Variables

Group C (N = 27)

Group A (N = 28)

Group M (N = 28)

p

VAS (pain score)

H 0.00

3 [3 - 4]

0 [0 - 0]

0 [0 - 0]

<0.001**

H 1:00

3 [2 - 3]

0 [0 - 1]

0 [0 - 2]

<0.001**

H 2:00

3 [2 - 3]

1[1 - 2]

1 [1 - 1]

<0.001**

H 3:00

3 [2.5 - 3]

2 [1 - 2]

1 [1 - 2]

<0.001**

H 6:00

4 [4 - 4.5]

3 [2 - 3]

2 [1 - 2]

<0.001**

H 12:00

4 [4 - 4.5]

3.5 [3 - 4]

2 [1 - 3]

<0.05*

H 24:00

4 [4 - 5]

3.5 [3 - 4]

3 [2 - 3]

<0.05*

Duration of the block (Mean ± SD) (minutes)

345.3 ± 20.6

453.7 ± 12.8

573.9 ± 9.6

0.02*

p₂ = 0.017*

Total post-operative morphine used (Mean ± SD) (mg)

17 ± 2.5

8 ± 2.5

6 ± 1.5

<0.05*

p₂ = 0.52

Post-operative complications

Hypotension

1 (3.3%)

2 (6.7%)

3 (10.0%)

0.49

Bradycardia

0 (0.0%)

1 (3.3%)

2 (6.7%)

0.32

Respiratory depression

0 (0.0%)

1(3.3%)

2 (6.7%)

0.37