Objective: Adverse reactions are sometimes induced by contrast media used for medical imaging and can be life-threatening. Thus, appropriate management is important for patient safety. The purpose of this study was to clarify the actual management of adverse reactions induced by contrast media in hospitals, the opportunities for intervention by hospital pharmacy departments and the attitudes of hospital pharmacists regarding the risk of adverse reactions.Methods: A self-administered questionnaire survey was conducted in the pharmacy departments of 16 hospitals (approximately 200 to 1,000 beds) located in the Tokyo metropolitan area of Japan. The survey asked about the presence or absence of internal rules or manuals regarding contrast media administration at each hospital, the management status of patients with risk factors for adverse reactions, the opportunities for interventions by pharmacists, and the opportunities for discussion regarding contrast media administration among pharmacists and other professionals.Results: Of the 16 hospitals, 10 responded to the questionnaires, and 7 of them had internal rules or manuals. These rules or manuals stipulated actions such as “do not administer contrast media” to patients with risk factor(s) for adverse reactions. For inpatients, there were opportunities for pharmacist interventions, such as drug management and guidance services and initial interviews upon hospital admission. However, for outpatients the opportunities for interventions were limited. At 5 of the 10 hospitals, pharmacists discussed contrast administration with physicians, radiologists, and other healthcare professionals.Conclusion: The present study reveal that many hospitals take great care in deciding on the administration of contrast media to patients at risk of adverse drug reactions. Our results indicate that the limited opportunities for “outpatient intervention" is an issue in the hospital pharmacy department's participation for proper use of contrast media.

Objective: Contrast media side effects range from minor ones such as itching and vomiting to life-threatening ones such as hypotension and loss of consciousness. The purpose of this study was to determine how contrast media side effects are actually managed in hospitals nationwide, as well as to identify opportunities for the pharmacy department to be involved in contrast media administration, and pharmacists’ awareness of the risk of contrast media side effects. Methods: A self-administered, unmarked questionnaire survey was conducted in the pharmacy departments of 2,000 hospitals nationwide. The survey asked about the existence of internal rules and manuals regarding contrast media at each facility, how to deal with patients at risk for side effects, opportunities for intervention with patients by the pharmacy department, and opportunities for discussion among pharmacists and other professionals regarding the administration of contrast media. Results: Of the 2,000 facilities, 96 responded to the questionnaire, among which 69 had internal regulations or manuals. In those with manuals, the manuals stipulated measures such as not administering contrast media or administering premedication in the case of patients with a history of contrast media side effects. In facilities where the manual recommended premedication, it was found that premedication was administered in both inpatient and outpatient settings. Regarding the role of the pharmacy department, it was found that intervention in all items related to risk factors for adverse drug reactions was achieved for only about 10% of the outpatients. Conclusion: This study revealed that many facilities are involved in the management of contrast media side effects. The results indicate that there is scope for pharmacy departments to intervene more proactively in outpatient settings to ensure appropriate contrast media use in the future.