Management of Resistant Hypertension

Diagnosis and Confirmation

• The American Heart Association recommends confirming true resistant hypertension by performing 24-hour ambulatory blood pressure monitoring to exclude white-coat effect and assess medication adherence 1, 2
• Evaluation for secondary causes of hypertension, such as endocrine disorders, renal artery stenosis, and sleep apnea, is necessary 3

Lifestyle Modifications

• The American Heart Association suggests optimizing lifestyle modifications, including sodium restriction to less than 2400 mg/day 1, 4
• Weight loss and regular exercise are also recommended 1
• Adequate sleep, defined as at least 6 hours of uninterrupted sleep, is essential 1

Treatment Algorithm

• The European Society of Cardiology recommends adding spironolactone 25mg daily as the fourth agent for patients with resistant hypertension 1, 4, 6
• Spironolactone has demonstrated superior efficacy as a fourth-line agent in resistant hypertension 5
• Monitoring serum potassium and renal function is crucial, especially when combining spironolactone with an ARB 6

Special Considerations

• The American College of Cardiology recommends evaluating for target organ damage, including cardiac, renal, ocular, and peripheral vascular damage 1, 2
• Assessing renal function before adding spironolactone, particularly with existing RAS blockade, is necessary 6

Monitoring Recommendations

• The European Heart Journal recommends monitoring blood pressure response within 2-4 weeks of medication adjustment 3
• Checking serum potassium and renal function 1-2 weeks after initiating spironolactone is essential 6