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Optimising diuretic therapy in elderly patients with hypertension
1University of Tennessee College of Medicine, Memphis, USA.
Insights
Diuretics are the most effective first-line treatment for hypertension in the elderly, reducing cardiovascular events like strokes and heart attacks. Despite evidence, their use has declined, but they remain the preferred choice over other antihypertensives.
Area of Science:
- Geriatrics
- Cardiology
- Pharmacology
Background:
- Hypertension is a primary risk factor for cardiovascular events in individuals over 60.
- Over 50% of acculturated elderly populations experience hypertension.
- Morbidity trials confirm treatment benefits across diverse elderly subgroups.
Purpose of the Study:
- To evaluate the efficacy of diuretic-based regimens for hypertension in the elderly.
- To compare diuretics with other antihypertensive classes for cardiovascular event reduction.
Main Methods:
- Analysis of morbidity trial data on elderly hypertension treatment.
- Focus on diuretic-based regimens, with or without potassium-sparing agents.
Main Results:
- Diuretic-based therapies significantly reduce strokes, coronary events, and hypertensive complications.
- Low-dose diuretics are well-tolerated and effective, mitigating toxicity concerns.
- Evidence supports diuretics as superior to other classes in reducing cardiovascular mortality.
Conclusions:
- Diuretics should be the initial drug class for treating hypertension in the elderly.
- Physicians should prioritize diuretics despite a declining trend in their prescription.
- Further evidence is needed to establish the superiority of other antihypertensives over diuretics.
Abstract:
Hypertension is the most important risk factor for cardiovascular events in the elderly and it is present in more than 50% of acculturated populations over 60 years of age. Morbidity trials have clearly demonstrated the benefits of treating hypertension in the elderly in all subgroups examined, including diabetics, those over 80 years of age, those with or without electrocardiographic abnormalities, and in both men and women. These reductions in strokes, coronary events, and other hypertensive complications have been seen primarily with diuretic-based regimens, with or without potassium-sparing therapy. However, in the 1990s physicians are initiating diuretics less often for older patients with hypertension in spite of this scientific evidence. Low doses of diuretics have been well tolerated, successful in recent morbidity trials, and avoid much of the concerns about theoretical toxicities from diuretics, although higher doses have also been shown to reduce cardiovascular events. Until calcium channel blockers, angiotensin converting enzyme inhibitors, alpha-blockers, or some other class of antihypertensive agent has been demonstrated to be at least as effective as diuretics in reducing cardiovascular events or mortality, diuretics should be the first drug class to consider for the treatment of hypertension in the elderly.