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Is it safe? · Pregnancy Smart

When is an external cephalic version done?

Assigned clinical reviewerMichael Yuzefovich· MD, FACOGDraft · pending clinical reviewUpdated

What does the evidence say about external cephalic version timing for a breech baby during pregnancy?

  1. ACOG says external cephalic version may be suggested after 36 weeks, succeeds in more than half of attempts, and is performed near a delivery room with fetal monitoring before and after the attempt. 1
  2. A clinical reference says candidates are at least 36 0/7 weeks with reassuring fetal status and no contraindication to vaginal birth; many clinicians wait until 37 0/7 weeks to reduce the chance of a preterm delivery if a complication occurs. 2
  3. In a Cochrane review of five randomized studies, three trials compared external cephalic version at 34 to 35 weeks with starting at 37 to 38 weeks. Earlier attempts reduced non-cephalic presentation at birth but increased preterm birth from 4.3% to 6.6%; the cesarean comparison was not statistically significant. 3
  4. A specialized German center attempted external cephalic version in 353 singleton breech pregnancies, reported 22.4% success, and found associations with fluid amount, placental location, gestational week, and fetal lie; it had no unexposed comparison group. 4
  5. External cephalic version should stop for significant fetal bradycardia, substantial discomfort, or a difficult turn; the reference advises 30 to 60 minutes of fetal monitoring afterward and allows another attempt later when clinically appropriate. 2

Is external cephalic version timing for a breech baby safe in each trimester?

  • First trimester. External cephalic version is not a first-trimester procedure. Fetal presentation at this stage does not predict the near-term birth position.
  • Second trimester. About one-quarter of fetuses are breech at 28 weeks, while only 3% to 4% remain breech at term. A second-trimester breech finding therefore does not establish that external cephalic version will be needed.
  • Third trimester. External cephalic version may be considered from 36 0/7 weeks, and many clinicians wait until 37 0/7 weeks. Ultrasound, fetal monitoring, and rapid access to cesarean delivery are part of the procedure setting.

Frequently asked questions

At what week is an external cephalic version usually scheduled?

External cephalic version may be offered from 36 0/7 weeks, and many clinicians wait until 37 0/7 weeks. The exact appointment reflects fetal status, presentation, fluid, placenta, prior births, uterine history, and local delivery resources.

What are the chances an external cephalic version works?

ACOG says more than half of external cephalic version attempts succeed, and StatPearls summarizes a mean near 60%. A specialized German center reported 22.4%, showing that population, selection, technique, fetal lie, placenta, and fluid can produce very different local results.

Is external cephalic version painful?

External cephalic version uses firm pressure on the abdomen and can be uncomfortable. The clinical reference says the attempt should stop for significant discomfort, fetal bradycardia, or a turn that is not achieved easily. Ask the hospital how comfort options are handled.

What happens if external cephalic version does not turn the baby?

After an unsuccessful external cephalic version, the team rechecks fetal status and discusses another attempt or the birth plan. ACOG notes that most persistent breech fetuses are born by planned cesarean, while selected hospitals may offer vaginal breech birth under specific criteria.

Can external cephalic version be tried more than once?

Yes. ACOG says external cephalic version may be tried again if a successfully turned fetus returns to breech. StatPearls also allows another attempt during the same admission or later after an unsuccessful attempt when the person remains an appropriate candidate.

What does research say about external cephalic version before 36 weeks?

A Cochrane review found that starting at 34 to 35 weeks reduced non-cephalic presentation at birth, but preterm birth was more frequent than when version began at 37 to 38 weeks. The cesarean difference did not reach statistical significance, so earlier scheduling is not a simple advantage.

When is external cephalic version not offered?

External cephalic version is not offered when vaginal birth itself is contraindicated, such as placenta previa, vasa previa, or a prior classical cesarean incision. Nonreassuring fetal status, severe low fluid, and some fetal or uterine conditions also require careful assessment or rule out an attempt.

What monitoring is used for external cephalic version?

External cephalic version includes ultrasound to confirm presentation, placenta, fluid, and relevant anatomy, plus fetal assessment before and during the attempt. StatPearls advises fetal heart-rate monitoring for 30 to 60 minutes after either a successful or unsuccessful attempt.

Related in the library

References

  1. If Your Baby Is Breech

    ACOG · https://www.acog.org/womens-health/faqs/if-your-baby-is-breech

  2. External Cephalic Version

    StatPearls via NCBI Bookshelf · https://www.ncbi.nlm.nih.gov/books/NBK482475/

  3. External cephalic version for breech presentation before term

    PubMed · https://pubmed.ncbi.nlm.nih.gov/26222245/

  4. External cephalic version at 38 weeks’ gestation at a specialized German single center

    NIH PMC · https://pmc.ncbi.nlm.nih.gov/articles/PMC8405029/

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.