Fetal growth restriction (FGR) is a known cause of neonatal morbidity and occurs in approximately 10% of all pregnancies. New guidelines have changed the diagnostic criteria for the diagnosis of FGR in recent years from estimated fetal weight (EFW) less than the 10th percentile alone to EFW or abdominal circumference less than the 10th percentile.  Studies have suggested that this change will not change the number of pregnancies diagnosed with FGR.  Diagnosing and treating FGR is important to attempt to improve adverse fetal and neonatal outcomes, including intrauterine fetal demise, fetal and neonatal morbidity, and neonatal death.  This retrospective cohort study compared three different methods of diagnosis of FGR that were used at the Oklahoma Children’s Hospital from 2017 through 2022.

A retrospective cohort study was performed, and the study population consisted of women who received growth ultrasounds from 7/1/2017 through 7/31/2022 who met the following inclusion criteria: singleton gestation, dated by ultrasound prior to 22 weeks’ gestation, ultrasound exams to assess biometry performed at Oklahoma Children’s Hospital, and delivery at Oklahoma Children’s Hospital.  Patients were excluded for multiple gestation or fetal anomaly diagnosed prenatally.  Neonatal patients receiving the diagnosis of SGA were included if born within the ranges of first delivery to latest estimated delivery date for the time period listed above.

Data analysis ongoing.