What is a single umbilical artery?
A normal umbilical cord contains one vein and two arteries, carrying blood and oxygen to the fetus and waste products away from the fetus. In some pregnancies, the umbilical cord has only one artery instead of the usual two (photos). Single umbilical artery (SUA) is found in about 1% of single fetus pregnancies and aobut 5% of multiples… more »