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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...

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...

Nursing Assessment of the Genitourinary System I: Health History

Nursing Assessment of the Genitourinary System I: Health History

The genitourinary system is critical to maintaining fluid balance, waste elimination, and reproductive function. Nurses play a vital role in assessing this system, beginning with a thorough health history. This process involves gathering patient information, identifying risk factors, and recognizing symptoms of genitourinary disorders. Early detection is vital for timely interventions and management.1. Gathering Patient InformationA complete health history includes the patient’s personal,...

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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 Distribution

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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...

Pharmacodynamics in Geriatric Patients: Effects of Age

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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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Related Experiment Video

Updated: Jun 6, 2026

Multi-Modal Home Sleep Monitoring in Older Adults

Multi-Modal Home Sleep Monitoring in Older Adults

Published on: January 26, 2019

[Nocturia in elderly patients].

A V Kurenkov, S B Petrov

Advances in Gerontology = Uspekhi Gerontologii

|December 9, 2010

Summary

Nocturia in overactive bladder (OAB) patients stems from reduced nocturnal bladder capacity in younger individuals and nocturnal polyuria in older adults. These causes are independent of age, impacting sleep quality.

Area of Science:

Urology
Gerontology
Sleep Medicine

Context:

Overactive bladder (OAB) affects numerous individuals, often leading to nocturia.
Understanding age-specific causes of nocturia is crucial for effective OAB management.

Purpose:

To comparatively assess the etiological factors of nocturia in young versus elderly patients diagnosed with overactive bladder.
To analyze the relationship between age, nocturia, and specific urodynamic indices.

Summary:

A study of 245 OAB patients (aged >18) revealed nocturia is primarily caused by polyuria and reduced nocturnal bladder capacity, irrespective of age.
Younger patients (<60) experienced nocturia due to decreased nocturnal bladder capacity (IBC), while older patients (>70) predominantly suffered from nocturnal polyuria (NPI).

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Last Updated: Jun 6, 2026

Multi-Modal Home Sleep Monitoring in Older Adults

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High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

Published on: October 20, 2023

Impact:

Provides age-stratified insights into nocturia causes in OAB, aiding targeted therapeutic strategies.
Highlights the importance of differentiating between nocturnal polyuria and reduced bladder capacity for optimizing OAB treatment outcomes.