outcomes and is a research and public health imperative. As soon as data from the last menstrual period, the first accurate ultrasound examination, or both are obtained, the gestational age and the estimated due date (EDD) should be determined, discussed with the patient, and documented clearly. The American College of Obstetricians and Gynecologists - acog Acog changes pregnancy dating recommendations gbcn Key points included the following. Optimal time for dating remains the first trimester. No role for elective delivery in women with suboptimally dated pregnancies. Consider an interval ultrasound scan for fetal weight and gestational age 3 to 4 weeks after the first scan Fetal growth restriction may be identified. Acog is a nonprofit organization of women s health care physicians advocating highest standards of practice, continuing member education and public awareness of women s health care issues. Between 22 0/7 weeks and 27 6/7 weeks of gestation, ultrasonography dating has an accuracy of 1014 days (19). More Programs, view these additional important programs and initiatives: acog Meetings Events, green Journal. None of these methods has been shown to be superior. ' 15' 30'. A prospective cross-validation of established dating formulae in in-vitro fertilized pregnancies. All identified COI are thoroughly vetted and resolved according to PIM policy. When prostaglandin is used, routine fetal heart monitoring should be performed because of the risk of uterine hyperstimulation. Estimating fetal age: computer-assisted analysis of multiple fetal growth parameters. Post-term pregnancy is associated with risks to the fetus, including increased perinatal mortality rate, low umbilical artery pH levels at delivery, low 5-minute Apgar scores, dysmaturity syndrome, and increased risk of death within the first year of life. AGB « » show 46,8.