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Published on: January 26, 2018
High-dose vs low-dose oxytocin for labor augmentation: a systematic review
Shu-Qin Wei1, Zhong-Cheng Luo, Hui-Ping Qi
1Department of Obstetrics and Gynecology, Saint-Justine Hospital, University of Montreal, Montreal, Quebec, Canada.
American Journal of Obstetrics and Gynecology
|May 11, 2010
Summary
High-dose oxytocin for labor augmentation moderately decreases cesarean section risk and shortens labor duration. While it increases uterine hyperstimulation, it shows no evidence of increased maternal or neonatal morbidity.
Area of Science:
- Obstetrics and Gynecology
- Pharmacology
- Evidence-Based Medicine
Background:
- Labor augmentation is frequently employed to improve labor progress.
- Oxytocin is a primary agent for labor augmentation.
- Optimal dosing strategies require clarification.
Purpose of the Study:
- To systematically review and synthesize evidence on the efficacy and safety of high-dose versus low-dose oxytocin for labor augmentation.
- To evaluate the impact on cesarean section rates and maternal/neonatal morbidity.
Main Methods:
- Systematic review of randomized clinical trials (RCTs).
- Searches conducted in PubMed, MEDLINE, EMBASE, and Cochrane Library until January 2010.
- Inclusion of 10 RCTs involving 5423 women.
Main Results:
- High-dose oxytocin was associated with a reduced risk of cesarean section (RR, 0.85; 95% CI, 0.75-0.97).
- A small increase in spontaneous vaginal delivery (RR, 1.07; 95% CI, 1.02-1.12) and a decrease in labor duration (mean difference: -1.54 hours) were observed.
- Uterine hyperstimulation increased (RR, 1.91; 95% CI, 1.49-2.45), but no increased maternal or neonatal morbidity was found.
Conclusions:
- High-dose oxytocin for labor augmentation appears effective in reducing cesarean delivery rates.
- It also leads to a shorter labor duration.
- The benefits should be weighed against the increased risk of hyperstimulation, with no apparent increase in adverse maternal or neonatal outcomes.
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