• Ning Zhang and Ming-jun Xu.
• Department of Anesthesiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
• J. Obstet. Gynaecol. Res. 2015 Feb 1; 41 (2): 214-21.

AimTo evaluate the effect and quality of epidural neostigmine and clonidine added to initial spinal analgesia in labor analgesia.MethodsA systematic search was conducted in the Medline, Embase, Cochrane Library and China National Knowledge Infrastructure electronic databases. Case-control studies reporting epidural administration of neostigmine and clonidine for labor analgesia were retrieved. For continuous variables, mean differences (MD) and 95% confidence intervals (CI) were calculated; for binary classification variables, odds ratio (OR) and risk ratios (RR) with their 95% CI were analyzed.ResultsA total of four case-control studies, including 280 parturients, were identified in this meta-analysis. The results showed that epidural clonidine and neostigmine significantly prolonged initial analgesia (MD = 37.79, 95% CI = 9.37-66.21, P = 0.0.009) and reduced hourly local anesthetics and opioid administration (MD = -5.49, 95% CI = -6.78, -4.21, P < 0.0001). There was no significant difference in total duration of labor, mode of delivery (cesarean section rate or instrumental delivery rate) and Apgar scores of the neonates in the two groups.ConclusionEpidural administration of neostigmine and clonidine, following the spinal injection of local anesthetic, has a stronger analgesic effect in managing labor pain and reduces hourly anesthetic consumption. No obvious adverse reactions were found.© 2014 The Authors. Journal of Obstetrics and Gynaecology Research © 2014 Japan Society of Obstetrics and Gynecology.

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