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Related Experiment Videos

When does external cephalic version succeed?

A C Hellström1, B Nilsson, L Stånge

  • 1Department of Obstetrics and Gynecology, Karolinska Institutet Huddinge University Hospital, Sweden.

Acta Obstetricia Et Gynecologica Scandinavica
|January 1, 1990
PubMed
Summary
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External cephalic version (ECV) successfully repositioned fetuses in 58% of cases. Parity, fetal presentation, and amniotic fluid volume significantly influenced ECV success rates in pregnant women.

Area of Science:

  • Obstetrics and Gynecology
  • Maternal-Fetal Medicine

Background:

  • Fetal malpresentation, particularly breech presentation, is a common indication for external cephalic version (ECV).
  • Successful ECV can potentially reduce the rate of cesarean deliveries.
  • Factors influencing ECV success require further elucidation for optimized clinical practice.

Purpose of the Study:

  • To identify factors associated with successful external cephalic version (ECV) in pregnant women with fetal malpresentations.
  • To determine the overall success rate of ECV and analyze its predictors.

Main Methods:

  • A consecutive series of 300 pregnant women with fetal malpresentations underwent attempted ECV during the last trimester.
  • Multivariate logistic regression analysis was employed to identify significant predictors of successful version among 16 variables.

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  • Data were collected between 1984 and 1987.

    • Main Results:

    • The overall ECV success rate after one or more attempts was 58%.
    • Success rates were significantly lower in nulliparous women (39%) compared to parous women (80%).
    • Parity, fetal presentation, and amniotic fluid volume were identified as independent predictors of successful ECV.

    Conclusions:

    • Parity is the most significant factor influencing ECV success, with parous women experiencing higher success rates.
    • Fetal presentation and amniotic fluid volume also play crucial roles in the success of external cephalic version.
    • These findings can aid in patient selection and counseling for ECV procedures.