A Survey of Practicing Radiologists on the Use of Premedication Prior to Intravenous Iodinated Contrast Medium Administration.

Use of rapid IV premedication in urgent settings has increased since 2009 following updated ACR guidelines, but there is disagreement over whether one or two corticosteroid doses is required. Despite reported high reliance on ACR guidelines, deviations from those guidelines remain common. In general, when ACR guidelines were not followed, it was in a risk-averse direction.