RESUMEN
Objective To observe the effects of intranasal dexmedetomidine (DM)as premedi-cation on postoperative behavioral outcomes in children.Methods Sixty ASA physical status Ⅰ or Ⅱchildren of both genders,2-5 years,weighing 10-30 kg,undergoing hernia surgery,were equally as-signed into three groups (n =20 each)using a random number table:control group (group C),mid-azolam group(group M)and dexmedetomidine group(group D).Thirty minutes before anesthesia in-duction,the children were respectively received intranasal normal saline 0.02 ml/kg (group C),in-tranasal midazolam 0.2 mg/kg (group M)and intranasal DM 2 μg/kg (group D).The sedation score of children apart from parents,the receipt score of face mask for sevoflurane anesthesia induction,the postoperative recovery time,adverse effects,and the percentage of patients requiring rescue analgesic were recorded.To observe the postoperative behavioral outcomes on 1th、7th、30th day using the PH-BQ.Results Compared with group C,the sedation score and the receipt score of face mask of groups M and D were significantly increased (P <0.05).Compared with groups C and M,the adverse effects and the percentage of patients requiring rescue analgesic of group D were decreased (P <0.05).The incidence of the postoperative behavioral outcomes of group C was higher than groups M and D on 1th,7th day (P <0.05).And on 30th day after operation,there was no significant difference among three groups.Conclusion Intranasal dexmedetomidine as premedication can significantly decrease the incidence of the postoperative behavioral outcomes in children.