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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...

Development of Human Microbiota

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The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...

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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...

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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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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Updated: May 10, 2026

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

Published on: September 14, 2013

Clostridium difficile infection in the elderly.

Stefano Di Bella¹, Alessandro Capone, Maria Musso

¹National Institute for Infectious Diseases L. Spallanzani, Rome, Italy.

Le Infezioni in Medicina

|June 19, 2013

Summary

This summary is machine-generated.

Clostridioides difficile infections (CDI) are increasing in the elderly, leading to higher morbidity and mortality. Understanding immune responses and optimizing prevention and treatment are crucial for this vulnerable population.

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Culturing and Maintaining Clostridium difficile in an Anaerobic Environment

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Published on: September 14, 2013

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291

Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291

Published on: December 10, 2016

Area of Science:

Geriatric Medicine
Infectious Diseases
Immunology

Background:

Clostridioides difficile infection (CDI) incidence is rising in elderly populations.
CDI in older adults is linked to greater morbidity and mortality compared to younger individuals.
Immunosenescence may play a role, but protective immune responses against CDI are not fully understood.

Purpose of the Study:

To review the epidemiology, diagnostics, and management of CDI in geriatric patients.
To highlight the increased risk and mortality associated with CDI in the elderly.
To emphasize the need for targeted prevention and treatment strategies for elderly CDI patients.

Main Methods:

This is a review article.
Literature search on CDI in the elderly, focusing on epidemiology, diagnosis, and management.
Analysis of existing data on disease spectrum and outcomes in geriatric populations.

Main Results:

CDI poses a significant threat to the elderly, with higher mortality rates.
Gastroenteritis-associated deaths are frequently attributed to CDI in older individuals.
Elderly individuals are a high-risk group for CDI.

Conclusions:

Efforts to prevent CDI and optimize treatment in the elderly are essential.
Further research into immune responses in aging individuals may reveal protective mechanisms.
Comprehensive management strategies are needed to combat CDI in the geriatric population.