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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

328
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...
328
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

291
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...
291
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

765
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...
765
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

302
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...
302
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

287
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...
287
Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

14.2K
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
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Experimental Model to Evaluate Resolution of Pneumonia
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[Infection in the elderly--what is different?].

H Werner1, J Kuntsche

  • 1Ev. Krankenhaus Elisabethenstift gGmbH Landgraf-Georg-Str. 100 64287 Darmstadt. dr_werner@yahoo.de

Zeitschrift Fur Gerontologie Und Geriatrie
|December 29, 2000
PubMed
Summary

Infections in elderly patients differ significantly from younger populations due to age-related immune changes. Prompt diagnosis and tailored antibiotic therapy are crucial for managing these complex bacterial infections and improving outcomes.

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Area of Science:

  • Geriatrics
  • Infectious Diseases
  • Immunology

Context:

  • Infectious diseases pose a significant threat to the elderly, increasing morbidity and mortality.
  • Infections in older adults present unique challenges due to age-related immunological alterations, different epidemiology, and comorbidities.

Purpose:

  • To discuss the distinct aspects of infectious diseases in the elderly.
  • To highlight the differences in presentation, diagnosis, and management compared to younger populations.

Summary:

  • Bacterial infections, particularly pneumonia, urinary tract infections (UTIs), and pressure ulcer infections, are common in the elderly, with higher incidence in nursing home residents.
  • Elderly patients may exhibit non-specific symptoms and blunted responses (e.g., reduced fever, absent leukocytosis), complicating diagnosis.
  • Accurate diagnosis requires clinical suspicion, prompt investigation including blood cultures, and immediate empiric antibiotic therapy considering site, acquisition (community vs. nosocomial), and local resistance patterns.

Impact:

  • Early recognition and appropriate treatment of infections in the elderly can reduce severe complications like bacteremia and improve survival rates.
  • Understanding the unique clinical presentation and diagnostic challenges is vital for geriatricians to prevent life-threatening delays in care.
  • Tailoring antibiotic selection based on pharmacokinetic properties and side effect profiles suitable for elderly patients is essential for effective management.