Comparison between intrathecal hyperbaric bupivacaine and levobupivacaine for ambulatory knee arthroscopy

Table 2 Quality of sensory and motor blocks and post-anesthesia care unit variables per group

Variables	Group BF(n = 33)	Group LF(n = 33)	Group B(n = 32)	Group L(n = 28)
Sensory block
Onset to T12 (min)	6 (3-15)	6 (3-15)	6 (3-12)	7 (3-20)e
Highest level of sensory block (dermatome)	T8 (T12-T4)	T10 (T12-T4)	T10 (T12-T4)a	T10 (T12-T4)
Time to maximum sensory block (min)	15 (6-35)	12 (6-50)	13 (6-35)	20 (6-40)c
Sensory regression	192 ± 66	173 ± 53	179 ± 47	154 ± 50a
Motor block
Time to maximum motor block (min)	9 (3-20)	12 (3-25)	9 (3-25)	12 (3-35)
Motor block regression (min)	115 (60-180)	75 (45-165)a	95 (40-150)	63 (35-120)ae
Time to micturition (min)	196 ± 57	174 ± 54	164 ± 45	151 ± 52a
Time to VAS ≥ 4	200 ± 60	156 ± 61a	162 ± 52a	110 ± 48ace
Time to discharge	288 ± 64	260 ± 61	244 ± 54a	229 ± 55a

Data are presented as the median (min-max) or mean ± SD.

^aP < 0.05 compared with Group BF;

^cP < 0.05 compared with Group LF;

^eP < 0.05 compared with Group B. BF: Hyperbaric bupivacaine plus fentanyl; LF: Hyperbaric levobupivacaine plus fentanyl; B: Hyperbaric bupivacaine; L: Hyperbaric levobupivacaine; VAS: Visual Analog Scale.