ULTRASONOGRAPHIC ESTIMATION OF FETAL AGE BY HEAD CIRCUMFERENCE MEASUREMENTS IN INDIAN POPULATION

Abstract

The present cross sectional study was designed to determine the gestational age by fetal Head Circumference measurement with its 2 standard deviations in North Indian population. 200 consecutive, healthy gravid patients with optimal menstrual histories were included in a prospective study from Delhi & nearby regions. The Head Circumference of fetus along with other parameters were measured from 12 to 40 weeks gestation and presented in tabulated form. The use of this table is recommended in clinical practice, to accurately determine mean fetal head circumference at each gestational age in India. This is expected to give more accurate gestational age estimation than the western tables prepared on Caucasian population, which are still followed in our country.