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Related Concept Videos

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...
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 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 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...
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...
Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration01:23

Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration

Drug elimination from the body primarily occurs through metabolic and excretion pathways. Hepatic metabolism transforms lipophilic drugs into hydrophilic forms for excretion, typically via enzymatic processes classified as phase I (modification) and phase II (conjugation). Renal excretion eliminates drugs and metabolites through filtration and secretion in the kidneys. Impairment in liver or kidney function can hinder these processes, delaying drug clearance and extending the drug’s half-life.

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Pharmacotherapy in the extreme longevity.

G Fradà1, E Bennati, E Cardillo

  • 1Geriatrics Unit, ASL No. 6, Ospedale dei Bianchi Vittorio Emanuele, Via Don Giovanni Colletto, I-90034 Corleone, Palermo, Italy. gfrada2003@libero.it

Archives of Gerontology and Geriatrics
|October 7, 2008
PubMed
Summary

Centenarians often use multiple medications, but their daily drug consumption is lower than that of the general elderly population. Adverse drug events (ADE) were observed in 15.2% of these individuals.

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Area of Science:

  • Gerontology
  • Pharmacology
  • Public Health

Background:

  • Increased longevity leads to a higher prevalence of chronic-degenerative diseases and polypharmacy.
  • Understanding drug consumption patterns in the ultra-longevity population is crucial for managing health.
  • Centenarians represent a unique demographic for studying long-term health and medication use.

Purpose of the Study:

  • To evaluate the drug consumption patterns of centenarians.
  • To compare medication use with the clinical conditions of the ultra-longevity population.
  • To identify factors influencing drug use and adverse drug events (ADE) in centenarians.

Main Methods:

  • A study involving 602 centenarians.
  • Data collection included clinical history, objective examinations, and clinico-functional evaluations.
  • Pharmacological anamnesis was obtained from 555 participants.

Main Results:

  • 95% of centenarians used regular pharmacological therapy, with a mean daily consumption of 2.7 drugs.
  • 20.7% of centenarians were in good clinical condition; 75.7% of these used 1-3 drugs daily.
  • Adverse drug events (ADE) occurred in 15.2% of participants, often associated with polypharmacy.

Conclusions:

  • Mean daily drug consumption in centenarians was lower than in the general elderly population.
  • Factors such as past health, physician attention, and caregiver involvement may influence medication use.
  • Managing polypharmacy and ADE is essential even in the ultra-longevity demographic.