The estimated fetal weight can be estimated from fetal ultrasound biometry based on a formula from the INTERGROWTH-21 study.
Patient selection: ultrasound within 1 week of delivery
(1) abdominal circumference (AC) in cm
(2) head circumference (HC) in cm
abdominal circumference in meters =
= (abdominal circumference) / 100
head circumference in meters =
= (head circumference) / 100
= 5.084820 - (54.06633 * ((AC in meters)^3)) - (95.80072 * ((AC in meters)^3) * LN(AC in meters)) + (3.13637 * (HC in meters))
estimated fetal weight in grams =
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Specialty: Obstetrics & Gynecology