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Step-down treatment of mild systemic hypertension
The American Journal of Cardiology
|May 1, 1984
Summary
Reducing chlorthalidone dosage for mild hypertension can maintain blood pressure control and decrease side effects. Some patients may be able to discontinue therapy, suggesting intermittent treatment is possible.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Controlling diastolic blood pressure (BP) is crucial for managing hypertension.
- Previous research indicates that 6 months of BP control can reduce medication needs in severe hypertension.
Purpose of the Study:
- To investigate the effects of stepwise dose reduction and discontinuation of chlorthalidone in patients with mild systemic hypertension.
- To assess the long-term efficacy and safety of reduced chlorthalidone dosage.
Main Methods:
- 67 patients with mild hypertension (diastolic BP 92-104 mm Hg) had their chlorthalidone dosage reduced stepwise.
- Diastolic BP was maintained below 85 mm Hg for 6 months before dose reduction.
- Patients were followed for 48 months after dose adjustments.
Main Results:
- A chlorthalidone dose of 25 mg/day was as effective as 50 mg in controlling diastolic BP.
- Reducing the dose to 12.5 mg/day caused a diastolic BP increase in only 8 patients.
- Annoying symptoms and metabolic side effects were reduced or eliminated.
- Chlorthalidone therapy was discontinued in 36 of 67 patients.
Conclusions:
- Stepwise dose reduction of chlorthalidone is effective in maintaining blood pressure control in mild hypertension.
- Lower doses of chlorthalidone significantly reduce side effects.
- Intermittent therapy may be a viable option for some patients with mild hypertension, reducing the need for continuous lifelong treatment.
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