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Delayed reactions to urographic contrast media
The British Journal of Radiology
|January 1, 1986
Summary
Delayed reactions to urographic contrast media are uncommon, with most patients experiencing no issues. However, some patients report arm pain or rashes, with specific contrast agents and female sex being risk factors.
Area of Science:
- Radiology
- Pharmacovigilance
- Patient Safety
Background:
- Urographic contrast media are widely used for diagnostic imaging.
- Understanding delayed adverse reactions is crucial for patient safety.
- Previous studies have focused on immediate reactions, necessitating research into post-discharge events.
Purpose of the Study:
- To investigate the incidence and nature of delayed reactions to urographic contrast media.
- To identify patient and contrast media factors associated with these reactions.
Main Methods:
- A questionnaire-based study was conducted on patients undergoing urography.
- 841 completed questionnaires were analyzed, representing an 80% response rate.
- Data collected included patient demographics, contrast media used, and reported delayed reactions.
Main Results:
- 70% of patients reported no delayed reactions.
- Positive experiences (finding the procedure interesting) were reported by 7%.
- Delayed reactions included arm pain (13%), rash (5%), and other symptoms (14%), some resembling iodism. Women reported more rashes than men. Specific contrast ions (meglumine, iodamide) and agents (Conray 420) were associated with increased rashes and arm pain, respectively.
Conclusions:
- Delayed reactions to urographic contrast media are relatively infrequent.
- Patient sex and the specific type of contrast media influence the occurrence of certain adverse events.
- Further research into contrast media composition and patient factors may help minimize adverse reactions.