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[Circadian blood pressure variations in young and in older patients]
1Geriatrischen Klinik des Geriatrischen Zentrums, Klinikum Berlin-Buch, BRD.
Insights
Ambulatory blood pressure monitoring is crucial for accurately assessing hypertension in older adults, distinguishing true hypertension from white-coat effects and guiding treatment effectiveness.
Area of Science:
- Gerontology
- Cardiovascular Medicine
- Hypertension Research
Context:
- Elevated blood pressure is common in the elderly, sometimes misdiagnosed as 'pseudo-hypertension' due to white-coat effects or increased arterial stiffness.
- Normotensive elderly individuals exhibit higher systolic pressure and pulse amplitude than younger counterparts, with similar circadian patterns.
- Lifestyle factors, such as afternoon naps, can significantly impact blood pressure in the elderly.
Purpose:
- To evaluate the utility of ambulatory blood pressure monitoring (ABPM) in the elderly.
- To compare blood pressure patterns in normotensive elderly versus young adults.
- To assess blood pressure variability in elderly hypertensives on medication versus normotensive controls.
Summary:
- Ambulatory blood pressure monitoring (ABPM) offers accurate, day-long blood pressure assessment in the elderly, aiding in the diagnosis of 'pseudo-hypertension' and predicting cardiac damage.
- Elderly subjects, even when normotensive, show higher systolic pressure and pulse amplitude than younger individuals, though circadian rhythms are similar.
- Blood pressure variability was lower in elderly patients receiving antihypertensive therapy compared to normotensive elderly controls, with no severe nocturnal dips observed in either group.
Impact:
- ABPM is a reliable method for determining the necessity and efficacy of antihypertensive treatments in the elderly population.
- Understanding age-related blood pressure changes and the impact of lifestyle factors is vital for geriatric cardiovascular care.
- Accurate blood pressure assessment through ABPM can prevent misdiagnosis and optimize treatment strategies, improving patient outcomes.
Abstract:
Elevated blood pressure in the elderly is common despite they are normotensive. This "pseudo-hypertension" is probably a white-coat effect or depends on the increased arterial stiffness. Ambulant blood-pressure monitoring (by portable automated oscillometry) provides a reasonable accurate estimate of the blood pressure level throughout the day and better predicts cardiac end-organ damage. In normotensive elderly volunteers the systolic arterial pressure and the blood pressure amplitude was higher than in young normotensive subjects. The circadian profile of the two groups was comparable. Specific habits like an afternoon nap significantly influenced the blood pressure of the elderly. The blood pressure variability in geriatric hypertensives with antihypertensive therapy was smaller than in normotensive elderly controls. Any severe blood-pressure nadir at night was not registered in both groups. 24-hour ambulatory blood pressure monitoring is a careful method and should be used to determine the need and the effectiveness of antihypertensive treatment in the elderly.