NIMBP (mmhg)

Group A (n = 20)

Group B (n = 20)

p value

Mean ± SD

Mean ± SD

Intraoperative:

Before epidural insertion

97.9 ± 7.7

97.5 ± 8.21

0.875

After epidural insertion

89.1 ± 5.02

88.8 ± 8.98

0.914

After intubation

92.4 ± 4.55

84.5 ± 20.11

0.095

After skin incision

90.9 ± 10.13

84.1 ± 12.79

0.070

15min

82.7 ± 9.56

77.6 ± 9.44

0.098

30min

85.4 ± 11.8

79.6 ± 9.09

0.089

1 hr

84.6 ± 13.69

77.3 ± 11.03

0.071

After extubation

92.7 ± 10.06

88.6 ± 11.21

0.231

Postoperative:

30 min

84.7 ± 12.01

82.8 ± 7.73

0.555

1 hr

87.2 ± 10.98

84.8 ± 5.76

0.394

2hr

84.1 ± 6.45

83.5 ± 5.38

0.751

4hr

86.5 ± 5.81

84.2 ± 5.27

0.197

6hr

85.4 ± 6.56

85.1 ± 5.48

0.876

8hr

86.1 ± 4.8

84.7 ± 4.5

0.347

12hr

84.3 ± 4.31

85.6 ± 5.55

0.413

24hr

89.6 ± 4.31

90.8 ± 1.88

0.261