Table 2.

Characteristics of intrathecal blocks with isobaric or hyperbaric levobupivacaine in patients undergoing gynecologic surgery. Values are number of patients in each group, or minutes in mean ± SD [min–max].

	Isobaric: Hyperbaric (n)	Isobaric (min)	Hyperbaric (min)	P value
Time to T10 sensory block	8 : 10	6.6 ± 4.7 [2–15]	2.8 ± 1.1 [1–5]	0.039
Time to T4 sensory block	2 : 9	10.0 ± 7.1 [5–15]	9.1 ± 3.7 [4–15]
Time to peak sensory block	9 : 10	13.8 ± 6.8 [8–30]	15.9 ± 8.1 [7–30]	0.517
Time to modified Bromage score 1	10 : 10	6.9 ± 5.3 [2–20]	2.9 ± 2.9 [1–10]	0.013
Time to modified Bromage score 3	9 : 10	13.6 ± 7.3 [5–30]	8.2 ± 6.8 [1–24]	0.064
Time to incision	6 : 10	17.5 ± 4.6 [11–25]	16.6 ± 4.9 [12–27]	0.623
2-segment regression time	4 : 9	98.3 ± 29.5 [60–123]	110.8 ± 42.9 [60–192]
Regression time to T10	4 : 8	160.0 ± 50.4 [100–222]	158.9 ± 60.0 [91–262]
Regression time to modified Bromage score 2	4 : 9	143.3 ± 74.7 [60–240]	102.4 ± 20.9 [70–131]

Values are compared with Mann-Whitney U-test.