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Related Concept Videos

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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Structure and Function of Platelets01:18

Structure and Function of Platelets

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The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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...
2.6K
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

1.6K
Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
1.6K
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

2.7K
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...
2.7K
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

6.3K
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
6.3K

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Updated: May 5, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
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Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation

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Inherited disorders of platelet function.

Dana C Matthews1

  • 1Division of Hematology/Oncology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA; Cancer and Blood Disorders Center, Seattle Children's Hospital MS MB.8.501, 4800 Sand Point Way Northeast, Seattle, WA 98105, USA.

Pediatric Clinics of North America
|November 19, 2013
PubMed
Summary
This summary is machine-generated.

Inherited platelet function disorders cause bleeding issues in children, especially girls with heavy periods. Diagnosis can be challenging, but treatments are available.

Keywords:
BruisingEpistaxisMenorrhagiaPlatelet aggregationPlatelets

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Area of Science:

  • Hematology
  • Pediatric bleeding disorders

Background:

  • Inherited platelet function disorders (IPFDs) present with variable severity and unknown frequency.
  • IPFDs are an increasingly recognized cause of pediatric bleeding.
  • They may be more common than von Willebrand disease in adolescent girls with menorrhagia.

Purpose of the Study:

  • To review the clinical presentation of IPFDs.
  • To summarize common types of IPFDs.
  • To discuss diagnostic challenges and treatment options for IPFDs.

Main Methods:

  • Literature review of inherited platelet function disorders.
  • Summary of diagnostic testing modalities.
  • Overview of current treatment and supportive care strategies.

Main Results:

  • IPFDs are a significant cause of bleeding in pediatric patients.
  • Adolescent girls with menorrhagia are a key demographic.
  • Diagnostic difficulties are common, necessitating specialized testing.
  • Various treatment and supportive care options exist.

Conclusions:

  • IPFDs are an important diagnostic consideration in pediatric bleeding.
  • Early recognition and appropriate management are crucial.
  • Further research into frequency and diagnostic accuracy is warranted.