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Immediate-type hypersensitivity reactions after platelet transfusion

D Wilhelm1, A Fiebelkorn, S Görg

  • 1Institute of Immunology and Transfusion Medicine, University of Lübeck, Germany.

Beitrage Zur Infusionstherapie Und Transfusionsmedizin = Contributions to Infusion Therapy and Transfusion Medicine
|January 1, 1994
PubMed
Summary

Immediate-type hypersensitivity reactions after platelet transfusions are linked to specific IgE antibodies. Allergy testing is recommended for patients needing multiple platelet substitutions, especially atopic individuals.

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Area of Science:

  • Immunology
  • Transfusion Medicine
  • Allergy

Background:

  • Non-febrile non-haemolytic transfusion reactions (NHTR) encompass a range of hypersensitivity responses.
  • The pathophysiology of immediate-type NHTR remains poorly understood.
  • Symptoms vary from mild urticaria to severe anaphylactic shock.

Purpose of the Study:

  • To investigate the underlying mechanisms of immediate-type NHTR.
  • To assess the role of IgE antibodies and complement activity in NHTR.
  • To identify risk factors for developing NHTR.

Main Methods:

  • Analysis of patient sera for total IgE and specific IgE antibodies.
  • Assessment of complement activity in patient sera.
  • Correlation of findings with clinical presentation of NHTR.

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Main Results:

  • Specific IgE antibodies in recipient sera were significantly associated with immediate-type NHTR.
  • Atopic patients demonstrated a higher risk of experiencing these transfusion reactions.
  • No specific association was found with complement activity.

Conclusions:

  • Specific IgE antibodies are key mediators in immediate-type NHTR.
  • Atopy is a significant risk factor for NHTR.
  • Consider allergy diagnostics for patients requiring multiple platelet transfusions.