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Related Concept Videos

Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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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Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

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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...
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Evaluating the Function of the Foot Core System in the Elderly
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Neuropathy of the elderly.

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  • 1Laboratory of Clinical Neurophysiology (Professor Lionel-Naccache), Salpetriere Hospital, 47, boulevard de l'hôpital, 75013 Paris, France.

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This summary is machine-generated.

Peripheral nervous system aging is common in older adults, affecting nerve function but not quality of life. Diabetes is the leading cause of neuropathy in the elderly, increasing fall risks.

Keywords:
DiabetesElderlyLate OnsetNeuropathyNeurophysiology

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Area of Science:

  • Neurology
  • Geriatrics
  • Nerve Disorders

Background:

  • Peripheral nervous system aging is a common condition in individuals over 65.
  • Age-related changes include decreased nerve conduction, altered reflex responses, and sensory deficits.

Purpose of the Study:

  • To describe the characteristics and common causes of peripheral nervous system aging.
  • To highlight the clinical implications of peripheral neuropathy in the elderly population.

Main Methods:

  • Review of existing literature on peripheral nervous system aging and neuropathy in the elderly.
  • Analysis of etiological factors, clinical manifestations, and functional impact.

Main Results:

  • Two-thirds of individuals over 65 exhibit signs of peripheral nervous system aging, with increased prevalence beyond 80 years.
  • Diabetes is the most frequent cause of neuropathy in this age group, followed by idiopathic cases.
  • Despite neurological changes, quality of life is generally unaffected, but neuropathy increases fall frequency and risk of bone damage.

Conclusions:

  • Peripheral nervous system aging is a prevalent phenomenon with distinct characteristics in the elderly.
  • While generally mild, neuropathy in older adults necessitates attention due to potential risks like falls.
  • Early detection of causes like late-onset hereditary neuropathies and diabetes management are crucial.