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Related Concept Videos

Coagulation01:06

Coagulation

1.1K
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Coagulation01:09

Coagulation

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The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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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Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

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Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
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Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
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Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
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[Dealing with COVID-19-associated coagulopathy].

Frederikus A Klok1,2, Paul L den Exter1, Menno V Huisman1

  • 1Leids Universitair Medisch Centrum, afd. Trombose en Hemostase, Leiden.

Nederlands Tijdschrift Voor Geneeskunde
|May 13, 2020
PubMed
Summary

Activation of the coagulation cascade, known as COVID-19-associated coagulopathy, is common in patients with COVID-19 and predicts poor outcomes. This review provides essential guidance for managing coagulopathy in Dutch clinical practice.

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Area of Science:

  • Internal Medicine
  • Hematology
  • Infectious Diseases

Background:

  • COVID-19 frequently causes activation of the coagulation cascade, termed COVID-19-associated coagulopathy.
  • This coagulopathy is linked to increased mortality and adverse patient outcomes.
  • Current management guidelines are based on limited, often retrospective, data, leading to inconsistencies.

Purpose of the Study:

  • To review early research on COVID-19-associated coagulopathy.
  • To provide practical recommendations for the diagnosis and management of coagulopathy in COVID-19 patients.
  • To outline strategies for preventing complications related to coagulopathy in clinical settings.

Main Methods:

  • Review of published studies on COVID-19-associated coagulopathy.
  • Synthesis of findings to establish clinical best practices.
  • Focus on diagnostics, daily management, and complication prevention.

Main Results:

  • COVID-19-associated coagulopathy is a significant predictor of patient prognosis.
  • Evidence-based recommendations for managing coagulopathy are crucial.
  • Proactive prevention of complications is essential for patient care.

Conclusions:

  • Effective management of COVID-19-associated coagulopathy requires clear diagnostic and therapeutic strategies.
  • This review offers practical guidance for Dutch clinicians.
  • Standardizing care can improve outcomes for patients with COVID-19 and coagulopathy.