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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...
Errors occurring during blood pressure monitoring01:25

Errors occurring during blood pressure monitoring

Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor, and heat...
Hyperthyroidism I: Introduction01:25

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...

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Related Experiment Video

Updated: Jun 17, 2026

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

Potential for medical error: incorrectly completed request forms for thyroid function tests limit pathologists'

Annalise E Zemlin1, Louise Nutt, Lesley J Burgess

  • 1Division of Chemical Pathology, National Health Laboratory Service, Tygerberg Hospital, Stellenbosch University, Tygerberg, W Cape. azemlin@sun.ac.za

South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde
|January 16, 2010
PubMed
Summary

Incomplete laboratory forms for thyroid function tests (TFT) are common, with missing patient medication and doctor contact details. This impacts test accuracy and clinical decision-making.

Related Experiment Videos

Last Updated: Jun 17, 2026

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery
04:42

A Personalized 3D-Printed Model for Preoperative Evaluation in Thyroid Surgery

Published on: February 17, 2023

Area of Science:

  • Clinical Biochemistry
  • Laboratory Medicine
  • Medical Diagnostics

Background:

  • Laboratory errors significantly impact pre- and post-analytical phases.
  • Thyroid function tests (TFTs), including TSH, T4, and T3, are crucial for diagnosing thyroid disorders.
  • Interpretative comments are standard for all TFT results.

Purpose of the Study:

  • To audit laboratory request forms for TFTs to identify pre-analytical errors.
  • To assess the frequency of incomplete data on request forms.
  • To evaluate the impact of these errors on interpretative comments and subsequent testing.

Main Methods:

  • Analysis of 482 laboratory request forms for TFTs from primary health care clinics.
  • Assessment of specific parameters on each form for completeness.

Main Results:

  • Medication details (74.5%) and doctor's contact number (65.1%) were the most frequent incomplete parameters.
  • Of 123 patients with medication data, 50.4% were on thyroxine.
  • Pre-analytical errors were identified in a significant number of forms.

Conclusions:

  • Incomplete laboratory forms contribute to pre-analytical errors, affecting the quality of post-analytical interpretation.
  • There is a need for further research into the impact of incomplete forms on laboratory errors and interpretative comments.
  • Improving the completeness of request forms is essential for accurate thyroid function testing and patient care.