Table 2 Onset and duration of the sensory and motor blocks, duration of analgesia, time of the first rescue analgesic requirement, and total dose of rescue analgesia over 24 h in the studied three groups

Sensory onset (min)

10.6 ± 2.9

11.3 ± 3.4

12.1 ± 3.6

0.263

Motor onset (min)

13.7 ± 4.1

14.2 ± 3.9

14.3 ± 4.1

0.352

Sensory duration (min)

625.7 ± 25.4***

598.4 ± 22.7***

263.7 ± 15.9

<0.001

Motor duration (min)

542.3 ± 13.7***

519.6 ± 12.8***

197.6 ± 14.3

<0.001

Duration of analgesia (min)

683.4 ± 31.7***

648.7 ± 23.5***

285.7 ± 16.4

<0.001

Time to the first analgesic request (min)

726.3 ± 32.5***

687.5 ± 28.4***

297.6 ± 17.3

<0.001

Total dose of rescue analgesia over 24 h (mg)

35.2 ± 7.4

38.4 ± 8.1

74.8 ± 11.3***

<0.001