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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.
Structure and Function of Platelets01:18

Structure and Function of Platelets

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 platelets, with...
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

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...
Formation of the Platelet Plug01:22

Formation of the Platelet Plug

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

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

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...
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...

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Related Experiment Video

Updated: Jul 11, 2026

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
04:37

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

Published on: May 23, 2025

Inherited platelet disorders.

Massimo Franchini1, Giuseppe Lippi, Dino Veneri

  • 1Servizio di Immunoematologia e Trasfusione-Centro Emofilia, Azienda Ospedaliera di Verona, Italy. mfranchini@univr.it

Clinica Chimica Acta; International Journal of Clinical Chemistry
|September 22, 2007
PubMed
Summary
This summary is machine-generated.

Inherited platelet disorders, though rare, cause significant bleeding. This review covers their genetic causes, diagnosis, and management.

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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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Last Updated: Jul 11, 2026

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Area of Science:

  • Hematology
  • Genetics
  • Internal Medicine

Background:

  • Inherited platelet disorders are uncommon but likely underdiagnosed causes of bleeding symptoms.
  • These disorders involve abnormalities in platelet count (thrombocytopenias) or function, or both.
  • Understanding these conditions is crucial for accurate diagnosis and effective patient care.

Purpose of the Study:

  • To provide a concise overview of inherited platelet disorders.
  • To discuss the molecular basis, diagnostic approaches, and treatment strategies for these conditions.
  • To enhance awareness and knowledge among healthcare professionals regarding rare bleeding disorders.

Main Methods:

  • This is a review article, synthesizing existing knowledge.
  • Information was gathered from relevant scientific literature.
  • The focus is on summarizing key aspects of inherited platelet disorders.

Main Results:

  • Inherited platelet disorders manifest as quantitative or qualitative platelet defects.
  • Molecular defects underlie the diverse clinical presentations.
  • Diagnostic evaluation involves a combination of clinical assessment and laboratory testing.

Conclusions:

  • Inherited platelet disorders require a systematic approach for diagnosis and management.
  • Early identification and appropriate treatment can significantly improve patient outcomes.
  • Further research is needed to fully elucidate the genetic landscape and therapeutic options.