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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

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.
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

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...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

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...
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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...
Coagulation01:09

Coagulation

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...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...

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The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well
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Thromboelastography in children with coagulation factor deficiencies.

Meera Chitlur1, Indira Warrier, Madhvi Rajpurkar

  • 1Carman and Ann Adams Department of Pediatrics, Children's Hospital of Michigan, Detroit Medical Center, Wayne State University, 3901 Beaubien Blvd, Detroit, MI 48201, USA. mchitlur@med.wayne.edu

British Journal of Haematology
|May 22, 2008
PubMed
Summary

Thromboelastography (TEG) may predict bleeding patterns in children with hemophilia. Faster clot formation on TEG correlated with milder bleeding, aiding prophylaxis decisions.

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The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well
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Published on: September 9, 2012

Area of Science:

  • Pediatric Hematology
  • Hemostasis and Thrombosis
  • Diagnostic Tools

Background:

  • Hemophilia classification by factor activity doesn't always predict bleeding severity.
  • Predicting bleeding patterns is crucial for effective prophylactic therapy in hemophilia.
  • Hemophilic arthropathy is a serious complication preventable with prophylaxis.

Purpose of the Study:

  • To evaluate Thromboelastography (TEG) characteristics in children with hemophilia.
  • To correlate TEG findings with clinical bleeding patterns in hemophilia patients.
  • To assess TEG's potential as a tool for guiding hemophilia prophylaxis.

Main Methods:

  • Retrospective analysis of 47 children with moderate hemophilia (MH), severe hemophilia with inhibitors (SHI), and severe hemophilia without inhibitors (SH).
  • Assessment of clot formation characteristics using Thromboelastography (TEG).
  • Correlation of TEG parameters with documented clinical bleeding patterns.

Main Results:

  • TEG demonstrated faster and enhanced clot formation (higher maximum thrombin/fibrin generation) in patients with milder bleeding tendencies.
  • Prolonged clot formation time was observed, consistent with factor deficiency.
  • A distinct difference in clot formation dynamics was noted between mild and severe bleeding phenotypes.

Conclusions:

  • TEG may offer a valuable method to assess bleeding tendency in children with hemophilia.
  • TEG findings could potentially aid in determining the need for prophylactic treatment.
  • This diagnostic approach may improve personalized management strategies for hemophilia.