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Related Experiment Videos

[Pharmacotherapy in the aged].

W Huber, K Turnheim

    Wiener Klinische Wochenschrift
    |March 20, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Adverse drug reactions in older adults stem from polypharmacy and altered pharmacokinetics, not typically pharmacodynamics. Drug dosages require adjustment based on age-related changes in drug metabolism, excretion, and distribution.

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    Area of Science:

    • Geriatric pharmacology
    • Drug metabolism and pharmacokinetics

    Context:

    • Older adults experience a higher incidence of adverse drug reactions.
    • Polypharmacy and age-related physiological changes contribute to this increased risk.

    Purpose:

    • To explain the pharmacokinetic and pharmacodynamic factors influencing drug response in the elderly.
    • To provide guidance on adjusting drug dosages for geriatric patients.

    Summary:

    • Age-related declines in drug metabolism and renal excretion increase plasma half-lives and reduce total clearance.
    • Changes in body composition (decreased water, increased fat) alter drug distribution volumes.
    • Maintenance doses should be calculated from clearance rates, and initial doses from distribution volumes.

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    Impact:

    • Understanding these changes is crucial for optimizing drug therapy and minimizing adverse events in the aged.
    • Highlights the lack of evidence for "geriatric drugs" aimed at retarding aging.