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Related Concept Videos

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: 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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Extrinsic and Intrinsic Pathways of Hemostasis01:20

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Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
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The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
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Coagulation01:09

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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.
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Coagulation01:06

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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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Skin Diseases and Disorders01:23

Skin Diseases and Disorders

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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Updated: Mar 22, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
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Coagulation disorders and their cutaneous presentations: Pathophysiology.

Yunyoung Chang1, Ganary Dabiri2, Elizabeth Damstetter1

  • 1Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts.

Journal of the American Academy of Dermatology
|April 18, 2016
PubMed
Summary
This summary is machine-generated.

Hypercoagulable states increase thrombosis risk. Dermatologists can identify these conditions through skin symptoms, improving patient outcomes by reducing related morbidity and mortality.

Keywords:
antiphospholipid syndromeantithrombincoagulation cascadecryoglobulinemiafactor V Leidenhypercoagulable statehyperhomocysteinemiaprotein Cprotein Sprothrombinsickle cell disease

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Area of Science:

  • Hematology
  • Dermatology
  • Pathophysiology

Background:

  • Hypercoagulable states are inherited or acquired conditions predisposing individuals to thrombosis.
  • Understanding these states involves analyzing the complex coagulation cascade.
  • Cutaneous manifestations can be early indicators of underlying hypercoagulable conditions.

Purpose of the Study:

  • To review the epidemiology and pathophysiology of hypercoagulable states.
  • To highlight the critical role of dermatologists in identifying and managing these conditions.
  • To provide a foundation for understanding clinical features, diagnostics, and treatment in the accompanying article.

Main Methods:

  • Literature review focusing on epidemiology and pathophysiology.
  • Analysis of the coagulation cascade in relation to thrombotic events.
  • Correlation of dermatological presentations with hypercoagulable states.

Main Results:

  • Hypercoagulable states represent a significant risk factor for both venous and arterial thromboses.
  • Early recognition of cutaneous symptoms by dermatologists can lead to timely diagnosis.
  • Understanding pathophysiology is key to comprehending the predisposition to clot formation.

Conclusions:

  • Dermatologists are pivotal in the early diagnosis and management of hypercoagulable states.
  • Identifying skin manifestations can significantly reduce patient morbidity and mortality.
  • This review provides essential epidemiological and pathophysiological context for hypercoagulable states.