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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are not...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...

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Updated: Jun 23, 2026

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty
07:27

Exergaming in Older People Living with HIV Improves Balance, Mobility and Ameliorates Some Aspects of Frailty

Published on: October 6, 2016

Drug therapy in the elderly

J G Ouslander

    Annals of Internal Medicine
    |December 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Elderly individuals experience age-related physiological changes affecting drug absorption and response. Addressing these and other factors is crucial for safer and more effective medication management in older adults.

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    Therapeutic Massage for Psychological Well-being in Geriatric Oncology
    03:59

    Therapeutic Massage for Psychological Well-being in Geriatric Oncology

    Published on: May 22, 2026

    Area of Science:

    • Gerontology
    • Clinical Pharmacology
    • Pharmaceutics

    Background:

    • Aging leads to significant biologic and physiologic alterations, impacting drug pharmacokinetics.
    • Older adults present unique illness characteristics that complicate effective drug therapy beyond pharmacokinetic changes.
    • Factors such as physical, psychologic, and socioeconomic issues, alongside sensory and cognitive impairments, hinder healthcare access and adherence.

    Purpose of the Study:

    • To explore the multifaceted challenges in optimizing drug therapy for the elderly population.
    • To highlight the interplay between pharmacokinetic changes, unique geriatric conditions, and non-clinical factors affecting medication efficacy.
    • To provide recommendations for clinical practice and future research to enhance medication safety and effectiveness in older adults.

    Main Methods:

    • Review of age-related changes in pharmacokinetic parameters (volume of distribution, half-life, systemic clearance, receptor sensitivity).
    • Analysis of how geriatric-specific illness features and psychosocial factors influence drug therapy outcomes.
    • Examination of the impact of cognitive, visual, and auditory impairments on patient education and compliance.

    Main Results:

    • Age-related changes in pharmacokinetics are a key consideration in elderly drug therapy.
    • Non-pharmacokinetic factors, including illness presentation, socioeconomic status, and cognitive function, significantly impact treatment.
    • Older adults exhibit increased susceptibility to adverse drug reactions, compounded by challenges in education and compliance.

    Conclusions:

    • Effective drug therapy in the elderly requires a comprehensive approach beyond pharmacokinetic adjustments.
    • Recognizing and addressing physical, psychologic, socioeconomic, and cognitive factors is essential for improving medication adherence and outcomes.
    • Implementing evidence-based clinical practices and directing future research are vital for enhancing drug safety and efficacy in geriatric patients.