Fetal Medicine CALCULAROS

Fetal growth assessment

Biometry at 14-42 weeks

Please record the following information

weeks
days
 
 z-score centile
mm
  
mm
  
mm
  
 

Estimated fetal weight at 22-42 weeks

Estimated fetal weight from the measurements of HC, AC and FL:   grams
Z-score (SDs away from the expected normal mean for this gestation):   (centile:  )
Head circumference (mm)
 
  median
  10th and 90th centiles
Abdominal circumference (mm)
 
  median
  10th and 90th centiles
Femur length (mm)
 
  median
  10th and 90th centiles
Estimated fetal weight (g)
 
  median
  5th, 10th, 90th and 95th centiles

The measurements of fetal HC, AC and FL are plotted on the reference range with gestational age reported by: Snijders RJ, Nicolaides KH. Fetal biometry at 14-40 weeks’ gestation. Ultrasound Obstet Gynecol 1994; 4: 34-48 .

The estimated fetal weight from the measurements of HC, AC and FL is derived from the formula reported by: Hadlock FP, Harrist RB, Martinez-Poyer J. In utero analysis of fetal growth: a sonographic weight standard. Radiology 1991; 181: 129-133 .

The estimated fetal weight is plotted on the reference range for gestational age derived from the formula reported by: Nicolaides KH, Wright D, Syngelaki A, Wright A, Akolekar R. Fetal Medicine Foundation fetal and neonatal population weight charts. Ultrasound Obstet Gynecol 2018; doi:10.1002/uog.19073 PDF.

Please wait…