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Related Concept Videos

Coagulation01:09

Coagulation

9.3K
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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Coagulation01:06

Coagulation

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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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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...
1.4K
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.
1.7K
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

1.8K
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...
1.8K
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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Updated: Dec 14, 2025

Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
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Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients

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COVID-19-associated coagulopathy.

Massimo Franchini1,2, Giuseppe Marano1, Mario Cruciani1,3

  • 1Italian National Blood Centre, Rome, Italy.

Diagnosis (Berlin, Germany)
|July 20, 2020
PubMed
Summary
This summary is machine-generated.

Coronavirus disease 2019 (COVID-19) causes a prothrombotic state due to links between inflammation and clotting. Monitoring coagulation in severe COVID-19 patients is crucial for managing thrombotic risk and guiding treatment.

Keywords:
COVID-19SARS-CoV-2anticoagulant therapyprophylaxisthromboembolismthrombosis

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Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
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Area of Science:

  • Hematology
  • Infectious Diseases
  • Pathophysiology

Background:

  • Coronavirus disease 2019 (COVID-19), caused by SARS-CoV-2, is a systemic illness associated with a prothrombotic state.
  • The precise molecular mechanisms linking inflammation and hemostasis in COVID-19 coagulopathy remain under investigation.

Purpose of the Study:

  • To review the current understanding of COVID-19-associated coagulopathy.
  • To summarize its pathogenesis, epidemiology, clinical and laboratory features, and management strategies.

Main Methods:

  • This is a review article.
  • It synthesizes existing research on COVID-19 and coagulation.

Main Results:

  • COVID-19 induces a hypercoagulable state, increasing thrombotic risk in patients.
  • Laboratory monitoring is essential for identifying at-risk individuals and optimizing thromboprophylaxis.

Conclusions:

  • Understanding COVID-19 coagulopathy is vital for clinical management.
  • Further research into the pathogenesis and effective treatment of this complication is warranted.