Comparing the relation between ultrasound-estimated fetal weight and birthweight in cohort of small-for-gestational-age fetuses.

Introduction: Small-for-gestational-age (SGA) confers a higher perinatal risk of adverse outcomes. Birthweight cannot be accurately measured until delivery, therefore accurate estimated fetal weight (EFW) based on ultrasonography is important in identifying this high-risk population. We aimed to establish the sensitivity of detecting SGA infants antenatally in a unit with a selective third-trimester ultrasound policy and to investigate the association between EFW and birthweight in these babies.