Effect of ropivacaine, mepivacaine or the combination of ropivacaine and mepivacaine for epidural anaesthesia on the postoperative recovery in patients undergoing caesarean section: a randomized, prospective, double-blind study

Table 2 The situation of sensory and motor block induced by drugs and the doses of drugs

	Group R (n = 50)	Group MR (n = 50)	Group M (n = 50)	P value
Time for sensory block to reach T10 (min)	9.38 ± 1.67	9.48 ± 1.58	9.06 ± 1.62	0.403
Time for sensory block to reach its maximum (min)	19.26 ± 1.67^a	16.62 ± 1.63	16.12 ± 1.7	< 0.001
Maximum sensory block level	T6 (T6,T6)	T6 (T6,T6)	T6 (T6,T6)	0.366
Doses of drugs (ml)	18.15 ± 1.59	18.02 ± 1.76	18.12 ± 1.67	0.921

Data are presented as mean score ± SD or interquartile range [IQR (range)]. Data were analyzed using analysis of variance (continuous variables) or the Kruskal–Wallis rank sum test for rank data. Group R: epidural anaesthesia with 0.75% ropivacaine; Group MR: epidural anaesthesia with 0.75% ropivacaine + 2% mepivacaine (Volume 1:1); Group M: epidural anaesthesia with 2% mepivacaine
SD standard deviation, IQR interquartile range
^aThe time for sensory block to reach its maximum: There were significant differences between Group R and Group MR as well as between Group R and Group M (P < 0.001) (The p-values are based on Scheffe’s post-hoc test adjusted using the Bonferroni correction), and there was no significant difference between Group M and Group MR (P > 0.05)

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