monitoring 3.