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The place of diuretics in preventing cardiovascular events
1The University of Texas Southwestern Medical Center, Dallas, TX 75235-8899, USA. norman.kaplan@utsouthwestern.edu
Insights
Low-dose diuretics are a recommended first-line treatment for hypertension, offering significant cardiovascular protection, especially in older adults. They are well-tolerated, with minimal side effects, and enhance the effectiveness of other antihypertensive medications.
Area of Science:
- Nephrology
- Cardiology
- Pharmacology
Background:
- Diuretics are recommended for initial antihypertensive therapy by major guidelines.
- Renal dysfunction and impaired sodium excretion are implicated in hypertension pathogenesis.
- Subtle renal insufficiency is a common consequence of uncontrolled hypertension.
Purpose of the Study:
- To review the rationales and evidence supporting the use of low-dose diuretics in hypertension management.
- To highlight the benefits of diuretics as monotherapy and in combination with other antihypertensive agents.
Main Methods:
- Review of existing clinical guidelines and randomized controlled trials.
- Analysis of comparative trials evaluating diuretic-based therapy versus newer agents.
- Assessment of diuretic effects on cardiovascular morbidity and mortality.
Main Results:
- Diuretic-based therapy significantly reduces cardiovascular morbidity and mortality, particularly in elderly patients.
- Diuretics provide comparable cardiovascular protection to newer antihypertensive agents.
- Low-dose diuretics enhance the efficacy of all other classes of antihypertensive drugs.
Conclusions:
- Low-dose diuretics are a rational and effective choice for initial antihypertensive therapy.
- Their ability to enhance other agents makes them crucial for achieving lower blood pressure goals.
- Minimal side effects at low doses contribute to their favorable safety profile.
Abstract:
Low-dose diuretics are recommended for the initial choice of antihypertensive therapy in the 7th US Joint National Committee report and are accepted as an appropriate choice among other classes of drugs in the 2003 European Society of Hypertension guidelines. The rationales for the use of low-dose diuretics include the following: Renal dysfunction interfering with normal natriuresis is likely a fundamental defect in the pathogenesis of hypertension. Subtle renal insufficiency that interferes with sodium excretion is a common consequence of uncontrolled hypertension. Diuretic-based therapy has been clearly documented in placebo-controlled, randomized trials to reduce cardiovascular morbidity and mortality, particularly in the treatment of elderly hypertensives.In multiple comparative trials, diuretic-based therapy has been shown to provide equal cardiovascular protection to that provided by newer agents. Diuretics enhance the antihypertensive efficacy of all other classes of agents. As lower blood pressure goals of therapy have been found to be needed, diuretic enhancement of other agents' efficacy has become even more essential. With such low doses, side effects are minimal in degree and infrequent in appearance.
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