Ultrasound manifestations of Down’s babies usually include thickening of the fetal nuchal translucency, mild shortening of the femur, intestinal obstruction, ascites, and short head deformity.
Down’s syndrome, or Down’s syndrome fetus, also known as trisomy 21, is one of the most common chromosomal disorders. Combined screening in early pregnancy includes both ultrasound determination of fetal nuchal translucency thickness and maternal serologic testing. The screening strategy in the second trimester is combined serologic marker screening.
Fetuses with karyotypic abnormalities often have anatomical alterations and malformations, so the abnormalities can be detected by ultrasound; however, abnormal ultrasound markers associated with chromosomal abnormalities are only suggestive of an increased risk for chromosomal aneuploidy anomalies, which can be a variant of a normal fetus or transient, resolving or disappearing by late gestation or at birth, and do not necessarily occur as a sequela.
Ultrasound manifestations of trisomy 21 include thickening of the fetal nuchal translucency, mild shortening of the femur, intestinal obstruction, ascites, and short head deformity. Abnormal ultrasound soft indicators should be noted for the presence of other structural malformations, and the need for further prenatal diagnosis should be determined based on the risk level of the particular soft indicator.
Pregnant women should undergo regular obstetric checkups during pregnancy for necessary prenatal screening and seek prompt medical attention for any abnormalities.