Research showed that mothers who believed they were having large babies were nearly five times more likely to ask for a scheduled C-section.
This New York Times article mentions the outcomes of two women who’s babies’ guesstimated birth weights were significantly inaccurate, one by almost fur pounds.
If you’re a numbers person, check these out:
The medical definition of a “large baby” is 8 lbs 13 oz (4,000 grams.)
In a national survey of 1,960 women:
- 1/3 one third of them were told their babies would be “quite large.”
- Only 4 out of 5 babies actually weighed more than 8 lbs 13 oz.
ACOG acknowledges that using an ultrasound in late pregnancy has been associated with an increased rate of c-sections which have no benefit to the baby.
Thus, ultrasonography for estimated fetal weight in the third trimester should be used sparingly and with clear indications.
Source: When a Big Baby Isn’t So Big