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Drug Dosing: Geriatric Patients

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...

The Effect of Aging on Tissues

The Effect of Aging on Tissues

Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...

Pharmacodynamics in Geriatric Patients: Effects of Age

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...

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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...

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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 Distribution

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...

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Related Experiment Video

Updated: May 9, 2026

Evaluating the Function of the Foot Core System in the Elderly

Evaluating the Function of the Foot Core System in the Elderly

Published on: March 11, 2022

[The decreases in motor function in the elderly].

Nobuyuki Kawate¹, Masazumi Mizuma

¹Department of Rehabilitation Medicine, Showa University School of Nursing and Rehabilitation Science.

Nihon Rinsho. Japanese Journal of Clinical Medicine

|July 17, 2013

Summary

This summary is machine-generated.

Motor function declines in older adults impact daily activities and mobility. Early rehabilitation is crucial to prevent disuse syndrome, a serious condition leading to bed confinement and increased health risks.

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Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

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Published on: July 5, 2017

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Last Updated: May 9, 2026

Evaluating the Function of the Foot Core System in the Elderly

Evaluating the Function of the Foot Core System in the Elderly

Published on: March 11, 2022

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Area of Science:

Gerontology
Neurology
Physical Therapy

Context:

Aging leads to individual variations in motor function decline.
Reduced motor function affects activities of daily living (ADL) and locomotion.
Age-related decrease in physiological reserve capacity is a key factor.

Purpose:

To highlight the importance of understanding motor function in the elderly.
To emphasize the risks associated with age-related motor decline.
To advocate for early intervention and rehabilitation.

Summary:

Motor function deficits in the elderly vary significantly among individuals.
These declines can impair the ability to perform daily tasks and ambulate.
Disuse syndrome, characterized by becoming bedridden and vulnerable to illness, can result from decreased reserve capacity with aging.

Impact:

Educating emergency medical care workers on geriatric motor function is essential.
Prioritizing prevention of disuse syndrome through early rehabilitation is critical.
Improving functional independence and quality of life for the aging population.