Group Time

Control

Clonidine

Tramadol

P-value*

Base

90.60 ± 11.13

91.37 ± 12.44

92.13 ± 7.71

0.126

5 minutes

94 ± 6.39

90.93 ± 6.64

93.70 ± 2.87

0.690

15 minutes

87.57 ± 12.64

60.83 ± 14.61

79.80 ± 14.71

0.100

30 minutes

13.85 ± 13.66

93.83 ± 11.09

80.82 ± 15.8

0.723

1 hour

87.40 ± 12.06

53.84 ± 6.42

63.86 ± 6.22

0.419

2 hours

97.23 ± 6.72

30.85 ± 5.40

83.86 ± 5.83

0.425

4 hours

20.86 ± 5.38

50.84 ± 22.8

86.77 ± 5.70

0.383

6 hours

50.85 ± 5.30

33.85 ± 5.51

85.77 ± 5.37

0.952