Table 7 Postoperative analgesia characteristics

-The duration to 1st PCA analgesic demand after surgery (minutes)

-Postoperative nalbuphine consumption (mg)

 Postop. 8 h

 Postop. 16 h

 Postop. 24 h

-Postoperative rescue ketorolac requirements and consumption

 No. of rescue ketorolac requirements over 24 h

 Total postoperative ketorolac consumption (mg) at 24 h

386.84 ± 75.96

10.23 ± 1.28

22.17 ± 2.97

32.74 ± 4.25

1.26 ± 0.65

40.38 ± 20.28

542.34 ± 114.52^#

6.82 ± 0.39^#

15.89 ± 1.64^#

23.66 ± 2.33^#

0.73 ± 0.44^#

19.61 ± 14.27^#

P < 0.05

P < 0.05

P < 0.05

P < 0.05

P < 0.05

P < 0.05