Acog guidelines pregnancy dating

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Although guidelines for indicated late-preterm and early-term deliveries depend on accurate determination of gestational age, women with suboptimally dated pregnancies should be managed according to these same guidelines because of the lack of a superior alternative 89. Philadelphia, PA: Expected day of delivery from ultrasound dating versus last menstrual period—obstetric outcome when dates mismatch. A longitudinal biometric assessment from 7 to 12 weeks of gestation. Obstet Gynecol ; Use of this Web site constitutes acceptance of our Terms of Use. SaftlasAnne B.

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Some authors have even suggested that secular increases in PTD rates and concomitant decreases in rates of SGA birth in the United States may largely be a consequence of increased reliance on ultrasound dating in recent decades

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Defining a Suboptimally Dated Pregnancy The American College of Obstetricians and Gynecologists considers first-trimester ultrasonography to be the most accurate method to establish or confirm gestational age 6. Thanks for registering! LMP galast menstrual period gestational age; US gaultrasound gestational age. Reliance on ultrasound dating alone led to an artificially low reported rate of SGA birth and an artificially high rate of PTD 14 These guidelines should not be construed as dictating an exclusive course of treatment or procedure.

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