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External cephalic version: turning a breech baby
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External cephalic version: turning a breech baby

2 min readWeek 35
Key takeaways
2 min
  • Schedule ECV around week 36 of pregnancy when success rates are optimal and baby has sufficient gestational development.
  • Expect a 59% success rate for ECV procedures, with minimal risks including temporary heart rate elevation in 5.7% of cases.
  • Ensure ECV is performed in a medical facility equipped for emergency C-section if complications arise during the procedure.
  • Consider that some breech babies naturally turn head-down by week 37 without medical intervention.
  • Discuss Rh compatibility with your doctor, as ECV carries a 3.7% chance of blood mixing between mother and baby.

External cephalic version (ECV) is a safe medical procedure performed around week 36 of pregnancy where doctors manually turn breech babies head-down using hands on the abdomen. With a 59% success rate and minimal risks, ECV helps avoid C-section deliveries.

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Protecting your teeth during pregnancy

Popular wisdom says that a developing baby steals calcium from mama’s body including her teeth! However, there’s no scientific evidence for this [1]. And yet, tooth decay is common during pregnancy.

The reason is simple: frequent bouts of morning sickness can put tooth enamel to the test because vomit is highly acidic — as a result cavities can develop. Also a change in hormones can lead to hypersensitivity and inflammation of the gums. All of this can lead to tooth decay. Further, a number of studies have confirmed [2] the association of periodontitis (gum disease) with weight deficiency in a newborn. Taking time for self care is just as important for mama as it is for baby.

Here are some simple steps to healthy teeth. Trading refined carbs and sugary snacks for fruits and vegetables not only provides good vitamins for you and baby, but helps protect your teeth [3]. These foods are especially good for maintaining a healthy smile:

  • Milk and dairy products are a great source of calcium that strengthens tooth enamel [4], plus lactose is the only sugar that does not cause tooth decay [5].

  • Fatty fish (such as salmon, sardines, saury, herring) contain a large amount of vitamin D, which contributes to the absorption of calcium [4].

  • Colorful fruits and vegetables (carrots, red apples, pumpkin, bell peppers) have vitamins that support healthy teeth [6].

  • Leafy vegetables are a great source of folate [4] which is necessary for development of the baby, but also is good for mama’s gums [6].


Frequently asked questions

External cephalic version (ECV) is typically performed around week 36 of pregnancy. This timing allows for optimal success rates while ensuring the baby is developed enough for emergency delivery if needed.

ECV has an average success rate of 59.2%. Studies show that ECV performed at weeks 34-35 has higher success rates than procedures done at weeks 37-38.

ECV risks include temporary abnormal heart rate in 5.7% of successful cases, blood mixing between mother and baby in 3.7% of cases, and less than 0.5% risk of persistent heart rate issues or vaginal bleeding. Serious complications like fractures are extremely rare.

ECV is generally safe for low-risk pregnancies and doesn't affect baby's Apgar scores. The procedure is always performed in medical facilities with immediate access to emergency interventions like C-section if needed.

Yes, some breech babies naturally turn into head-down position by week 37. However, if baby hasn't turned by week 36, ECV may be recommended to avoid C-section delivery.

Medical Disclaimer

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or qualified health provider with any questions you may have regarding a medical condition.

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Medically reviewed content

Reviewed by healthcare professionals · Updated March 25, 2025

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