Customized estimated fetal weight: a novel antenatal tool to diagnose abnormal fetal growth
American Journal of Obstetrics and Gynecology, 06/15/2012
Kase BA et al. – CustEFW was a better predictor of abnormal birth weight and adverse outcomes compared to traditional population based EFW standards.Methods
- Historical cohort using prenatal ultrasound examination data at ≥ 24 weeks over a one year period.
- Ultrasound–derived estimated fetal weight (EFW) and growth percentile (popEFW) were reported and compared to a customized EFW
- 782 women met inclusion criteria. More fetuses were identified as SGA (15.1% vs. 3.8% p<0.0001) and LGA (6.8% vs. 1.7%; p= <0.0001) using custEFW and adverse perinatal outcomes were more frequent among those identified by the custEFW compared to the popEFW.
- Both SGA and LGA diagnosed by CustEFW were predictive of a neonatal SGA (likelihood ratio [LR] + = 8.64 ) and LGA (LR + = 15.4 ).