Screening for nuchal translucency

In the case of chromosomally abnormal fetuses where there is a risk of physical and mental handicap, the couple may wish to continue the pregnancy or undergo termination. [...]examining for increased nuchal translucency, which is associated with an increased risk for aneuploidy, 2 is an essential component of first trimester ultrasound assessment. Occasionally the nuchal abnormality is so obvious that it can be seen without making a formal measurement. Since increased translucency may also be associated with other chromosomal abnormalities (including trisomy 13 and trisomy 18), cardiac abnormalities, and a number of genetic syndromes, this may create a dilemma for the ultrasound operator if a patient has declined nuchal assessment.