Group C (n = 20)

Group N (n = 20)

Group D (n = 20)

P value

Onset of sensory block (min)

3.6 ± 1.6

2.0 ± 1.7^*

2.2 ± 1.8^*

<0.05

Recovery time of sensory block (min)

3.4 ± 2.1

9.6 ± 0.7^*

8.1 ± 1.1^*

<0.05

Onset of motor block (min)

7.1 ± 1.4

3.8 ± 2.1^*

4.6 ± 2.2^*

<0.05

Recovery time of motor block (min)

3.7 ± 3.1

10.3 ± 1.2^*

9.1 ± 2.1^*

<0.05

Number of patients who needed analgesia intra operative (VAS > 3)

1

0

0