Fetal biacromial diameter as a new ultrasound measure for prediction of macrosomia in term pregnancy: a prospective observational study

AbstractObjective: The current study aims to evaluate a simple method for sonographic measurement of the fetal biacromial diameter for prediction of fetal macrosomia in term pregnancy.Materials and methods: The current study was a single center prospective observational study conducted in a tertiary University Hospital from January 2015 to May 2017. We included all consecutive term (37–42 weeks) pregnant women presented to the labor ward for delivery. Ultrasound parameters were measured as biparietal diameter, head circumference, transverse thoracic diameter, mid arm diameter, abdominal circumference, femur length, estimated fetal weight, and amniotic fluid index. The proposed ultrasound formula “Youssef’s formula” to measure the fetal biacromial diameter is: [Transverse thoracic diameter +2 × midarm diameter]. The accuracy of proposed formula was compared to the actual biacromial diameter of the newborn after delivery. The primary outcome of the study was accuracy of sonographic measurement of fetal biac...