RT Book, Section A1 Cunningham, F. Gary A1 Leveno, Kenneth J. A1 Dashe, Jodi S. A1 Hoffman, Barbara L. A1 Spong, Catherine Y. A1 Casey, Brian M. SR Print(0) ID 1190766930 T1 Postterm Pregnancy T2 Williams Obstetrics, 26e YR 2022 FD 2022 PB McGraw Hill PP New York, NY SN 9781260462739 LK obgyn.mhmedical.com/content.aspx?aid=1190766930 RD 2024/10/03 AB The adjectives postterm, prolonged, postdates, and postmature are used interchangeably to describe pregnancies that have exceeded a duration considered to be the upper limit of normal. We eschew use of the term postdates because the real issue in many postterm pregnancies is uncertainty in the estimated date of delivery (EDD). Postmature is reserved for the uncommon clinical fetal syndrome in which the newborn has recognizable features indicating a pathologically prolonged pregnancy. Thus, postterm or prolonged pregnancy is our preferred term for an extended pregnancy.