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Drug-attributed anaphylaxis.

D Y Wang1, C Forslund, U Persson

  • 1Shanghai Medical University, Hua Shan Hospital, China.

Pharmacoepidemiology and Drug Safety
|April 10, 2004
PubMed
Summary
This summary is machine-generated.

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Drug-induced anaphylaxis is a serious concern, with 3.8% of reported cases being fatal. Preventive measures like dextran 1 and non-ionic contrast media have significantly reduced risks, highlighting the importance of ongoing surveillance.

Area of Science:

  • Pharmacovigilance
  • Clinical Toxicology
  • Immunology

Background:

  • Allergic type I reactions to medications present a spectrum from mild symptoms to life-threatening anaphylaxis.
  • Drug-induced anaphylaxis poses a significant public health challenge, necessitating robust monitoring systems.

Purpose of the Study:

  • To analyze patient characteristics and suspected drugs involved in anaphylactic reactions and shock reported in Sweden between 1972 and 1995.
  • To evaluate the impact of specific interventions on the incidence of drug-induced anaphylaxis.

Main Methods:

  • Retrospective analysis of 1338 case reports of suspected drug-induced anaphylaxis/shock from Sweden (1972-1995).
  • Comparison of reporting rates for different drugs (dextrans, X-ray contrast media, antibiotics) before and after specific interventions.

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  • Inclusion of drug sales and prescription data for comparative analysis.

    • Main Results:

    • An overall reporting rate of seven cases per million inhabitants per year for drug-induced anaphylaxis was observed.
    • Dextran use showed a significant decrease in anaphylactic reactions, shock, and fatalities after the introduction of preventive treatment with dextran 1 in 1983.
    • Non-ionic contrast media were associated with lower reaction rates and no fatal cases compared to ionic contrast media.
    • Benzylpenicillin had a higher reported rate of anaphylaxis than phenoxymethylpenicillin.

    Conclusions:

    • Spontaneous reporting systems are crucial for identifying drug-induced anaphylaxis risks.
    • Interventions such as preventive treatments and shifts to safer drug formulations (e.g., non-ionic contrast media) can effectively mitigate anaphylaxis risks.
    • Continued surveillance and the development of quantitative methods are essential for improving drug safety.