VAS post-operative

Group A (n = 20)

Group B (n = 20)

p value

Mean ± SD

Mean ± SD

After extubation

6.7 ± 1.13

0.4 ± 0.68

0.001*

30 min

6.6 ± 1.39

0.5 ± 0.69

0.001*

1 hr

5.8 ± 1.99

0.9 ± 0.85

0.001*

2 hr

4.7 ± 2.05

1.3 ± 0.66

0.001*

4 hr

3.3 ± 1.66

2.4 ± 0.94

0.041^#

6 hr

2.8 ± 1.51

1.8 ± 1.01

0.018^#

8 hr

2.4 ± 1.23

2 ± 1.03

0.271

12 hr

2.2 ± 1.36

1.8 ± 0.92

0.283

24 hr

2.4 ± 1.23

1.7 ± 1.23

0.080