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Table 2 Demographic data of the two groups

From: Differences in heart rate variability may be related to the appearance of postoperative pain in patients undergoing breast cancer surgery

 

Group A

Group B

p value

Age (years)

59 ± 9

63 ± 16

0.64

Height (cm)

153 ± 5

157 ± 12

0.60

Weight (kg)

57 ± 17

56 ± 9

0.96

Anesthetic time (min)

110 ± 26

77 ± 12*

0.03

Operation time (min)

69 ± 26

46 ± 10

0.10

Remifentanil dosage during surgery (mg)

0.59 ± 0.22

0.48 ± 0.20

0.37

Sevoflurane dose during surgery (mL)

32 ± 9

25 ± 3

0.17

Fluid balance (mL)

742 ± 243

575 ± 202

0.23

Blood loss (mL)

41 ± 28

23 ± 8

0.28

  1. Demographic data of the two groups
  2. Group A (16 patients whose postoperative pain did not increase 12 h after the surgery)
  3. Group B (four patients whose postoperative pain increased 1 h after the surgery)
  4. Data are expressed as means ± SD
  5. *p < 0.05 compared with group A