• Matthew S Davenport, Benjamin M Mervak, James H Ellis, Jonathan R Dillman, N Reed Dunnick, and Richard H Cohan.
• From the Department of Radiology (M.S.D., B.M.M., .H.E., J.R.D., N.R.D., R.H.C.), Division of Abdominal Imaging (M.S.D., J.H.E., N.R.D., R.H.C.); Section of Pediatric Imaging (J.R.D.), and Michigan Radiology Quality Collaborative (M.S.D.), University of Michigan Health System, 1500 E Medical Center Dr, Ann Arbor, MI 48108.
• Radiology. 2016 May 1; 279 (2): 492-501.

PurposeTo estimate the effect of an oral 13-hour inpatient corticosteroid premedication regimen on length of stay, hospital cost, and hospital-acquired infections (HAIs) by using a combination of real and hypothetical study populations.Materials And MethodsInstitutional review board approval was obtained and informed consent waived for this HIPAA-compliant retrospective study. Inpatients who received an oral 13-hour corticosteroid premedication regimen before contrast material-enhanced CT (n = 1424) from 2008 to 2013 were matched by age, sex, and year when CT was performed to a control cohort (n = 1425) of patients who underwent contrast-enhanced CT without premedication and who had similar rates of 13 comorbid diseases. Length of stay in the hospital and time from admission to CT were compared by using the Mann-Whitney U test. Rates of prospectively reported HAIs were compared by using χ(2) tests. The indirect cost and risk of HAI with premedication were estimated by using published data.ResultsPremedicated inpatients had a significantly longer median length of stay (+25 hours; 158 vs 133 hours, P < .001), a significantly longer median time to CT (+25 hours, 42 vs 17 hours, respectively; P < .001), and a significantly greater risk of HAI (5.1% [72 of 1424] vs 3.1% [44 of 1424], respectively; P = .008) compared with nonpremedicated control subjects. On the basis of these data and existing references, the prolonged length of stay was estimated to result in 0.04 HAI-related deaths and a cost of $159 131 (in U.S. dollars) for each prevented reaction of any severity and 32 HAI-related deaths and a cost of $131 211 400 for each prevented reaction-related death.ConclusionOral 13-hour inpatient corticosteroid prophylaxis is associated with substantial cost relative to its modest benefit, and may cause more indirect harm than the direct harm that it prevents.(©) RSNA, 2015.

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