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Hypertension in the elderly: haemodynamic, fluid volume and endocrine findings
Insights
Elderly patients with essential hypertension exhibit accelerated aging effects on hemodynamics and fluid volume. Essential hypertension appears to hasten the natural physiological processes associated with aging.
Area of Science:
- Gerontology
- Cardiovascular Medicine
- Nephrology
Background:
- Essential hypertension is a common condition in older adults.
- Aging is associated with natural physiological changes in hemodynamics and fluid balance.
Purpose of the Study:
- To compare hemodynamic, fluid volume, and endocrine profiles in elderly and younger hypertensive patients.
- To investigate if essential hypertension accelerates aging-related physiological changes.
Main Methods:
- Systemic and renal hemodynamics, intravascular volume, catecholamines, and plasma renin activity were measured.
- 18 elderly hypertensive patients (age >60) were matched with younger hypertensive patients (age <42).
Main Results:
- Elderly patients showed lower cardiac output, impaired myocardial reserve, reduced aortic elasticity, and higher peripheral resistance.
- Elderly patients had contracted intravascular volume and elevated noradrenaline levels compared to younger counterparts.
- These age-related effects were less pronounced in normotensive subjects.
Conclusions:
- Essential hypertension accelerates the natural aging processes affecting hemodynamics, fluid volume, and endocrine function.
- The findings suggest a pathophysiological interaction between hypertension and aging.
Abstract:
1. Systemic and renal haemodynamics, intravascular volume, circulating catecholamines and plasma renin activity were measured in 18 patients with established essential hypertension who were older than 60 years of age. Each patient was matched with respect to mean arterial pressure, body surface area, race and sex with a patient that was younger than 42 years of age. 2. When compared with the younger group, elderly patients had a lower cardiac output, impaired myocardial reserve, lesser aortic elasticity, higher total peripheral resistance, more contracted intravascular volume and higher circulating noradrenaline levels. 3. Similar effects of age, although less pronounced, have been reported in normotensive subjects. We conclude that essential hypertension is a pathophysiological process that seems to accelerate the natural physiological haemodynamic, fluid volume and endocrine processes of aging.