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Antithrombotic drugs: part I

A S Gallus, J Hirsh

    Drugs
    |January 1, 1976
    PubMed
    Summary

    Anticoagulant drugs like heparin and oral anticoagulants prevent blood clots. Low-dose heparin is effective for preventing venous thromboembolism after abdominal surgery with minimal bleeding risk.

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    Area of Science:

    • Pharmacology
    • Hematology
    • Medical Science

    Background:

    • Antithrombotic agents are crucial for managing thrombotic disorders.
    • Understanding drug mechanisms and clinical value is key to effective treatment.

    Purpose of the Study:

    • To review the clinical value and mechanisms of antithrombotic agents.
    • To assess the effectiveness of anticoagulants in preventing and treating venous thromboembolic disease.

    Main Methods:

    • Review of clinical studies on anticoagulants (heparin and oral anticoagulants).
    • Analysis of drug mechanisms, including heparin's action via antithrombin III and oral anticoagulants' effect on hepatic synthesis.
    • Evaluation of prophylactic use of low-dose heparin in surgical patients.

    Main Results:

    • Heparin offers immediate anticoagulation, suitable for initiating treatment, while oral anticoagulants are for prolonged therapy.
    • Low-dose subcutaneous heparin significantly reduces venous thromboembolism after abdominal surgery with minimal bleeding.
    • Anticoagulant therapy is proven effective in preventing death and recurrent embolism in patients with pulmonary embolism.

    Conclusions:

    • Low-dose heparin represents a major advance in preventing venous thromboembolism in surgical patients undergoing abdominal procedures.
    • Continuous intravenous heparin infusion, monitored by coagulation tests, minimizes bleeding and further thromboembolism.
    • Further research is needed for heparin's efficacy in orthopedic surgery patients.

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