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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 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...
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...
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 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 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...

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Related Experiment Video

Updated: May 31, 2026

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
14:39

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Published on: April 22, 2022

Polypharmacy in older adults.

Gerri Kaufman1

  • 1Department of Health Sciences, University of York, York. gerri.kaufman@york.ac.uk

Nursing Standard (Royal College of Nursing (Great Britain) : 1987)
|June 29, 2011
PubMed
Summary
This summary is machine-generated.

Polypharmacy, the use of multiple medications in older adults, increases risks of adverse drug reactions and interactions due to physiological changes. Strategies for optimal prescribing are essential for managing medication complexity in this population.

Related Experiment Videos

Last Updated: May 31, 2026

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
14:39

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults

Published on: April 22, 2022

Area of Science:

  • Gerontology
  • Clinical Pharmacology
  • Internal Medicine

Background:

  • Older adults experience physiological changes affecting drug metabolism and response.
  • Polypharmacy is common in older populations, increasing medication-related risks.

Purpose of the Study:

  • To explore the challenges of polypharmacy in older adults.
  • To discuss the impact of aging on pharmacokinetics and pharmacodynamics.
  • To review strategies for optimizing medication use in the elderly.

Main Methods:

  • Literature review on aging, pharmacokinetics, pharmacodynamics, and polypharmacy.
  • Analysis of risks associated with polypharmacy, including adverse drug reactions and interactions.
  • Examination of current prescribing strategies for older patients.

Main Results:

  • Aging alters organ function, affecting drug absorption, distribution, metabolism, and excretion.
  • Polypharmacy significantly elevates the likelihood of adverse drug events and drug-drug interactions.
  • Evidence-based strategies can improve prescribing safety and efficacy in older adults.

Conclusions:

  • Addressing polypharmacy requires understanding age-related physiological changes.
  • Mitigating risks involves careful medication review and deprescribing.
  • Optimizing pharmacotherapy in older adults is crucial for patient safety and quality of care.