• Albert K Law, Daniel K Ng, and Keung-Kit Chan.
• Department of Paediatrics, Kwong Wah Hospital, Hong Kong, China.
• Pediatr Int. 2003 Apr 1;45(2):180-5.

ObjectiveTo report the experience of the use of intramuscular (IM) ketamine for endoscopy sedation in children.MethodologyChildren over 6 months of age scheduled for elective endoscopy - esophagogastroduodenoscopy (EGD), bronchoscopy and nasopharyngolaryngoscopy (NPL) were enrolled for (2 mg/kg to 3 mg/kg) intramuscular ketamine sedation. A repeated dose of 2 mg/kg intramuscular ketamine was administered to those who failed the first sedation. Alternative sedation (intravenous midazolam and fentanyl) was given to children who failed ketamine sedation twice. Sedation was regarded as successful if the procedure was completed by endoscopist with a single dose of ketamine.ResultsSixty children were enrolled for the study. Overall success rate in our patients was 78.3%. Failure rate in infants was 50%, i.e. 4 out of 8. For children aged 1-7, the failure rate was 32%. Failure rate dropped markedly to 6.7% for those older than 7 years of age, and it showed significant difference when compared with the other two groups. Two cases of laryngospasm were experienced in the present study.ConclusionIntramuscular ketamine is an effective medication for sedation in endoscopy undertaken in children over age 7 years, but it should be avoided with children under age 7 because of the high failure rate.

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