( 2 ) D0 .4 and D0 .8 groups showed lower RS and VAS scores than those of control group , Ramsay sedative score in groups D0 .4 and D0 .8 was higher than that in control group ( RS : 1.400.51 , 1.200.42 vs. 1.900.56 ; VAS : 1.500.52 , 0.800.63 vs. 2.500.52 ; Ramsay : 2.100.56 , 2.400.51 vs. 1.600.51 , P < 0.05 or P < 0.01 ) , and VAS score in group D0 .8 was lower than that in D0 .4 group ( P < 0.01 ) .