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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

12
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...
12
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

14
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...
14
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

6
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...
6
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

9
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...
9
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

3
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...
3
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

10
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...
10

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Related Experiment Video

Updated: Oct 7, 2025

Assessment of Dependence in Activities of Daily Living Among Older Patients in an Acute Care Unit
06:52

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Delirium in geriatric patients.

Bernhard Iglseder1, Thomas Frühwald2, Christian Jagsch3

  • 1Department of Geriatric Medicine, Salzburg University Hospital-Campus Christian-Doppler-Klinik, and Paracelsus Medical University, Ignaz-Harrer-Straße 79, 5020, Salzburg, Austria. b.iglseder@salk.at.

Wiener Medizinische Wochenschrift (1946)
|January 10, 2022
PubMed
Summary

Delirium, a common cognitive disorder in older adults, is serious and costly. Multicomponent approaches are promising for managing this condition, as pharmacological interventions lack universal effectiveness.

Keywords:
Acute confusional stateCognitive disordersEncephalopathyOlder peoplePrevention

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Area of Science:

  • Geriatric Medicine
  • Neuroscience
  • Cognitive Disorders

Background:

  • Delirium is the most frequent acute cognitive impairment in elderly patients.
  • It is a life-threatening condition, frequently underdiagnosed, and associated with significant costs.
  • Advanced age and pre-existing neurocognitive disorders are primary risk factors.

Purpose of the Study:

  • To review current clinical practices for managing delirium in geriatric patients.
  • To cover etiology, pathophysiology, diagnosis, prognosis, treatment, and prevention strategies.
  • To highlight the challenges and potential solutions for this complex condition.

Main Methods:

  • Review of current clinical practices and literature.
  • Analysis of etiological factors, including medical illness and adverse drug reactions.
  • Discussion of diagnostic criteria and prognostic indicators.

Main Results:

  • Delirium has multifactorial causes and is often linked to acute medical issues or complications.
  • Diagnosis is primarily clinical, relying on specific symptom presentation.
  • Pharmacological treatments have not shown unanimous efficacy for prevention or treatment.

Conclusions:

  • Multicomponent management strategies are most effective for addressing the complex needs of patients with delirium.
  • Early recognition and intervention are crucial for improving outcomes.
  • Further research into non-pharmacological and integrated care approaches is warranted.