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Isolated systolic hypertension in the elderly subject
1Service Cardiologie B, CHRU, Poitiers, France.
Insights
Treatment for isolated systolic hypertension in older adults significantly reduces stroke and cardiovascular events. This finding highlights the importance of managing high systolic blood pressure in the elderly population.
Area of Science:
- Gerontology
- Cardiovascular Medicine
- Hypertension Research
Background:
- Isolated systolic hypertension (ISH) in the elderly is a growing concern.
- Prevalence varies by demographics and healthcare access.
- ISH is an independent risk factor for cardiovascular morbidity and mortality.
Purpose of the Study:
- To summarize the current understanding of isolated systolic hypertension in the elderly.
- To review the hemodynamic and neurohormonal characteristics of elderly individuals with ISH.
- To discuss the prognostic implications and recent treatment findings for ISH.
Main Methods:
- Review of existing literature on isolated systolic hypertension in the elderly.
- Analysis of hemodynamic and neurohormonal changes associated with aging and hypertension.
- Evaluation of evidence from clinical studies, including the SHEP trial.
Main Results:
- Elderly individuals exhibit reduced cardiac output, renal and hepatic blood flow, diminished great vessel compliance, impaired baroreflex, and right-shifted cerebral autoregulation.
- Isolated systolic hypertension is a significant independent risk factor for cardiovascular events.
- The SHEP study demonstrated that treating ISH with diuretics, alone or with beta-blockers, significantly reduced stroke and major cardiovascular events.
Conclusions:
- Isolated systolic hypertension in the elderly is a critical condition requiring management.
- Treatment with diuretics and beta-blockers is effective in reducing cardiovascular risks.
- Further research is needed to evaluate other antihypertensive agents like ACE inhibitors and calcium antagonists.
Abstract:
Interest in isolated systolic hypertension in the elderly has increased in the last few years. The definition of this disorder remains controversial: according to most authors, the systolic blood pressure has to be above 160 mm Hg and the diastolic under 90 mm Hg. The prevalence depends on number of visits, as well as on sex, age and race. The elderly is characterized by haemodynamic and neurohormonal features, which have to be pointed out: cardiac output and renal blood flow as well as hepatic blood flow are significantly lower than those of younger adults; great vessels compliance is diminished, baroreflex is impaired and cerebral autoregulation curve is shifted towards the right. From a prognostic point of view, systolic hypertension is now recognized as an independent risk factor for cardio-vascular morbidity and mortality. Recently, the SHEP study has demonstrated that the treatment of isolated systolic hypertension with diuretics alone or associated with beta-blockers resulted in a significant reduction in the incidence of stroke and major cardio-vascular events. The effectiveness of angiotensin-converting enzyme inhibitors and calcium antagonists is still under evaluation.
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