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Related Experiment Videos

Protamine sulphate hypersensitivity

L Doolan, I McKenzie, J Krafchek

    Anaesthesia and Intensive Care
    |May 1, 1981
    PubMed
    Summary
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    Protamine hypersensitivity can cause severe reactions like cardiovascular collapse. Intra-dermal skin testing helps identify protamine allergy, with hexadimethrine as a safe alternative for heparin neutralization in allergic patients.

    Area of Science:

    • Anesthesiology
    • Immunology
    • Cardiology

    Background:

    • Protamine sulfate is used to neutralize heparin during cardiac and vascular surgery.
    • Previous exposure to protamine sulfate can sensitize patients, leading to hypersensitivity reactions.

    Observation:

    • Three patients experienced sudden cardiovascular collapse and bronchospasm after intravenous protamine sulfate administration.
    • Allergic reactions were rapidly resolved with intravenous adrenaline and plasma volume expansion.

    Findings:

    • Intra-dermal skin testing confirmed protamine hypersensitivity in the affected patients.
    • Patients with confirmed protamine allergy can be safely managed with careful heparin monitoring and hexadimethrine (Polybrene) for neutralization.

    Implications:

    Related Experiment Videos

    • Intra-dermal skin testing for anesthetic agents is recommended to identify specific allergens.
    • Hexadimethrine provides a safe alternative to protamine sulfate for heparin neutralization in allergic patients undergoing surgery.
    • Early recognition and management of protamine hypersensitivity are crucial for patient safety.