Related Experiment Video
Updated: Apr 30, 2026
05:39
Spontaneous Murine Model of Anaplastic Thyroid Cancer
Published on: February 3, 2023
2.1K
Hypothyroidism: causes, killers, and life-saving treatments
Sarah B Dubbs1, Ryan Spangler2
1Department of Emergency Medicine, University of Maryland School of Medicine, 110 South Paca Street, 6th Floor Suite 200, Baltimore, MD 21201, USA.
Emergency Medicine Clinics of North America
|April 29, 2014
Summary
Hypothyroidism is a common endocrine disorder often missed due to nonspecific symptoms. Prompt diagnosis and treatment with thyroid hormone replacement are crucial for managing this condition and preventing life-threatening complications like myxedema coma.
Area of Science:
- Endocrinology
- Internal Medicine
Background:
- Hypothyroidism is a prevalent endocrine disorder.
- Its signs and symptoms are frequently nonspecific and overlooked.
- Myxedema coma represents a severe, life-threatening manifestation.
Purpose of the Study:
- To highlight the commonality and underrecognized nature of hypothyroidism.
- To emphasize the diagnostic approach and treatment of hypothyroidism.
- To underscore the critical importance of recognizing and treating myxedema coma.
Main Methods:
- Review of clinical presentation and diagnostic criteria for hypothyroidism.
- Discussion of therapeutic strategies, including hormone replacement therapy.
- Emphasis on the recognition and management of myxedema coma.
Main Results:
- Hypothyroidism presents with diverse and often subtle clinical features.
- Blood tests measuring circulating thyroid hormones are key for diagnosis.
- Exogenous thyroid hormone, typically levothyroxine, is the standard treatment.
Conclusions:
- Early identification and management of hypothyroidism are essential.
- Prompt treatment with thyroid hormone replacement is vital for all forms, including myxedema coma.
- Effective treatment significantly reduces mortality associated with severe hypothyroidism.
Related Concept Videos
01:25Hyperthyroidism I: Introduction
30
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...
30
01:27Hyperthyroidism II: Pathophysiology
28
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...
28
01:23Hypothyroidism II: Pathophysiology
26
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...
26
01:28Graves' Disease I: Introduction
23
Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence...
23
01:24Graves Disease II: Pathophysiology
26
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,...
26
01:20Synthesis and Regulation of Thyroid Hormones
7.1K
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...
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...
7.1K