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Related Experiment Videos

Rush desensitization in heparin hypersensitivity: a case report

G Patriarca1, M Rossi, D Schiavino

  • 1Department of Allergology, Catholic University of Rome, Italy.

Allergy
|April 1, 1994
PubMed
Summary
This summary is machine-generated.

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Heparin hypersensitivity, though rare, can be managed. This case study demonstrates successful heparin desensitization in a patient with pseudoallergic intolerance, enabling critical heart surgery.

Area of Science:

  • Cardiology
  • Allergology
  • Pharmacology

Background:

  • Adverse reactions to heparin are uncommon but can complicate treatment.
  • Heparin hypersensitivity, particularly pseudoallergic intolerance, presents unique clinical challenges.
  • Management strategies for heparin intolerance, especially prior to cardiac surgery, are not well-established.

Observation:

  • A 55-year-old female patient with severe valvular heart disease experienced urticaria upon exposure to both subcutaneous calcium heparin and intravenous sodium heparin.
  • Standard allergy testing (skin and patch tests) yielded negative results, suggesting a pseudoallergic reaction.
  • Mitral valve replacement necessitated the use of heparin, posing a significant treatment dilemma.

Findings:

  • A rapid heparin desensitization protocol, combined with antihistamines, was successfully implemented.

Related Experiment Videos

  • The desensitization involved a gradual increase in heparin dosage, starting with 50 IU subcutaneously and progressing to 5000 IU intravenously over four days.
  • The patient tolerated the full heparin dosage required for extracorporeal circulation during heart surgery without adverse effects.

    • Implications:

    • This case highlights the feasibility and safety of rapid heparin desensitization in patients with pseudoallergic heparin intolerance.
    • Successful desensitization enabled the performance of essential cardiac surgery, demonstrating a viable management pathway.
    • The findings suggest that desensitization protocols can be a crucial tool for managing anticoagulation in patients with heparin hypersensitivity, improving surgical outcomes.