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Updated: May 25, 2026

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Interventions for helping to turn term breech babies to head first presentation when using external cephalic version
Catherine Cluver1, G Justus Hofmeyr, Gillian Ml Gyte
1Department of Obstetrics and Gynaecology, Faculty of Health Sciences, Stellenbosch Universityand Tygerberg Hospital, PO Box 19063, Tygerberg, Western Cape, 7505, South Africa. cathycluver@hotmail.com.
Betastimulants facilitate external cephalic version (ECV) for breech presentation, increasing cephalic births and reducing C-sections. Further research is needed on tocolysis benefits and risks.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Clinical Trials and Evidence Synthesis
Background:
- Breech presentation at term is associated with increased obstetric complications.
- External cephalic version (ECV) aims to convert breech to cephalic presentation before birth.
- Interventions like tocolysis are used to facilitate ECV success.
Purpose of the Study:
- To assess the effectiveness of interventions (tocolysis, fetal acoustic stimulation, regional analgesia, amnioinfusion, opioids) in facilitating ECV for term breech presentation.
- To evaluate the impact of these interventions on ECV success rates and birth outcomes.
Main Methods:
- Systematic review and meta-analysis of randomized and quasi-randomized controlled trials.
- Searched Cochrane Pregnancy and Childbirth Group's Trials Register and reference lists.
- Included 25 studies with 2548 women, assessing eligibility and trial quality independently.
Main Results:
- Betastimulant tocolysis increased cephalic presentation in labor (RR 1.38) and reduced caesarean sections (RR 0.82).
- Regional analgesia combined with tocolysis improved successful ECV rates (RR 0.67) but did not significantly alter labor presentation or C-section rates.
- Insufficient data existed for fetal acoustic stimulation, amnioinfusion, and systemic opioids; no significant difference in fetal bradycardia was noted with tocolysis.
Conclusions:
- Betamimetics are recommended to facilitate ECV, improving cephalic presentation and reducing C-sections.
- Further research is warranted on the benefits and risks of tocolysis, and the role of regional analgesia and other adjuncts.
- Limited evidence suggests nitroglycerine is not effective for facilitating ECV.
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