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Related Experiment Videos

Blood surface interactions in extravascular salvageable blood pools

S R Rakower

    Surgery, Gynecology & Obstetrics
    |October 1, 1977
    PubMed
    Summary

    Anticoagulation prevents clotting in extravascular blood. Heparin is more effective than citrate phosphate dextrose for preventing coagulation when there is a delay before blood collection, especially in thoracic or peritoneal cavities.

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    Area of Science:

    • Biomedical Science
    • Hematology
    • Surgical Research

    Background:

    • Extravascular blood pools are prone to clotting and defibrination.
    • Autotransfusion of extravascular blood carries risks if not properly managed.
    • Understanding blood preservation in extravascular spaces is crucial for surgical outcomes.

    Purpose of the Study:

    • To compare the efficacy of different anticoagulants in preventing coagulation in extravascular blood.
    • To evaluate the impact of anticoagulation on blood preservation in thoracic and peritoneal cavities.
    • To assess the risks associated with non-anticoagulated extravascular blood in autotransfusion.

    Main Methods:

    • Investigated the effects of systemic and local heparin versus local citrate phosphate dextrose on extravascular blood.
    • Monitored coagulation and defibrination timelines in blood collected from thoracic and peritoneal cavities.
    • Assessed blood preservation quality under different anticoagulation protocols.

    Main Results:

    • Anticoagulation effectively prevents clotting and defibrination in extravascular blood pools.
    • Heparin demonstrated superior efficacy over citrate phosphate dextrose in preventing coagulation when a lag period exceeded 60 minutes.
    • Non-anticoagulated blood in thoracic or peritoneal cavities underwent complete defibrination within 20 minutes.
    • Thoracic blood exhibited better preservation compared to peritoneal blood following heparinization.

    Conclusions:

    • Anticoagulation is essential for managing extravascular blood intended for autotransfusion.
    • Heparin offers a more robust solution for preventing coagulation in delayed collection scenarios.
    • Prompt anticoagulation and understanding anatomical site differences are key to optimizing extravascular blood utilization.

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