• Maala Bhatt, David W Johnson, Monica Taljaard, Jason Chan, Nick Barrowman, Ken J Farion, Samina Ali, Suzanne Beno, Andrew Dixon, C Michelle McTimoney, Alexander Sasha Dubrovsky, Mark G Roback, and Sedation Safety Study Group of Pediatric Emergency Research Canada.
• Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada.
• JAMA Pediatr. 2018 Jul 1; 172 (7): 678-685.

ImportanceIt is not clear whether adherence to preprocedural fasting guidelines prevent pulmonary aspiration and associated adverse outcomes during emergency department (ED) sedation of children.ObjectiveTo examine the association between preprocedural fasting duration and the incidence of sedation-related adverse outcomes in a large sample of children.Design, Setting, And ParticipantsWe conducted a planned secondary analysis of a multicenter prospective cohort study of children aged 0 to 18 years who received procedural sedation for a painful procedure in 6 Canadian pediatric EDs from July 2010 to February 2015. The primary risk factor was preprocedural fasting duration. Secondary risk factors were age, sex, American Society of Anesthesiologists classification, preprocedural and sedation medications, and procedure type.Main Outcomes And MeasuresFour outcomes were examined: (1) pulmonary aspiration, (2) the occurrence of any adverse event, (3) serious adverse events, and (4) vomiting.ResultsA total of 6183 children with a median age of 8.0 years (interquartile range, 4.0-12.0 years), of whom 6166 (99.7%) had healthy or mild systemic disease (American Society of Anesthesiologists levels I or II), were included in the analysis. Of these, 2974 (48.1%) and 310 (5.0%) children did not meet American Society of Anesthesiologists fasting guidelines for solids and liquids, respectively. There were no cases of pulmonary aspiration. There were 717 adverse events (11.6%; 95% CI, 10.8%-12.4%), of which 68 (1.1%; 95% CI, 0.9%-1.3%) were serious adverse events and 315 (5.1%; 95% CI, 4.6%-5.7%) were vomiting. The odds ratio (OR) of occurrence of any adverse event, serious adverse events, and vomiting did not change significantly with each additional hour of fasting duration for both solids (any adverse event: OR, 1.00; 95% CI, 0.98 to 1.02; serious adverse events, OR, 1.01; 95% CI, 0.95-1.07; vomiting: OR, 1.00; 95% CI, 0.97-1.03) and liquids (any adverse event: OR, 1.00; 95% CI, 0.98-1.02; serious adverse events: 1.01, 95% CI, 0.95-1.07; vomiting: OR, 1.00; 95% CI, 0.96-1.03).Conclusions And RelevanceIn this study, there was no association between fasting duration and any type of adverse event. These findings do not support delaying sedation to meet established fasting guidelines.

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