There was no statistically significant difference in the proportion of sedative drugs midazolam usage -LSB- @ % ( @/@ ) vs. @ % ( @/@ ) , ( @ ) = @ , P = @ -RSB- and the rate of analgesia success -LSB- @ % ( @/@ ) vs. @ % ( @/@ ) , ( @ ) = @ , P = @ -RSB- and analgesia success -LSB- @ % ( @/@ ) vs. @ % ( @/@ ) , ( @ ) = @ , P = @ -RSB- between sufentanil and fentanyl group .