Comparison of 0.25% S(-)-bupivacaine with 0.25% RS-bupivacaine for epidural analgesia in labour

被引:38
作者
Burke, D [1 ]
Henderson, DJ
Simpson, AM
Faccenda, KA
Morrison, LMM
McGrady, EM
McLeod, GA
Bannister, J
机构
[1] Univ Dundee, Ninewells Hosp & Med Sch, Dundee DD1 9SY, Scotland
[2] Glasgow Royal Matern Hosp, Glasgow, Lanark, Scotland
[3] St Johns Hosp, Livingston, Scotland
关键词
anaesthesia; obstetric; anaesthetic techniques; epidural; pharmacokinetics; enantiomers; anaesthetics local; bupivacaine;
D O I
10.1093/bja/83.5.750
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
We have compared the efficacy of 0.25% S(-)-bupivacaine with 0.25% RS-bupivacaine in providing epidural analgesia for labour in a randomized, multicentre, double-blind study. Analgesia was initiated with 10 ml of the study solution and maintained with 10-ml top-ups. We studied 137 women and treatments were found to be equivalent for onset. duration and quality of block Median onset of pain relief was 12 min for both drugs and median duration was 49 (range 3-129) min and 51 (7-157) min for S(-)-bupivacaine and RS bupivacaine, respectively. The estimated treatment difference for duration of pain relief was -4 (90% CI -13, 6) min. Thirty patients failed to achieve pain relief after the first injection (20 patients after S(-)-bupivacaine and 10 after RS-bupivacaine; P=0.039). However, median duration of pain relief from the first top-up was 82 (range 3-164) min for S(-)-bupivacaine and 76 (22-221) min for RS-bupivacaine. There were no significant differences in the quality of analgesia, as assessed by the investigators. There were no significant differences in the extent of sensory block, percentage of patients with motor block or incidence of adverse events.
引用
收藏
页码:750 / 755
页数:6
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