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Berghella V, et al., Does transvaginal sonographic measurement of cervical length before 14 weeks predict preterm delivery in high-risk pregnancies?

American College of Obstetricians and Gynecologists.

Doppler Ultrasonography The fetal heart can be heard using Doppler ultrasound by 10 to 12 weeks in most patients [10]. Savitz DA, Terry JW Jr, Dole N, Thorp JM Jr, Siega-Riz AM, Herring AH.

The American College of Obstetricians and Gynecologists.

The provided date of birth will help your friends to find you and let us improve your news recommendations.

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Clinical management guidelines for obstetrician-gynecologists.

Number 4, May 1999 (replaces educational bulletin Number 147, October 1990).

The American College of Obstetricians and Gynecologists recommends that ultrasound-established dates should take preference over menstrual dates when the discrepancy between ultrasound dating and LMP is "Because of the risk of redating a small fetus that may be growth restricted, management decisions based on third-trimester ultrasonography alone are especially problematic; they need to be guided by careful consideration of the entire clinical picture and may require closer surveillance, including repeat ultrasonography to ensure appropriate interval growth." [24]. Birth weight from pregnancies dated by ultrasonography in a multicultural British population.