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Dehydration in the elderly: a short review.

R J Lavizzo-Mourey

    Journal of the National Medical Association
    |October 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Dehydration is a common issue in older adults, often without typical causes. Age-related physiological changes and specific conditions like infections increase dehydration risk in the elderly.

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    Area of Science:

    • Gerontology
    • Internal Medicine
    • Clinical Nutrition

    Background:

    • Dehydration represents the most frequent fluid and electrolyte disturbance observed in the elderly population.
    • Elderly individuals often present dehydration without the typical etiological factors seen in younger populations.
    • Age-associated physiological alterations, including reduced total body water, blunted thirst sensation, impaired renal function, and diminished vasopressin efficacy, contribute to dehydration susceptibility.

    Purpose of the Study:

    • To elucidate the unique predisposing factors and common causes of dehydration in the elderly.
    • To highlight specific clinical scenarios in the elderly associated with dehydration, such as infections, high-protein tube feedings, cerebrovascular accidents, and medication-induced hypodypsia.
    • To emphasize the importance of accurate assessment and gradual correction of water deficits for effective treatment.

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    Main Methods:

    • This abstract is based on a review of existing literature and clinical observations regarding dehydration in the elderly.
    • Analysis of age-related physiological changes impacting fluid balance.
    • Identification of common and specific clinical triggers for dehydration in geriatric patients.

    Main Results:

    • The elderly are predisposed to dehydration due to age-related physiological changes affecting fluid regulation.
    • Common causes in this demographic include infections, specialized nutritional support (high-protein tube feedings), cerebrovascular accidents, and drug-induced thirst impairment (hypodypsia).
    • The absence of typical dehydration causes in many elderly patients underscores the need for a tailored diagnostic approach.

    Conclusions:

    • Dehydration is a significant clinical problem in the elderly, driven by intrinsic physiological vulnerabilities and specific health conditions.
    • Effective management necessitates a thorough assessment of the water deficit and a cautious, phased rehydration strategy.
    • Understanding these unique aspects is crucial for preventing and treating dehydration in geriatric care.