Related Experiment Videos
Anaphylaxis to anaesthetic drugs
1Intensive Therapy Unit, Royal North Shore Hospital, St Leonards, NSW 2065, Australia.
Novartis Foundation Symposium
|March 18, 2004
Summary
Anaphylaxis during anesthesia, often IgE-mediated, can be diagnosed using skin testing. Neuromuscular blocking drugs are common culprits, with allergies persisting for decades.
Area of Science:
- Anesthesiology
- Immunology
- Allergy
Background:
- Anaphylactic reactions during anesthesia saw a significant rise in the mid-1970s.
- Previous studies indicated the involvement of Immunoglobulin E (IgE) in these severe reactions.
Purpose of the Study:
- To demonstrate the diagnostic value and safety of skin testing for identifying anesthetic drug allergens.
- To elucidate the mechanisms of anaphylaxis induced by neuromuscular blocking drugs.
- To assess the long-term persistence of anesthetic allergy.
Main Methods:
- Intradermal and prick skin testing were employed for diagnosis.
- Radioimmunoassay techniques were used to study drug-IgE interactions.
- Mast cell tryptase levels were measured to assess anaphylaxis.
Main Results:
- Skin testing proved valuable and safe for diagnosing anesthetic drug allergy.
- Neuromuscular blocking drugs induce anaphylaxis by cross-linking IgE via substituted ammonium groups, leading to cross-reactivity.
- Mast cell tryptase is a sensitive marker for anaphylaxis.
- Anesthetic allergy can persist for up to 27 years.
Conclusions:
- Anesthetic allergy, particularly IgE-mediated anaphylaxis, requires accurate diagnosis via skin testing.
- Understanding drug-specific IgE binding mechanisms aids in predicting cross-reactivity.
- Subsequent anesthesia is generally safe when guided by skin test results.