the first ultrasound is done in pregnancy, to confirm pregnancy dating and assess for congenital malformations at 11 weeks - 13 weeks 6 days gestation.
the first ultrasound is done in pregnancy, to confirm pregnancy dating and assess for congenital malformations at 11 weeks - 13 weeks 6 days gestation.
when is the first ultrasound done in pregnancy, to confirm pregnancy dating and assess for congenital malformations?
11 weeks - 13 weeks 6 days gestation
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the international society of ultrasound in obstetrics and gynecology (isuog) recommends that pregnant women have routine obstetric ultrasounds between 18 weeks' and 22 weeks' gestational age (the anatomy scan) in order to confirm pregnancy timing, to measure the fetus so that growth abnormalities can be recognized quickly later in pregnancy, and to assess for congenital malformations and multiple pregnancies (twins, etc). additionally, the isuog recommends that pregnant women have obstetric ultrasounds between 11 weeks' and 13 weeks 6 days' gestational age in countries with resources to perform them (the nucal scan). performing an ultrasound at this early stage of pregnancy can more accurately confirm the timing of the pregnancy and can also assess for multiple fetuses and major congenital abnormalities at an earlier stage. research shows that routine obstetric ultrasound before 24 weeks' gestational age can significantly reduce the risk of failing to recognize multiple gestations and can improve pregnancy dating to reduce the risk of labor induction for post-dates pregnancy. there is no difference, however, in perinatal death or poor outcomes for babies.
obstetric ultrasonography