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Related Concept Videos

Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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...
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

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 not...

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Thyroid dysfunction in the elderly.

Kristien Boelaert1

  • 1School of Clinical and Experimental Medicine, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK. k.boelaert@bham.ac.uk

Nature Reviews. Endocrinology
|February 27, 2013
PubMed
Summary
This summary is machine-generated.

Thyroid dysfunction is common in older adults, presenting diagnostic challenges due to non-specific symptoms and confounding factors. Early diagnosis and treatment are vital for managing its impact on major organ systems.

Related Experiment Videos

Area of Science:

  • Gerontology
  • Endocrinology
  • Internal Medicine

Background:

  • Thyroid dysfunction is prevalent in the elderly, with subclinical forms affecting over 10% of individuals over 80.
  • Diagnosing thyroid issues in those over 60 is challenging due to nonspecific clinical signs and age-related physiological changes affecting test results.
  • Nonthyroidal illnesses and medications frequently confound thyroid function assessments in older populations.

Purpose of the Study:

  • To review the current evidence on the prevalence, diagnosis, management, and long-term consequences of thyroid dysfunction in the elderly.
  • To highlight the diagnostic challenges posed by aging and confounding factors in elderly thyroid assessment.
  • To discuss the clinical significance and treatment debates surrounding subclinical thyroid dysfunction in older adults.

Main Methods:

  • Review of large epidemiological studies and randomized controlled intervention trials.
  • Analysis of current guidelines for treating thyroid dysfunction based on TSH levels, age, and comorbidities.
  • Synthesis of evidence regarding the impact of thyroid dysfunction on cardiovascular, skeletal, and neurological systems in the elderly.

Main Results:

  • Thyroid dysfunction diagnosis in the elderly is complicated by nonspecific symptoms and physiological aging changes.
  • Overt thyroid dysfunction significantly impacts the heart, skeleton, and nervous system, necessitating early intervention.
  • The clinical significance and treatment necessity for mild and subclinical thyroid dysfunction in the elderly remain subjects of ongoing debate and research.

Conclusions:

  • Effective management of thyroid dysfunction in the elderly requires careful consideration of diagnostic complexities and potential impacts on multiple organ systems.
  • While overt thyroid dysfunction demands prompt treatment, the management of subclinical forms requires a nuanced approach based on individual risk factors and emerging evidence.
  • Further research is needed to clarify the long-term consequences and optimal treatment strategies for subclinical thyroid dysfunction in the aging population.