No abstract

Objectives Nuchal translucency (NT) screening increases antenatal detection of Down syndrome (DS) compared to maternal age-based screening. We wanted to determine if a change in policy for prenatal diagnosis would result in fewer babies born with DS. Methods

An informational film as additional information to complement written and verbal information about prenatal testing does not appear to increase women's anxiety and worries. However, the informational film may cause worry at the time of viewing which should be taken into consideration.

An informational film does not increase women's knowledge or the number of women making an informed choice about the second trimester ultrasound. Women who did not make an informed choice about the second trimester ultrasound had a lower level of education and less knowledge about second trimester ultrasound screening.

The new web-based software is an effective method for the detection of trisomy 21 with similar performance compared to other programs. However, it needs to be offered to all pregnant women to have an impact on the incidence of Down's syndrome.