Equation of Scott et al for Estimating a Fetal Weight Less Than 1000 Grams

Patient selection: small fetus (premature, intrauterine growth retardation) estimated to weigh less than 1,000 grams

Ultrasound exam: within 7 days of delivery.

Parameters:

(1) head circumference in cm (HC)

(2) abdominal circumference in cm (AC)

(3) femur length in cm (FL)

X =

= (0.66 * LN(HC)) + (1.04 * LN(AC)) + (0.985 * LN(FL))

body weight in grams =

= EXP(X)