• Stephen B Freedman, Vithika Sivabalasundaram, Vanessa Bohn, Elizabeth C Powell, David W Johnson, and Kathy Boutis.
• Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada. stephen.freedman@sickkids.ca
• Acad Emerg Med. 2011 Jan 1;18(1):38-45.

ObjectivesAcute gastroenteritis is a very common emergency department (ED) diagnosis accounting for greater than 1.5 million outpatient visits and 200,000 hospitalizations annually among children in the United States. Although guidelines exist to assist clinicians, they do not clearly address topics for which evidence is new or limited, including the use of antiemetic agents, probiotics, and intravenous (IV) fluid rehydration regimens. This study sought to describe the ED treatments administered to children with acute gastroenteritis and to compare management between Canadian and U.S. physicians practicing pediatric emergency medicine (PEM).MethodsMembers of PEM research networks located in Canada and the United States were invited to participate in a cross-sectional, Internet-based survey. Participants were included if they are attending physicians and provide care to patients <18 years of age in an ED.ResultsIn total, 235 of 339 (73%) eligible individuals responded. A total of 103 of 136 Canadian physicians (76%) report initiating oral rehydration therapy (ORT) in children with moderate dehydration, compared with 44 of 94 (47%) of their U.S. colleagues (p<0.001). The latter more often administer antiemetic agents to children with vomiting (67% vs. 45%; p=0.001). American physicians administer larger IV fluid bolus volumes (p<0.001) and over shorter time periods (p=0.001) and repeat the fluid boluses more frequently (p<0.001). Probiotics are routinely recommended by only 35 of 230 respondents (15%).ConclusionsThe treatment of pediatric gastroenteritis varies by geographic location and differs significantly between Canadian and American PEM physicians. Oral rehydration continues to be underused, particularly in the United States. Probiotic use remains uncommon, while ondansetron administration has become routine. Children frequently receive IV rehydration, with the rate and volume administered being greater in the United States.© 2010 by the Society for Academic Emergency Medicine.

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