The Darlington customised EDD calculator

Based on data from 490 pregnancies and valid for the local Darlington population for dating BPD (outer -inner) measurement. The EDD is customised to take into account the slight variations which occur with parity, maternal age, maternal ponderal index and fetal sex. Programme written by DJR Hutchon copyright ( British Maternal and Fetal Medicine Society, York, England 18 to 19 March 1999 )

Enter dates - NOTE MONTH first ie month/date/year Proposal for valid charts generation REFERENCES
Fetal sex (Leave blank if not known) (M)ale or (F)emale
Parity Age Height (cm) weight Kg Ponderal index =
Date of dating scan
BPD measurement (valid only between 40 to 49 mm) mm Equivalent to weeks_

Gestation on date is weeks

EDD is
Postmature on Consider induction.

This calculator is for educational use. It is believed accurate but no responsibility for accuracy of the results is accepted by the author. David J R Hutchon BSc, MB, ChB, FRCOG Consultant Obstetrician, Memorial Hospital, Darlington, England.
Comments and suggestions are welcome and will be included in the comments section. E-mail to me at DJRHutchon@Postmaster.co.uk
REFERENCES
Hutchon DJR Customised ultrasound dating charts. British Maternal and Fetal Medicine Society, York, England 18 to 19 March 1999
COMMENTS Return to calculator
1/1/1999 Specialist registrars go to lecture notes

About the author