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Related Concept Videos

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 Excretion01:18

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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

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

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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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Disorders of Erythrocytes01:27

Disorders of Erythrocytes

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Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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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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Updated: Oct 8, 2025

Author Spotlight: Developing a Point-of-Care Hemoglobin Estimation Method for Anemia Management
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Unexplained Anemia in the Elderly.

Jose C Alvarez-Payares1, Sebastián Rivera-Arismendy1, Pablo Ruiz-Bravo2

  • 1Internal Medicine, University of Antioquia, Medellín, COL.

Cureus
|January 5, 2022
PubMed
Summary
This summary is machine-generated.

Anemia is common in older adults and can signal various health issues, including myelodysplastic syndromes. Identifying the cause is crucial for treatment and improving outcomes in elderly patients.

Keywords:
anemiachronic inflammatory diseasesclonal cytopeniaelderly patientmyelodysplastic syndromes

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Area of Science:

  • Gerontology
  • Hematology
  • Internal Medicine

Background:

  • Anemia is a frequent diagnosis in elderly patients, often indicating underlying reactive or clonal conditions.
  • Older age is the most common presentation for myelodysplastic syndromes (MDS).
  • Causes of anemia in the elderly include inflammation, senescence, comorbidities, nutritional deficiencies, and primary bone marrow issues.

Purpose of the Study:

  • To explore the multifactorial origins of anemia in the elderly.
  • To highlight the diagnostic challenges and impact on quality of life.
  • To discuss unexplained anemia (UA) or clonal cytopenia of unknown significance (CCUS).

Main Methods:

  • Review of diagnostic approaches for anemia in older adults.
  • Analysis of potential etiologies, including inflammatory states and bone marrow conditions.
  • Classification of anemia when no clear cause is identified.

Main Results:

  • Anemia in the elderly is multifactorial and presents a clinical challenge.
  • Approximately 30% of anemia cases in the elderly remain unexplained.
  • Unexplained cytopenia may indicate underlying myeloid neoplasms.

Conclusions:

  • Anemia in the elderly is associated with poorer cognitive and functional outcomes.
  • Early diagnosis and identification of etiology are vital for effective treatment.
  • Anemia in older adults is a significant predictor of increased mortality.