• Todd A Florin, Terri Byczkowski, Richard M Ruddy, Joseph J Zorc, Matthew Test, and Samir S Shah.
• Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH. Electronic address: Todd.Florin@cchmc.org.
• J. Pediatr. 2015 May 1;166(5):1168-1174.e2.

ObjectivesTo describe utilization of 3% hypertonic saline (HTS) in hospitalized infants and to evaluate the association between HTS use and length of stay (LOS) in a real-world setting.Study DesignThis multicenter retrospective cohort study included infants≤12 months hospitalized with bronchiolitis between October 2008 and September 2011 using the Pediatric Health Information System. HTS use was categorized as trial, rescue, daily, or sporadic. Differences in LOS were compared after matching daily HTS recipients and nonrecipients on propensity score.ResultsThere were 63,337 hospitalizations for bronchiolitis. HTS was used in 24 of 42 hospitals and 2.9% of all hospitalizations. HTS use increased from 0.4% of visits in 2008 to 9.2% of visits in 2011. There was substantial variation in HTS use across hospitals (range 0.1%-32.6%). When used, HTS was given daily during 60.6% of hospitalizations, sporadically in 10.4%, as a trial in 11.3%, and as a rescue in 17.7%. The propensity score-matched analysis of daily HTS recipients (n=953) vs nonrecipients (n=953) showed no difference in mean LOS (HTS 2.3 days vs nonrecipients 2.5 days; β-coefficient -0.04; 95% CI -0.15, 0.07; P=.5) or odds of staying longer than 1, 2, or 3 days. Daily HTS recipients had a 33% decreased odds of staying in the hospital>4 days compared with nonrecipients (OR 0.67; 95% CI 0.47, 0.97; P=.03).ConclusionsVariation in HTS use and the lack of association between HTS and mean LOS demonstrates the need for further research to standardize HTS use and better define the infants for whom HTS will be most beneficial.Copyright © 2015 Elsevier Inc. All rights reserved.

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