• Federico Marchetti, Alessandra Maestro, Francesca Rovere, Davide Zanon, Alberto Arrighini, Paolo Bertolani, Paolo Biban, Liviana Da Dalt, Pasquale Di Pietro, Salvatore Renna, Andrea Guala, Francesco Mannelli, Anna Pazzaglia, Gianni Messi, Francesco Perri, Antonino Reale, Antonio Francesco Urbino, Enrico Valletta, Antonio Vitale, Tiziana Zangardi, Maria Teresa Tondelli, Antonio Clavenna, Maurizio Bonati, and Luca Ronfani.
• Department of Pediatrics and Epidemiology and Biostatistics Unit, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy. marchetti@burlo.trieste.it
• Bmc Pediatr. 2011 Jan 1;11:15.

BackgroundVomiting in children with acute gastroenteritis (AG) is not only a direct cause of fluid loss but it is also a major factor of failure of oral rehydration therapy (ORT). Physicians who provide care to paediatric patients in the emergency department (ED) usually prescribe intravenous fluid therapy (IVT) for mild or moderate dehydration when vomiting is the major symptom. Thus, effective symptomatic treatment of vomiting would lead to an important reduction in the use of IVT and, consequently, of the duration of hospital stay and of frequency of hospital admission. Available evidence on symptomatic treatment of vomiting shows the efficacy of the most recently registered molecule (ondansetron) but a proper evaluation of antiemetics drugs largely used in clinical practice, such as domperidone, is lacking.ObjectivesTo compare the efficacy of ondansetron and domperidone for the symptomatic treatment of vomiting in children with AG who have failed ORT.Methods/DesignMulticentre, double-blind randomized controlled trial conducted in paediatric EDs. Children aged from 1 to 6 years who vomiting, with a presumptive clinical diagnosis of AG, and without severe dehydration will be included. After the failure of a initial ORS administration in ED, eligible children will be randomized to receive: 1) ondansetron syrup (0,15 mg/Kg of body weight); 2) domperidone syrup (0,5 mg/Kg of body weight); 3) placebo. The main study outcome will be the percentage of patients needing nasogastric or IVT after symptomatic oral treatment failure, defined as vomiting or fluid refusal after a second attempt of ORT. Data relative to study outcomes will be collected at 30 minute intervals for a minimum of 6 hours. A telephone follow up call will be made 48 hours after discharge. A total number of 540 children (i.e. 180 patients in each arm) will be enrolled.DiscussionThe trial results would provide evidence on the efficacy of domperidone, which is largely used in clinical practice despite the lack of proper evaluation and a controversial safety profile, as compared to ondansetron, which is not yet authorized in Italy despite evidence supporting its efficacy in treating vomiting. The trial results would contribute to a reduction in the use of IVT and, consequently, in hospital admissions in children with AG. The design of this RCT, which closely reflect current clinical practice in EDs, will allow immediate transferability of results.Trial RegistrationClinicalTrials.gov: NCT01257672.

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