Monday, February 28, 2011

Ultrasound in Pregnancy

Before 14 weeks, ultrasound is use for dating purposes.
Dating becomes inaccurate after 14 weeks.

A fetal abnormality scan is done at 20 weeks. This will pick up deformities such as ancephaly ( absence of skull/brain), cleft lip or club foot ( congenital talipes equinovarus). Polyhydramnios (excessive amniotic fluid) can also be picked up during this stage.

The ultrasound can also measure for nuchal tranluceny from 11 to 14 weeks as a screening test for Down's syndrome.

1 comment:

  1. Anyone know how often Clubfoot is misdiagnosed at the 20 week mark?