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RadiologyManagement

Contrast Allergy Management (ACR 2021)

Contrast Allergy Management (ACR 2021): Prior Contrast Reaction History → Prior Reaction Severity → Mild Prior Reaction → Consider Premedication.

Pathway Overview

11 steps

Algorithm Steps

11 total

  1. 01Start

    Prior Contrast Reaction History

  2. 02Decision

    Prior Reaction Severity

    • Mild
    • Moderate
    • Severe
  3. 03Action

    Mild Prior Reaction

    Urticaria, itching, nausea

  4. 04End

    Consider Premedication

    Different contrast class if possible

  5. 05Action

    Moderate Reaction

    Bronchospasm, facial edema

  6. 06Action

    Premedication Protocol

    Prednisone 50mg at 13h, 7h, 1h + DPH

  7. 07End

    Use Different Contrast Agent

  8. 08Action

    Severe Prior Reaction

    Anaphylaxis, cardiovascular collapse

  9. 09Decision

    Alternative Imaging?

  10. 10End

    Non-Contrast Study

  11. 11End

    Full Precautions

    Premed + different agent + monitoring

Guideline Source

ACR Manual on Contrast Media 2021

DOI: 10.1016/j.jacr.2020.01.030View Guideline

Clinical Safety Information

Clinical Decision Support — Not a Substitute for Clinical Judgment

Individual patient factors may require deviation from these recommendations.

Known Limitations

  • Premedication does not guarantee prevention
  • Breakthrough reactions still occur
  • Skin testing not widely validated

Applicable Regions

USAUUKEU

EU: ESUR guidelines; allergist consultation

US: ACR Manual standard

Version 1Next review: 2028-01-01

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Management

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Frequently Asked Questions

What is the Contrast Allergy Management (ACR 2021)?

The Contrast Allergy Management (ACR 2021) is a management clinical algorithm for Radiology. It provides a structured decision tree to guide clinical decision-making, based on ACR Manual on Contrast Media 2021.

What guideline is the Contrast Allergy Management (ACR 2021) based on?

This algorithm is based on ACR Manual on Contrast Media 2021 (DOI: 10.1016/j.jacr.2020.01.030).

What are the limitations of the Contrast Allergy Management (ACR 2021)?

Known limitations include: Premedication does not guarantee prevention; Breakthrough reactions still occur; Skin testing not widely validated. Individual patient factors may require deviation from these recommendations.

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