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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 receptors...

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Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...

Hyperthyroidism I: Introduction

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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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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 in...

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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...

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Thyrotoxicosis causing arterial and venous thrombosis.

Ankur Lodha¹, Mehandi Haran, Robert Frankel

¹Department of Internal Medicine, Maimonides Medical Center, Brooklyn, New York, USA. ankurlodha@gmail.com

The American Journal of the Medical Sciences

|October 15, 2009

Summary

Thyrotoxicosis, a thyroid dysfunction, can cause arterial and venous thrombosis. This case highlights the need to evaluate thyroid function in patients with unexplained hypercoagulability.

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Area of Science:

Endocrinology
Vascular Medicine
Hematology

Background:

Thyrotoxicosis is associated with an increased risk of thromboembolic events.
Previous reports have documented thrombosis in patients with hyperthyroidism, but not concurrently arterial and venous thrombosis.

Observation:

This report details a unique case of a patient experiencing both arterial and venous thrombosis.
The patient presented with thyrotoxicosis, a condition of excess thyroid hormone production.

Findings:

The co-occurrence of arterial and venous thrombosis in a single patient with thyrotoxicosis is a rare clinical presentation.
This case underscores the complex relationship between thyroid dysfunction and hypercoagulable states.

Implications:

Patients with unexplained hypercoagulability warrant thorough evaluation for underlying thyroid dysfunction.
Early diagnosis and management of thyrotoxicosis may be crucial in preventing severe thrombotic complications.