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Updated: Feb 15, 2026

External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
[Obstetrics]
Véronique Othenin-Girard1, Noémie Bouchet1, Riccardo E Pfister2
1Service d'obstétrique, Département de gynécologie et obstétrique, HUG, 1211 Genève 14.
Insights
New guidelines address preterm delivery lung maturation, with short-term benefits but potential long-term risks. Research also explores ultrasound for safe vaginal birth after cesarean and aspirin
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Neonatology
Background:
- Recent guidelines address lung maturation for preterm deliveries after 37 weeks gestation.
- Concerns persist regarding the high number needed to treat and potential neurological effects.
- Established practices for vaginal birth after cesarean and uterine closure are being re-evaluated.
Purpose of the Study:
- To review current evidence on interventions for preterm delivery and maternal-fetal medicine.
- To evaluate the benefits and risks of antenatal corticosteroids for lung maturation.
- To discuss advancements in achieving vaginal birth after cesarean and surgical techniques.
Main Methods:
- Systematic review of recent studies and guidelines.
- Analysis of data on short-term benefits and long-term risks of interventions.
- Evaluation of ultrasound techniques for assessing uterine scar integrity.
- Review of surgical methods for uterine closure during cesarean delivery.
- Discussion of aspirin's role in pre-eclampsia prevention.
Main Results:
- Antenatal corticosteroids show short-term benefits for lung maturation but require a high number of cases to prevent complications, with potential neurological risks.
- Ultrasound measurement of the lower uterine segment is beneficial for assessing risk during attempted vaginal birth after cesarean.
- Optimal uterine closure techniques during cesarean delivery are under investigation.
- Aspirin remains a key consideration for pre-eclampsia risk reduction.
Conclusions:
- Careful consideration of benefits versus risks is needed for lung maturation interventions in late preterm infants.
- Ultrasound assessment and refined surgical techniques can improve safety for vaginal birth after cesarean.
- Aspirin continues to be a valuable tool in managing pre-eclampsia risk.
Abstract:
During the past year, we have renewed interest in old well-known problems. New studies and guidelines have been issued about lung maturation in cases of preterm delivery after 37 weeks of gestation. Short term benefits have been proven but the number of cases needed to treat to prevent one case of respiratory complications is high and with possible neurological long-term effects. Also, several studies have shown the benefits of including the ultrasound measurement of the inferior segment of the uterus in order to attempt vaginal delivery after caesarean section with the lowest risk for uterine rupture, while others studies have shown the best procedure to close the uterus during cesarean section. And finally, we will discuss about an old friend: aspirin to reduce the risk of pre-eclampsia.

