The use of three parameters by the equation in Weiner (1985) can offer improved accuracy when compared to equations using one or two parameters.
estimated fetal weight in grams =
=10^(1.6553 + (0.03986 * (head circumference in cm)) + (0.0127 * (abdominal circumference in cm)) + (0.00265 * (biparietal diameter in cm)))
Limitations: Abdominal circumference can be difficult to measure accurately by ultrasound.
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Specialty: Obstetrics & Gynecology, Pedatrics