ISSN NO.    2320 - 7418

FRI, APRIL 21 2017 | 4:17:52 PM
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Ultrasonographic Bi- Parietal Diameter (BPD) Measurements VS Regular Last Menstrual Period (LMP) In Estimating the Day of Delivery (EDD) At ALTAWLID University Hospital

Hammami Hisham Al, Mhd Alsharif Nezar*, Fawaz Yaser

Department of obstetrics and gynecology, Syrian private university. Damascus, Syrian Arab Republic


To compare between regular last menstrual period (LMP) and ultrasonography Bi-Parietal Diameter (BPD) measurements in predicting delivery dates(EDD) in a Syrian population. This was a prospective observational study of women with a normal spontaneously conceived viable singleton pregnancy, a regular menstrual cycles, and spontaneous onset of labor at term. The LMP was considered certain in all cases. We used ultrasound to scan 678 fetuses (678 Healthy women) at 13 – 413 weeks. The BPD of each fetus was measured three times, the mean of which was used to derive the best-fit regression model for estimation of gestational age in relation to BPD. Data were collected prospectively and used for statistical analysis. The duration of pregnancy from the scan to the day of spontaneous delivery was predicted by BPD using regression model. The accuracy of each method in predicting the day of delivery was determined. The true delivery dates were compared with estimates based on LMP and BPD. In spite of LMP was more accurate in predicting the delivery date than BPD measurements, but in women who forget the exact LMP, we can rely on BPD measurements, because the differences were of little importance clinically.


Syrian women, last menstrual period (LMP), Bi Parietal Diameter (BPD), expected date of delivery (EDD), ultrasound.

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