Time

(on coughing)

Group A (bupivacaine)

N = 50

Group B (Pethidine)

N = 50

P value

4h

3.7 ± 1.7

2.9 ± 1

0.005

8h

3.8 ± 1.9

3.2 ± 1.4

0.0753

12h

4.7 ± 2.1

3.3 ± 1.4

0.001

24h

2.8 ± 1.4

2.2 ± 0.8

0.0099