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Related Concept Videos

Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

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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...
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Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

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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
Hyperthyroidism I: Introduction01:25

Hyperthyroidism 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...
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The Parathyroid Glands00:59

The Parathyroid Glands

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The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
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Graves Disease II: Pathophysiology01:24

Graves 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
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

3.5K
The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
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Related Experiment Video

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Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Factors predicting post-thyroidectomy hypoparathyroidism recovery.

Saleh F Al-Dhahri1, Mohamed Mubasher, Khamis Mufarji

  • 1Department of Otolaryngology, Head and Neck Surgery, King Fahad Medical City, Riyadh, Saudi Arabia.

World Journal of Surgery
|April 15, 2014
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Summary

Post-thyroidectomy hypoparathyroidism outcomes can be predicted. Preoperative parathyroid hormone (PTH) levels, gender, and diabetes influence recovery speed, aiding patient management.

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Area of Science:

  • Endocrinology
  • Surgical Complications
  • Thyroid Surgery Outcomes

Background:

  • Hypoparathyroidism is a frequent complication post-thyroidectomy, leading to numerous outpatient visits.
  • Current understanding of hypoparathyroidism outcomes and follow-up strategies is limited.

Purpose of the Study:

  • To predict outcomes of post-thyroidectomy hypoparathyroidism.
  • To identify key factors influencing parathyroid hormone (PTH) recovery.

Main Methods:

  • A multicenter, prospective study involving 186 patients.
  • Parathyroid hormone (PTH) levels measured preoperatively, post-surgery, and at follow-up visits up to 6 months.
  • Cox proportional hazard and Weibull distribution models used for recovery prediction and factor analysis.

Main Results:

  • 28.5% of patients developed hypoparathyroidism, predominantly females (88.6%).
  • Recovery factors identified: preoperative PTH, perioperative PTH drop, diabetes mellitus, and gender.
  • 62.3% recovered within 1 month, 13.2% did not recover within 6 months.

Conclusions:

  • Provides data for early prediction of PTH recovery post-thyroidectomy.
  • Identified factors can improve hypoparathyroidism management, patient satisfaction, and cost-effectiveness.