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Related Concept Videos

Pedigree Analysis01:35

Pedigree Analysis

Overview
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.
Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...

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Related Experiment Video

Updated: Jul 17, 2026

The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well
08:01

The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well

Published on: February 27, 2026

Diagnostic approach to inherited bleeding disorders.

Giuseppe Lippi1, Massimo Franchini, Gian Cesare Guidi

  • 1Sezione di Chimica e Microscopia Clinica, Dipartimento di Scienze Morfologico-Biomediche, Università degli Studi di Verona, Verona, Italy. ulippi@tin.it

Clinical Chemistry and Laboratory Medicine
|January 25, 2007
PubMed
Summary

Understanding hemostasis is key to managing bleeding disorders. Reliable laboratory testing, including novel global assays, is crucial for diagnosing and treating inherited bleeding conditions effectively.

Related Experiment Videos

Last Updated: Jul 17, 2026

The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well
08:01

The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well

Published on: February 27, 2026

Area of Science:

  • Hematology
  • Vascular Biology
  • Clinical Pathology

Background:

  • Hemostasis involves a balance of pro- and anti-thrombotic factors across primary hemostasis, coagulation, and fibrinolysis.
  • Imbalances in hemostasis lead to hemorrhagic or thrombotic disorders.
  • Inherited bleeding disorders result from defects in platelets or plasma proteins, causing lifelong bleeding conditions.

Purpose of the Study:

  • To emphasize the importance of rapid and reliable identification of inherited bleeding pathologies.
  • To highlight the need for appropriate antihemorrhagic therapies.
  • To underscore the essential role of laboratory testing in managing bleeding diatheses.

Main Methods:

  • Clinical evaluation including medical history and physical examination.
  • First- and second-line laboratory testing for screening, diagnosis, and monitoring.
  • Consideration of traditional coagulation assays and emerging global coagulation tests.

Main Results:

  • Clinical history and examination have limited diagnostic efficiency for bleeding disorders.
  • Traditional coagulation assays vary in sensitivity and responsiveness to different abnormalities.
  • Global coagulation tests like thrombin generation assay and clot waveform analysis offer additional diagnostic insights.

Conclusions:

  • Accurate diagnosis of inherited bleeding disorders requires a robust laboratory approach.
  • Laboratories should develop tailored guidelines for coagulation testing based on specific characteristics.
  • Emerging global coagulation tests can enhance clinical decision-making for patients with bleeding diatheses.