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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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Introduction to Hemostasis01:05

Introduction to Hemostasis

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Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
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Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

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Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...
43
Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

10.0K
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
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...
10.0K
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

1.0K
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...
1.0K
Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

Cardiovascular System Abnormal Findings I: Inspection and Palpation

559
In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection
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Related Experiment Video

Updated: Oct 14, 2025

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
09:38

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

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[How I explore… hémostatic abnormalities in pediatrics].

J Longton1, J M Minon2, P Péters3

  • 1Service d'Hémato-Oncologie pédiatrique, HémoWaB, CHU Liège, Belgique.

Revue Medicale De Liege
|November 5, 2021
PubMed
Summary
This summary is machine-generated.

Interpreting pediatric hemostasis work-ups can be complex due to test sensitivity and pre-analytical factors. Basic hemostasis knowledge aids in distinguishing primary hemostasis issues from coagulopathies for accurate diagnosis.

Keywords:
CoagulationHemostasis laboratoryPediatricsPrimary hemostasis

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Related Experiment Videos

Last Updated: Oct 14, 2025

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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Area of Science:

  • Pediatric Hematology
  • Clinical Pathology
  • Hemostasis and Thrombosis

Background:

  • Hemostasis work-up is a common but complex pediatric test.
  • Pre-analytical variables like inflammation, anemia, and sample handling time can significantly affect test results.
  • Accurate interpretation is crucial for avoiding misdiagnosis in pediatric patients.

Framework:

  • Distinguishing primary hemostasis disorders from coagulopathies is a key initial step.
  • Understanding basic hemostasis principles is essential for correct interpretation.
  • Abnormal results necessitate further targeted testing.

Implementation:

  • Ensure proper pre-analytical conditions for blood sampling and analysis.
  • Utilize foundational hemostasis knowledge for initial result assessment.
  • Collaborate with specialized hemostasis laboratories for confirmatory testing.

Implications:

  • Accurate interpretation of hemostasis tests prevents misdiagnosis and ensures appropriate patient management.
  • Standardized pre-analytical procedures improve the reliability of diagnostic testing.
  • Specialized laboratory analysis refines the diagnosis of hemorrhagic disorders in children.