Myths and misconceptions concerning contrast media-induced anaphylaxis: a narrative review

Area of Science:

• Radiology
• Pharmacology
• Clinical Medicine

Background:

• Contrast-enhanced radiological examinations are vital diagnostic tools.
• Approved iodinated and gadolinium-based contrast media are generally safe.
• Adverse drug reactions to contrast media occur in a small patient percentage.

Purpose of the Study:

• To identify and debunk common myths and misconceptions regarding contrast medium-induced adverse drug reactions.
• To enhance patient safety by correcting misinformation.
• To differentiate between predictable (Type A) and unpredictable (Type B) reactions.

Main Methods:

• Review of existing literature and clinical guidelines on contrast media safety.
• Analysis of common misconceptions, including "allergy-like" reactions and premedication efficacy.
• Identification of potentially misleading information and informal advice.

Main Results:

• Misconceptions such as "iodine-allergy" and the inability of initial exposure to induce allergy are prevalent.
• The belief that anti-allergy premedication suppresses all reactions is inaccurate.
• Interleukin-2 is incorrectly identified as a risk factor in some contexts.

Conclusions:

• Debunking myths surrounding contrast media adverse reactions is essential for patient safety.
• Accurate understanding of reaction types (Type A vs. Type B) improves clinical management.
• Radiologists and healthcare providers must rely on evidence-based information to guide patient care.