Biparietal diameter of nepalese foetus in different periods of gestation by ultrasonography.

Abstract

This study presents an analysis of 316 primigravidas with their known date of last menstruation. These cases have been attending antenatal clinic from 14 to 40 weeks of gestation. The mean BPD (Biparietal Diameter) values and percentile values were calculated. It was observed that there is a steep rise of growth up to 31 weeks and thereafter a gradual rise up to 40 weeks. The maximum BPD from 31 to 40 weeks was 90.9 mm whereas western workers like Hansmann and Campbell reported 99 mm and 98.1 mm, respectively. Several factors like nutrition and hereditary may have influenced the foetus after 30 weeks leading to low birth weight in our newborns.