Time

Ketamine

(N=30)

Bupivacaine

(N=30)

^ t-test

Outcome of ketamine respect to Bupivacaine

Mean±SD

Range

Post-operative pain perception (VAS-10), Mean±SD

Minute-5

0.6±0.32

0.7±0.5

0.434

-0.1±0.11

-0.4–0.21

Minute-10

0.7±0.23

0.8±0.4

0.250

-0.1±0.11

-0.4–0.11

Minute-15

0.8±0.42

1.0±0.4

0.109

-0.2±0.1

-0.4–0.0

Minute-30

1.2±0.25

1.5±0.6

0.071

-0.3±0.1

-0.6–0.0

Minute-60

2.1±0.15

2.4±0.7

0.058

-0.3±0.2

-0.6–0.0

Minute-90

2.2±0.14

2.5±0.7

0.059

-0.3±0.21

-0.6–0.0

Minute-120

2.6±0.80

3.15±0.91

<0.01*

-0.8±0.21

-1.2–-0.41

Minute-150

3.5±0.51

4.13±0.71

<0.01*

-1.0±0.21

-1.3–-0.61

Minute-180

3.7±0.50

4.17±0.71

<0.01*

-1.1±0.21

-1.5–-0.81

Analgesia prerequisite, Mean±SD

Time to first rescue analgesia (minutes)

157.0±26.9

122.0±35.2

<0.001*

35.0±8.1

18.8–51.2

Total 24-hours analgesia dose (gm)

0.9±0.2

1.2±0.3

<0.001*

-0.3±0.1

-0.5–-0.2

Parent’s satisfaction, (n, %)

Grades

RR

95% CI

Fair

2 (6.71%)

17 (56.7%)

#<0.001*

0.12

0.03–0.47

Good

7 (23.31%)

8 (26.7%)

Reference

Very good

10 (33.3%)

4 (13.3%)

Excellent

11 (36.7%)

1 (3.3%)