RT Book, Section A1 Rahimian, Jeannine A2 DeCherney, Alan H. A2 Nathan, Lauren A2 Laufer, Neri A2 Roman, Ashley S. SR Print(0) ID 1159954093 T1 Disproportionate Fetal Growth T2 CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071833905 LK obgyn.mhmedical.com/content.aspx?aid=1159954093 RD 2024/03/28 AB Weight at delivery once was considered evidence of prematurity (birthweight 4500 g). These criteria later were revised upon the realization that birthweight can be reflective of other pathologic processes aside from prematurity. Abnormalities in fetal growth at each end of the spectrum—both large for gestational age fetuses and fetuses with suspected intrauterine growth restriction—are associated with an increased risk of adverse perinatal outcome. Normative standards applying to such ultrasound parameters as estimated fetal weight, abdominal circumference, and head circumference (HC) were developed.