Pettker, MD; James D. Goldberg, MD; and Yasser Y. This document reflects emerging clinical and scientific advances as of the date issued and is subject to change. The information should not be construed as dictating an exclusive course of treatment or procedure to be followed. Accurate dating of pregnancy is important to improve 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 in the medical record.
Predicting delivery date by ultrasound and last menstrual period in early gestation.
Methods for Estimating the Due Date - ACOG
Dating your Pregnancy The 40 week countdown You can calculate your due date by subtracting three months from the first day of your last menstrual period LMP and then add a week. Use our pregnancy calculator. A pregnancy is based on being days long, which is 40 weeks more like 10 months not 9! When we give you a due date we consider 37 to 42 weeks to be full-term, so even if your baby is born two weeks before your due date it is not considered premature.
Predicting delivery date by ultrasound and last menstrual period in early gestation. Taipale P 1 , Hiilesmaa V. To compare last menstrual period and ultrasonography in predicting delivery date. We used ultrasound to scan 17, nonselected singleton pregnancies at completed weeks. The last menstrual period LMP was considered certain in 13, and uncertain in cases.
Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. Methods This cross-sectional study included consecutive pregnant women receiving antenatal care at two tertiary health institutions in Enugu, Nigeria, from January 1, to March 31, Results The mean age of the women was