Increased Nuchal Fold (NF) at 20 weeks
What is the problem?
During your ultrasound examination today we found that your baby has an increased nuchal fold. All babies have a small pad of tissue at the back of the neck; this is called the nuchal fold (NF).
The nuchal fold normally measures less than 6mm at 20 weeks.
What does this mean?
It can be a normal variation or associated with extra fluid in the skin (oedema) which may be due to an infection or a chromosomal condition such as Downs’s syndrome (Trisomy 21). .
What happens next?
You will be offered the opportunity to discuss these findings with a fetal medicine midwife.
A blood test can be arranged to exclude infection as the cause. You may wish to know for certain whether your baby has a chromosomal problem and this would involve an invasive test such as an amniocentesis or chorionic villus sampling. This test carries a small risk of miscarriage (occurs in about 1 in 100) and, therefore, for some couples this decision can be very difficult.
You will also be offered a scan in fetal medicine department with a fetal medicine consultant to discuss this further.
For further details contact the fetal medicine midwives on 01223 216185 or 01223 245151.
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Cambridge University Hospitals
NHS Foundation Trust
Hills Road, Cambridge
Telephone +44 (0)1223 245151