( 2 ) The recovery time of awareness and extubation time in the treatment group were significantly earlier than those in the control group [ recovery time of awareness : ( 5.65 + / - 2.34 ) min vs ( 8.87 + / - 6.84 ) min , P < 0.01 ; extubation time : ( 7.23 + / -4.35 ) min vs ( 10.62 + / -8.16 ) min , P < 0.05 ] .