Table 3.

Ramsay calm score among the three groups (mean ± SD).

Groups	Time after extubation (min)
	0	5	10	30	60
A (n = 29)	2.24 ± 0.34	2.38 ± 0.43	2.02 ± 0.65	2.01 ± 0.21	2.00 ± 0.00
B (n = 30)	2.31 ± 0.72	2.21 ± 0.44	2.77 ± 0.38	1.93 ± 0.22	2.00 ± 0.00
C (n = 28)	3.47 ± 0.26*	3.36 ± 0.36*	3.85 ± 0.22*	1.92 ± 0.34	2.00 ± 0.00

^* P < 0.05 versus groups A and B.