Regarding lUGR:
Abdominal circumference is the most accurate measurement to predict IUGR. AC below 10th centile is used as a cutoff. AC should increase by at least 10mm in 2 weeks. AC is measured preferably at the level of the junction of the left and right poal veins,umbilical vein and as round as possible. TEXTBOOK OF OBSTETRICS, Sheila Balakrishnan,2nd edition, page no.205