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Related Concept Videos

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

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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.
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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.
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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.
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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

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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...
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Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
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Related Experiment Video

Updated: Mar 18, 2026

Routine Screening Method for Microparticles in Platelet Transfusions
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Routine Screening Method for Microparticles in Platelet Transfusions

Published on: January 31, 2018

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[Prophylactic platelet transfusions].

Minna Ilmakunnas, Kari Remes, Seppo Hiippala

    Duodecim; Laaketieteellinen Aikakauskirja
    |July 13, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Platelet transfusions in Finland are high, but often unnecessary for minor procedures. In cardiac surgery, prophylactic platelet transfusions may be ineffective due to platelet inhibitors, suggesting alternative strategies.

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    Preparation and Pathogen Inactivation of Double Dose Buffy Coat Platelet Products using the INTERCEPT Blood System

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    Area of Science:

    • Hematology
    • Transfusion Medicine

    Context:

    • High consumption of platelet products in Finland.
    • Current practice involves pre-operative transfusions for thrombocytopenic patients to prevent hemorrhage.
    • Platelet use in cardiac surgery is linked to hemorrhagic diathesis from platelet inhibitors.

    Purpose:

    • To critically evaluate the prophylactic use of platelet transfusions.
    • To discuss the ineffectiveness of prophylactic transfusions in patients on platelet inhibitors.
    • To outline current international clinical practice guidelines for platelet use.

    Summary:

    • Prophylactic platelet transfusions are common in Finland, particularly pre-operatively for thrombocytopenic patients.
    • However, many minor procedures may not require such transfusions.
    • In cardiac surgery, platelet inhibitors can render transfused platelets ineffective, suggesting a need to defer transfusions until inhibitor effects subside.

    Impact:

    • Potential to reduce unnecessary platelet consumption and associated costs.
    • Improved patient outcomes by optimizing transfusion strategies in specific surgical contexts.
    • Guidance for clinicians on evidence-based platelet transfusion practices, especially in cardiac surgery.