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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

286
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...
286
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

264
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...
264
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

719
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...
719
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

271
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...
271
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

232
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...
232
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

243
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...
243

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Related Experiment Videos

Malignant disease and the elderly.

V Mor1

  • 1Center for Long Term Care Gerontology, Brown University, Providence, Rhode Island 02912.

Ciba Foundation Symposium
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

Cancer disproportionately affects older adults, with incidence rising sharply with age. This review examines how elderly cancer patients respond to symptoms and treatment compared to younger individuals.

Related Experiment Videos

Area of Science:

  • Gerontology
  • Oncology
  • Public Health

Background:

  • Cancer is predominantly a disease of aging, with over 50% of diagnoses and 60% of deaths occurring in individuals over 65.
  • Cancer incidence and prevalence increase significantly with age, particularly in the 85+ and 70+ age groups.
  • The aging global population, especially the 'old-old' demographic, will lead to a substantial rise in the number of elderly cancer patients, impacting healthcare systems and social norms.

Purpose of the Study:

  • To review trends in cancer among the elderly.
  • To examine how older adults respond to cancer symptoms and treatment.
  • To compare the treatment received by elderly cancer patients with that of younger patients.

Main Methods:

  • Review of existing literature and research projects on cancer in older adults.
  • Analysis of age-specific cancer prevalence and incidence rates.
  • Exploration of the relationship between age, disease stage, diagnosis, treatment aggressiveness, and patient response.

Main Results:

  • Cancer incidence and prevalence rise sharply with age.
  • The aging population will increase the number of elderly cancer patients.
  • Older adults' responses to cancer symptoms and treatments require further investigation.

Conclusions:

  • The increasing number of elderly cancer patients presents significant challenges for healthcare.
  • Understanding the unique aspects of cancer care for older adults, including symptom response and treatment disparities, is crucial.
  • Further research is needed to ensure equitable and effective cancer treatment for the aging population.