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Reactions to radiocontrast media
Sandra J Hong1, Johnson T Wong, Kurt J Bloch
1Department of Medicine, Harvard Medical School, Clinical Immunology and Allergy Units, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Boston, Massachusetts, USA.
Allergy and Asthma Proceedings
|December 13, 2002
Summary
Adverse reactions to radiocontrast media (RCM) can be severe. This review details anaphylactoid reactions (AR), their causes, and management strategies for patients with prior RCM reactions.
Area of Science:
- Radiology
- Clinical Immunology
Background:
- Radiocontrast media (RCM) are essential for many diagnostic imaging procedures.
- Adverse reactions to RCM can range from mild to life-threatening.
Observation:
- This article focuses on anaphylactoid reactions (AR), a type of non-IgE mediated hypersensitivity.
- A case of AR to RCM is presented to illustrate the clinical syndrome.
Findings:
- AR to RCM shares clinical similarities with anaphylaxis but is mechanistically distinct.
- Risk factors and current understanding of RCM-induced AR pathogenesis are reviewed.
Implications:
- Effective management strategies are crucial for patients with previous adverse RCM reactions.
- Guidance is provided for managing breakthrough reactions despite premedication.