Intravenous oxytocin alone for cervical ripening and induction of labour
- PMID: 19821304
- PMCID: PMC4164045
- DOI: 10.1002/14651858.CD003246.pub2
Intravenous oxytocin alone for cervical ripening and induction of labour
Abstract
Background: Oxytocin is the commonest induction agent used worldwide. It has been used alone, in combination with amniotomy or following cervical ripening with other pharmacological or non-pharmacological methods.
Objectives: To determine the effects of oxytocin alone for third trimester cervical ripening and induction of labour in comparison with other methods of induction of labour or placebo/no treatment.
Search strategy: We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (January 2009) and bibliographies of relevant papers.
Selection criteria: Randomised and quasi-randomised trials comparing intravenous oxytocin with placebo or no treatment, or with prostaglandins (vaginal or intracervical) for third trimester cervical ripening or labour induction.
Data collection and analysis: Two review authors independently assessed eligibility and carried out data extraction.
Main results: Sixty-one trials (12,819 women) are included.When oxytocin inductions were compared with expectant management, fewer women failed to deliver vaginally within 24 hours (8.4% versus 53.8%, risk ratio (RR) 0.16, 95% confidence interval (CI) 0.10 to 0.25). There was a significant increase in the number of women requiring epidural analgesia (RR 1.10, 95% CI 1.04 to 1.17). Fewer women were dissatisfied with oxytocin induction in the one trial reporting this outcome (5.9% versus 13.7%, RR 0.43, 95% CI 0.33 to 0.56).Compared with vaginal prostaglandins, oxytocin increased unsuccessful vaginal delivery within 24 hours in the two trials reporting this outcome (70% versus 21%, RR 3.33, 95% CI 1.61 to 6.89). There was a small increase in epidurals when oxytocin alone was used (RR 1.09, 95% CI 1.01 to 1.17).Most of the studies included women with ruptured membranes, and there was some evidence that vaginal prostaglandin increased infection in mothers (chorioamnionitis RR 0.66, 95% CI 0.47 to 0.92) and babies (use of antibiotics RR 0.68, 95% CI 0.53 to 0.87). These data should be interpreted cautiously as infection was not pre-specified in the original review protocol.When oxytocin was compared with intracervical prostaglandins, there was an increase in unsuccessful vaginal delivery within 24 hours (50.4% versus 34.6%, RR 1.47, 95% CI 1.10 to 1.96) and an increase in caesarean sections (19.1% versus 13.7%, RR 1.37, 95% CI 1.08 to 1.74) in the oxytocin group.
Authors' conclusions: Comparison of oxytocin with either intravaginal or intracervical PGE2 reveals that the prostaglandin agents probably increase the chances of achieving vaginal birth within 24 hours. Oxytocin induction may increase the rate of interventions in labour.A suggestion that for women with prelabour rupture of membranes induction with vaginal prostaglandin may increase risk of infection for mother and baby warrants further study.
Conflict of interest statement
None known.
Figures
Update of
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Intravenous oxytocin alone for cervical ripening and induction of labour.Cochrane Database Syst Rev. 2001;(3):CD003246. doi: 10.1002/14651858.CD003246. Cochrane Database Syst Rev. 2001. Update in: Cochrane Database Syst Rev. 2009 Oct 07;(4):CD003246. doi: 10.1002/14651858.CD003246.pub2. PMID: 11687060 Updated.
References
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- Christensen F, Tehranifar M, Gonzalez J, Rappaport V, Gilson G, Rayburn W. Randomized trial of concurrent oxytocin and sustained‐release dinoprostone for labor induction [abstract]. American Journal of Obstetrics and Gynecology 2001;184(1):S118. - PubMed
Coleman 1997 {published data only}
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Cummiskey 1990 {published data only}
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- Cummiskey KC, Dawood MY. Induction of labor with pulsatile oxytocin. American Journal of Obstetrics and Gynecology 1990;163:1868‐74. - PubMed
Danezis 1962 {published data only}
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Dawood 1995 {published data only}
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De Leon Casasola 1993 {published data only}
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Dietl 1987 {published data only}
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- Dietl J. Induction of labour by prostaglandins. Personal communication 1987.
Fuchs 2006 {published data only}
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- Fuchs K, Brard L, Hodgman D, Silver H. Prostaglandin E1 gel vs. oxytocin for induction of labor at term. American Journal of Obstetrics and Gynecology 2006;195(6 Suppl 1):S101.
Gibb 1985 {published data only}
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Gillot 1974 {published data only}
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Gloeb 1989 {published data only}
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Gonen 1997 {published data only}
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Hannah 1992 {published data only}
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Hendricks 1964 {published data only}
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Hourvitz 1996 {published data only}
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Kashanian 2007 {published data only}
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Kjos 1993 {published data only}
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- Kjos SL, Henry OA, Montoro M, Buchanan TA, Mestman JH. Insulin‐requiring diabetes in pregnancy: a randomized trial of active induction of labor and expectant management. American Journal of Obstetrics and Gynecology 1993;169:611‐5. - PubMed
Knox 1979 {published data only}
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Larsen 1983 {published data only}
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Lazor 1993 {published data only}
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Leszczynska‐Gorzelak 1993 {published data only}
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Lowensohn 1990 {published data only}
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MacLennan 1988 {published data only}
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- MacLennan AH, Day A, Green RC. Intravaginal PGF2alpha versus intravenous oxytocin to stimulate labour after membrane rupture, a randomised controlled trial. Proceedings of 1st European Congress on Prostaglandins in Reproduction; 1988 July 6‐9; Vienna, Austria. 1988:118.
Mahmood 1995 {published data only}
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Mercer 1993 {published data only}
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Merrill 1999 {published data only}
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Milasinovic 1997 {published data only}
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Mokgokong 1974 {published data only}
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- Morgan‐Ortiz F, Castro EQ, Martinez CBC, Barraza JB, Ramirez IO. Misoprostol and oxytocin for induction of cervical ripening and labor in patients with term pregnancy and premature membrane rupture [Misoprostol y oxitocina para induccion de madurez cervical y trabajo de parto en pacientes con embarazo a termino y ruptura prematura de membranas]. Ginecologia y Obstetricia de Mexico 2002;70:469‐76. - PubMed
Morrison 1992 {published data only}
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Muller 1992 {published data only}
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Pentecost 1973 {published data only}
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Raymond 1989 {published data only}
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Salamalekis 2000 {published data only}
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Satin 1994 {published data only}
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Shennan 1995 {published data only}
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Shennan 2006 {published data only}
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Singh 1993 {published data only}
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Sjostedt 1969 {published data only}
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Srividhya 2001 {published data only}
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Steer 1992 {published data only}
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- Steer PJ. Trial to compare prostaglandins with oxytocin for active management of prelabour rupture of membranes at term. Personal communication 1992.
Tan 2007 {published data only}
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- Tan PC, Valiapan SD, Tay PY, Omar SZ. Concurrent oxytocin with dinoprostone pessary versus dinoprostone pessary in labour induction of nulliparas with an unfavourable cervix: a randomised placebo‐controlled trial. BJOG: an international journal of obstetrics and gynaecology 2007;114(7):824‐32. - PubMed
Vernant 1993 {published data only}
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Welt 1987 {published data only}
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Willcourt 1994 {published data only}
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References to studies awaiting assessment
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Additional references
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