Early Predictors of Successful Pregnancy

May, 2009

Successful pregnancy can be predicted with up to 94% accuracy between days 33 and 36 using transvaginal ultrasound to detect 3 markers, according to new findings presented by Dr. Soyoung Bae at the American College of Obstetricians and Gynecologists (ACOG) 57th Annual Clinical Meeting in Chicago, Illinois.

The predictors include ultrasound findings between 33 and 36 days after conception in otherwise healthy women:

• gestational sac at least 12 mm in diameter
• yolk sac with a diameter of 2 to 6 mm
• presence of fetal cardiac activity

Dr. Bae said. "These markers were associated with favorable pregnancy outcome even in the poor prognostic subgroups of women of advanced maternal age and those with recurrent pregnancy loss."

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