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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

1.7K
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

2.5K
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...
2.5K
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

167
The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
167
Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

151
Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
151
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

1.3K
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...
1.3K
Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

230
Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
230

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Related Experiment Video

Updated: Dec 5, 2025

Routine Screening Method for Microparticles in Platelet Transfusions
09:49

Routine Screening Method for Microparticles in Platelet Transfusions

Published on: January 31, 2018

16.4K

[Thrombocytopenia as an incidental finding].

Andreas Holbro1, Jakob R Passweg1

  • 1Klinik für Hämatologie, Universitätsspital Basel.

Therapeutische Umschau. Revue Therapeutique
|October 15, 2020
PubMed
Summary

Thrombocytopenia, a low platelet count, requires careful evaluation to rule out pseudothrombocytopenia. A blood smear is crucial for diagnosis and guiding treatment in patients with bleeding risks.

Area of Science:

  • Hematology
  • Clinical Pathology

Background:

  • Platelets are vital for hemostasis, with normally stable peripheral blood counts.
  • Thrombocytopenia is a common clinical finding requiring systematic investigation.
  • Pseudothrombocytopenia due to pre-analytical factors (e.g., EDTA anticoagulant) must be excluded first.

Purpose of the Study:

  • To outline the diagnostic approach for thrombocytopenia as an incidental finding.
  • To emphasize the importance of differentiating true thrombocytopenia from pseudothrombocytopenia.
  • To guide the stepwise work-up and management of thrombocytopenic patients.

Main Methods:

  • Exclusion of pseudothrombocytopenia by using alternative anticoagulants (citrate) or specific collection tubes.
  • Peripheral blood smear examination to identify platelet clumping and aid differential diagnosis.

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Flow Cytometry Analysis of Tissue Factor Expression in Human Platelets
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  • Stepwise diagnostic work-up in collaboration with a hematologist.

    • Main Results:

    • Pseudothrombocytopenia can be identified through specific collection methods or blood smear morphology.
    • Blood smear analysis is fundamental for broad differential diagnosis of thrombocytopenia.
    • Early therapeutic interventions are critical for bleeding patients.

    Conclusions:

    • Accurate diagnosis of thrombocytopenia is essential for targeted therapy.
    • Management strategies must consider patient status, including bleeding risk, surgical plans, and anticoagulant/antiplatelet therapy.
    • A systematic, collaborative approach ensures optimal patient care for thrombocytopenia.