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Related Concept Videos

Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

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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...
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Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

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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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Disorders of Hemostasis01:24

Disorders of Hemostasis

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Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

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Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
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Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases
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[Thrombotic microangiopathy].

Anja Gäckler1, Oliver Witzke2

  • 1Klinik für Nephrologie, Universitätsmedizin Essen, Universität Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Deutschland.

Der Nephrologe
|February 8, 2021
PubMed
Summary
This summary is machine-generated.

Thrombotic microangiopathy (TMA) involves dangerous blood clots and organ damage. Accurate diagnosis is crucial for effective treatment and improved patient outcomes with new therapies.

Keywords:
ADAMTS13Atypical hemolytic uremic syndromeComplementEndotheliumThrombotic thrombocytopenic purpura

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Area of Science:

  • Hematology
  • Internal Medicine
  • Pathology

Context:

  • Thrombotic microangiopathy (TMA) is a critical condition involving microvascular platelet clot formation due to endothelial injury.
  • This process leads to ischemia, severe organ dysfunction, and can be life-threatening.
  • The etiology of TMA is diverse, encompassing thrombotic thrombocytopenic purpura (TTP) with reduced ADAMTS13 activity, infection-associated hemolytic uremic syndrome (HUS), and complement-mediated atypical HUS (aHUS).

Purpose:

  • To highlight the heterogeneous nature of Thrombotic microangiopathy (TMA) and its diverse underlying causes.
  • To emphasize the critical importance of accurate differential diagnosis in managing TMA.
  • To underscore the impact of novel pharmacotherapies on improving TMA prognosis.

Summary:

  • TMA is characterized by endothelial injury leading to microvascular thrombosis, ischemia, and organ dysfunction.
  • Differential diagnosis is crucial due to varied etiologies including TTP, HUS, and aHUS.
  • Recent advancements in pharmacotherapy have substantially improved patient outcomes.

Impact:

  • Accurate classification of TMA subtypes is essential for guiding appropriate and effective treatment strategies.
  • The development of targeted therapies has transformed the prognosis for patients with TMA.
  • Improved understanding and management of TMA contribute to better patient survival and quality of life.