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Diuretics and their side effects. Dilemma in the treatment of hypertension
1Hypertension Research Center, Indiana University School of Medicine, Indianapolis 46223.
Insights
Diuretics, a traditional hypertension treatment, show mixed results in reducing cardiovascular disease mortality. This review critically appraises their efficacy, side effects, and alternative therapies for better patient outcomes.
Area of Science:
- Cardiology
- Pharmacology
- Nephrology
Background:
- Diuretics have been a cornerstone of hypertension management.
- Clinical trials using diuretics as initial therapy show reduced vascular disease but not coronary artery disease mortality.
- This necessitates a reevaluation of diuretic use in antihypertensive therapy.
Purpose of the Study:
- To review the efficacy of diuretics in lowering blood pressure.
- To identify patient populations most likely to respond to diuretic therapy.
- To examine the cardiac, metabolic, hemodynamic, and symptomatic side effects of diuretics.
Main Methods:
- Literature review and critical appraisal of existing clinical trial data.
- Analysis of hemodynamic, cardiac, metabolic, and symptomatic effects of diuretics.
- Examination of alternative antihypertensive therapies and treatment guidelines.
Main Results:
- Diuretics effectively reduce blood pressure but have shown inconsistent effects on coronary artery disease mortality.
- Specific patient subgroups may exhibit differential responses to diuretics.
- Diuretic therapy is associated with various cardiac, metabolic, and hemodynamic side effects.
Conclusions:
- The traditional stepped-care approach using diuretics requires reevaluation.
- Understanding individual response and side effect profiles is crucial for optimizing diuretic therapy.
- Alternative antihypertensive strategies should be considered for comprehensive cardiovascular disease risk reduction.
Abstract:
Diuretics have traditionally been the keystone of antihypertensive therapy. A variety of clinical trials, designed to examine the benefit of blood pressure reduction in decreasing morbidity and mortality from hypertension-related cardiovascular disease, have surprisingly failed to show a decrease in coronary artery disease death rate, although other forms of vascular disease were impressively reduced. These trials have consistently used diuretics as the initial therapeutic choice. Such observations have stimulated a reevaluation of the "stepped-care" approach and a critical appraisal of diuretic effects. This review examines the efficacy of diuretics in reducing blood pressure and attempts to identify individuals most likely to respond to these agents. The side effects of diuretic therapy are reviewed in hemodynamic, cardiac, metabolic, and symptomatic terms, but because some of these aspects of diuretic or antihypertensive therapy are detailed elsewhere in this monograph, the present discussion focuses on cardiac, metabolic, hemodynamic, and symptomatic effects. Finally, alternative therapeutic options and guidelines for therapy are outlined.