Down syndrome is an occasional disease, and every pregnant woman may give birth to a Down syndrome child. The risk of developing Down syndrome increases with the age of pregnant women. During pregnancy, it is important to pay attention to screening. If a pregnant woman has not passed the Tang screening, should she undergo non-invasive or sheep puncture?
If a pregnant woman fails the Tang screening, further amniocentesis examination is required. Despite progress in Down syndrome screening, amniocentesis is irreplaceable. So once high-risk results are obtained, amniocentesis is still necessary to obtain the final conclusion.
Amniotic fluid aspiration is currently a gold standard for pregnancy diagnosis, and non-invasive testing cannot replace amniocentesis. If chromosomal abnormalities are detected during amniocentesis, induction of labor and termination of pregnancy may be necessary. If the result of Tang screening is critical, it can be temporarily left untreated, or further non-invasive DNA testing of the fetus can be performed, and the decision to perform amniocentesis can be made based on the specific results.
Many expectant mothers are concerned that the method of puncture is invasive and may affect the fetus. In fact, amniocentesis is a commonly used invasive prenatal examination, and over 95% of amniocentesis procedures are safe. Although there are certain risks, such as about 2% of pregnant women experiencing mild vaginal bleeding, uterine contractions, etc., only by determining whether the disease is present can targeted treatment and adjustment be carried out.
