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Related Concept Videos

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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Drug Dosing: Geriatric Patients01:15

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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...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

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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...
307
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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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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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

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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

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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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Related Experiment Video

Updated: Mar 13, 2026

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Frailty Screening and Management for Older Australians in General Practice: Mixed Methods Evaluation.

Jennifer R Job1, Caroline Nicholson1, Ruby Strauss1

  • 1Centre for Health System Reform and Integration, Mater Research-The University of Queensland, Level 8, Health Sciences Building, RBWH, Brisbane, 4006, Australia, 61 7 3365 5379.

Interactive Journal of Medical Research
|March 12, 2026
PubMed
Summary

Screening older Australians for frailty using the FRAIL Scale Tool in annual health assessments is feasible. This approach helps identify frail individuals and facilitates proactive management, improving health outcomes for the 75+ population.

Keywords:
FRAIL scalefrailty screeningimplementationolder adultsprimary care

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Area of Science:

  • Gerontology
  • Primary Care Medicine
  • Public Health

Background:

  • Frailty is a significant risk factor for adverse health outcomes in aging populations.
  • International guidelines advocate for frailty screening in primary care, yet it's not standard practice in Australia.
  • Early identification and intervention can halt or reverse frailty progression.

Purpose of the Study:

  • To investigate the prevalence of frailty among Australians aged 75 and older.
  • To assess the resources needed for frailty management.
  • To identify determinants for implementing frailty screening and management within the 75+ Health Assessment (75+HA).

Main Methods:

  • A mixed-methods evaluation was conducted in 24 Australian general practices.
  • The FRAIL (Fatigue, Resistance, Ambulation, Illnesses, Loss of weight) Scale Tool was integrated into the 75+HA.
  • Data collected included FRAIL scores, hospitalizations, interventions, staff perceptions, and qualitative interviews with staff and patients.

Main Results:

  • 15% of 1484 screened individuals (≥75 years) were frail, with frail individuals more likely to be female, older, and on more medications.
  • Frail patients had higher rates of nonelective hospitalizations compared to prefrail and robust individuals.
  • Common management recommendations included medication reviews, aged care support, and exercise; barriers included health, transport, cost, and time.

Conclusions:

  • Integrating the FRAIL Scale Tool into the 75+HA offers a funded opportunity for proactive frailty management in primary care.
  • The tool is valued for its simplicity and ease of integration; software integration would enhance adoption.
  • Further research is needed in diverse settings, including Aboriginal and Torres Strait Islander populations, to improve frailty prevention and management.