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Disorders of Hemostasis01:24

Disorders of Hemostasis

2.7K
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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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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Disorders of Erythrocytes01:27

Disorders of Erythrocytes

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Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
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Related Experiment Video

Updated: Mar 18, 2026

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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Quality laboratory issues in bleeding disorders.

D M Adcock1, J Mammen2, S C Nair2

  • 1Colorado Coagulation, Laboratory Corporation of America® Holdings, Englewood, CO, USA.

Haemophilia : the Official Journal of the World Federation of Hemophilia
|July 14, 2016
PubMed
Summary
This summary is machine-generated.

Improving haemostasis laboratory testing quality is crucial for accurate diagnoses. This review highlights preanalytical error reduction and specific methods for factor VIII inhibitor testing, benefiting patients with bleeding disorders.

Keywords:
bleedingexternal quality assessment schemesfactor inhibitorslaboratorypreanalyticquality

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Area of Science:

  • Clinical Laboratory Science
  • Haemostasis and Thrombosis
  • Quality Management in Healthcare

Background:

  • Accurate laboratory testing is vital for diagnosing and managing bleeding disorders.
  • Preanalytical errors are a significant source of incorrect test results in haemostasis diagnostics.
  • Quality assessment schemes are essential for ensuring reliable laboratory performance.

Purpose of the Study:

  • To discuss key quality issues in haemostasis laboratory testing.
  • To detail the implementation and impact of an external quality assessment scheme.
  • To review strategies for improving the accuracy of factor VIII inhibitor testing.

Main Methods:

  • Discussion of common preanalytical errors and sample rejection criteria.
  • Description of analytical methods to identify and overcome interferences.
  • Review of quality issues in the determination of factor VIII inhibitors.

Main Results:

  • External quality assessment schemes can significantly improve result accuracy.
  • Preanalytical error mitigation is critical for reliable haemostasis testing.
  • Heat treatment of plasma is recommended for accurate factor VIII inhibitor detection.

Conclusions:

  • Implementing robust quality initiatives enhances laboratory testing for bleeding disorders.
  • Focusing on preanalytical phase improvements and specific analytical techniques is key.
  • Resource-restricted settings can adopt these strategies to improve diagnostic quality.