Table 3 Block characteristics and total bupivacaine consumption of the groups

Anesthesia readiness time (min)

20.5 (2.3)

18.4 (2.6)

0.0004*

Modified Bromage motor score

2 (0–3)

1 (0–3)

0.0001*

Duration of motor block (min)

185.33 ± 15.49

159.25 ± 20.37

0.0001*

Time for sensory regression to T12 (min)

133.36 ± 15.35

120.43 ± 17.39

0.0005*

Supplementation with general anesthesia

1 (2.5%)

4 (10%)

0.18

Time to the first request for postoperative analgesia (min)

230.47 ± 19.14

190.54 ± 23.30

0.0001*

Number of patients who required pethidine

7 (17.9%)

6 (16.6%)

1

Mean pethidine consumption (mg)

4.4 (9.7)

4.1 (9.4)

0.89

Mean bupivacaine consumption (mg):

Intraoperative

Postoperative

52.26 ± 7.57

65.3 (6.5)

10.00 ± 0.00

63.5 (7.5)

0.0001*

0.26