ABSTRACT
From October 2014 to June 2015, among 5 800 pediatric patients underwent outpatient sedation in MRI and Special Inspection Departments at our hospital, the incidence of sedation-related ad-verse events was 272%(158 cases), and the mortality rate was 003%(2 cases)in pediatric outpa-tients. The common adverse events were nausea and vomiting(constituent ratio 3214%), regurgitation and aspiration(constituent ratio 2443%), respiratory depression(constituent ratio 2928%), agitation (constituent ratio 1571%)and delayed recovery(constituent ratio 143%). When chloral hydrate was used for sedation, it should be mixed with sugar to prevent the occurrence of nausea and vomiting; young age(especially preterm infant), diseases of respiratory system or nervous system and congenital heart dis-ease were the possible inducements to sedation-related adverse events, and intervention strategy should be performed to decrease the occurrence of adverse events and to improve the quality of sedation in pediatric outpatients.