114 children scheduled for adenotonsillectomy under sevoflurane anesthesia were allocated randomly into 1 of the 3 groups to receive dezocine 0.1 mgxkg ( -1 ) ( group D , n = 38 ) , fentanyl 1 gkg ( -1 ) ( group F , n = 38 ) , or saline ( group S , n = 38 ) just before the end of anesthesia .