Calculator for calculating discordant twin growth 15 to 25%.
This calculator can be used to assess whether there is significant discordance in the growth in a twin pregnancy. The smaller twin is assessed against the larger twin. Discordance of 15% (calculation equals 85% ) requires referal for further investigation. Discordance of 25% or more (calculation equals 75% or below) requires direct referal to the RVI. Any additional abnormalities such as abnormal amniotic flid volume, abnormal dopplar or ascites requires similar referal.
This calculator provides a percentage of the smaller parameter over the larger parameter.
Programme written by DJR Hutchon.
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 Gynaecologist, Memorial Hospital,
You are welcome to keep this page and use the calculator off-line.
Reference Advice from Mr Steve Strugis and Mr Ben Ononeze