• Alan L Nager and Vincent J Wang.
• Department of Pediatrics, Division of Emergency and Transport Medicine, Children's Hospital Los Angeles, University of Southern California and the Keck School of Medicine, Los Angeles, CA, USA. anager@chla.usc.edu
• Am J Emerg Med. 2010 Feb 1;28(2):123-9.

ObjectiveThe purpose of this study is to test the efficacy of ultrarapidly infused vs rapidly infused intravenous (IV) hydration in pediatric patients with acute gastroenteritis and moderate dehydration.MethodsPatients 3 to 36 months, with vomiting and/or diarrhea and moderate dehydration, were eligible. Subjects were randomly assigned "ultra" (50 mL/kg normal saline for 1 hour) vs "standard" (50 mL/kg normal saline for 3 hours) after failing an oral fluid challenge. Subjects were weighed and had serum electrolyte testing, and urine was obtained before/after IV hydration. Input/output and vital signs were tabulated hourly during the study. Subjects were discharged after fulfilling specified criteria. A follow-up questionnaire was completed 24 hours after discharge. Comparison data included success and timing of rehydration, number of patients who returned and/or were admitted, output during the rehydration period, laboratory differences, and serious complications.ResultsEighty-eight of 92 subjects completed the study: 45 ultra and 43 standard. Four patients failed treatment (1 ultra and 3 standard), were hospitalized, and excluded from the study. Groups were similar regarding sex, days of symptoms, episodes of vomiting/diarrhea before treatment, capillary refill time, tears, and vital signs and laboratory results. No subject had evidence of serious complications. Ninety-one percent of subjects completed the follow-up questionnaire. Seven ultra and 6 standard subjects returned. Six ultra subjects received oral fluid, one received IV fluid, and all were discharged. Five standard subjects received oral fluid, one received IV fluid, and all were discharged.ConclusionBased on this pilot study, ultrarapid hydration for 1 hour preliminarily appears to be an efficacious alternative to standard rapid hydration for 3 hours and improves emergency department throughput time.Copyright 2010 Elsevier Inc. All rights reserved.

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