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Related Concept Videos

Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

298
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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Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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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...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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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...
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Stages of General Anesthesia01:22

Stages of General Anesthesia

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Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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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...
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Related Experiment Video

Updated: Mar 8, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
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General Aviation Pilots Over 70 Years Old.

Alpo Vuorio, Saryani Asmayawati, Bruce Budowle

    Aerospace Medicine and Human Performance
    |January 19, 2017
    PubMed
    Summary

    Elderly general aviation pilots aged 70+ face risks from multiple medications, particularly antihistamines and antidepressants. Investigations into fatal accidents involving older pilots should consider polypharmacy.

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    Area of Science:

    • Aviation Medicine
    • Gerontology
    • Toxicology

    Background:

    • General aviation pilots in the U.S. frequently fly beyond age 70.
    • Current medical protocols lack specific requirements for pilots over 70.
    • Recent U.S. Senate reforms may further reduce medical certification stringency for older pilots.

    Purpose of the Study:

    • To analyze risk factors associated with fatal accidents in elderly general aviation pilots.
    • To assess the impact of medical parameters and polypharmacy on accident outcomes in pilots aged 70 and above.

    Main Methods:

    • Analysis of accident rates, medical, autopsy, and toxicological data from the U.S. National Transportation Safety Board (NTSB) general aviation accident database.
    • Focus on fatal accidents involving pilots aged 70-92 years during the 2003-2012 period.

    Main Results:

    • 114 fatal accidents involved pilots aged 70-92 (113 male, 1 female) between 2003-2012.
    • Polypharmacy (3+ drugs) was detected in 13% of deceased pilots.
    • First-generation antihistamines and antidepressants were the most common performance-affecting medications found.

    Conclusions:

    • Critical medical factors, including polypharmacy, contribute to fatal accidents in elderly pilots.
    • Polypharmacy warrants consideration in periodic health evaluations and accident investigations of older pilots.