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Related Concept Videos

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...
Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...
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Hyperthyroidism I: Introduction

Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
Drug Dosing: Geriatric Patients01:15

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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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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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Functions of Thyroid Hormones

The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
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Related Experiment Video

Updated: May 8, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Subclinical thyroid dysfunction and functional capacity among elderly.

Vanessa S Virgini1, Liselotte W Wijsman, Nicolas Rodondi

  • 11 Department of General Internal Medicine, Inselspital, University Hospital of Bern , Bern, Switzerland .

Thyroid : Official Journal of the American Thyroid Association
|August 15, 2013
PubMed
Summary
This summary is machine-generated.

Subclinical thyroid dysfunction did not impact functional capacity in well-functioning elderly individuals. This study found no association between thyroid status and performance on daily living activities over time.

Related Experiment Videos

Last Updated: May 8, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
12:59

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People

Published on: July 5, 2017

Area of Science:

  • Gerontology
  • Endocrinology
  • Public Health

Background:

  • Subclinical thyroid dysfunction is prevalent in older adults.
  • Previous research on its impact on functional capacity has yielded conflicting results.
  • This study investigates the association in an elderly cohort.

Purpose of the Study:

  • To assess the relationship between subclinical thyroid dysfunction and functional capacity in the elderly.
  • To determine if subclinical thyroid dysfunction predicts decline in functional capacity over time.

Main Methods:

  • Analysis of 5182 participants (mean age 75.2 years) from the PROSPER study.
  • Functional capacity assessed using Barthel Index (BI) and Instrumental Activities of Daily Living (IADL) scores.
  • Comparison of euthyroid, subclinical hyperthyroid, and subclinical hypothyroid groups, including analysis of persistent dysfunction.

Main Results:

  • No significant differences in baseline functional capacity (BI, IADL) were observed between euthyroid and subclinical thyroid dysfunction groups.
  • No association was found between thyroid function and the annual decline in BI or IADL scores over a 3.2-year follow-up.
  • Persistent subclinical thyroid dysfunction also showed no association with functional capacity.

Conclusions:

  • Subclinical thyroid dysfunction does not appear to decrease functional capacity in well-functioning, community-dwelling elderly individuals.
  • The findings suggest that thyroid status may not be a significant factor in maintaining daily living activities in this population.