Why is Down syndrome screening a critical risk?

After pregnancy, you should go for regular physical examinations. The examinations are not only to ensure physical health, but also to detect some congenital diseases in time, so that you can take precautions from the beginning during pregnancy. The Down syndrome screening examination is an examination that can detect whether there are any congenital defects or congenital diseases, but some people will be told that there is a critical risk when doing this examination. What does this mean?

Is the critical risk of Down syndrome screening a big deal?

Generally speaking, the critical risk of Down syndrome screening is not high. First of all, you need to know what Down syndrome screening is for. Down syndrome screening is to check for chromosomal abnormalities or open neurovascular defects in the baby. It checks for three diseases, including trisomy 18, trisomy 21, and open neural tube defects.

The data reports provided are low risk, high risk, and critical risk. Because Down syndrome screening is a preliminary screening with a detection rate of approximately 60% to 70%, the high risk of Down syndrome screening is only a probability, not a confirmation that requires further examination.

Therefore, for those with critical risk of Down syndrome, further examination is recommended to clarify the diagnosis. For example, non-invasive DNA is recommended. Non-invasive DNA is a further examination of Down syndrome screening. It also checks for fetal chromosomal abnormalities by drawing maternal blood. However, the detection rate of non-invasive DNA is higher than that of Tangshan. Therefore, after the critical risk of Down syndrome screening appears, further examination is recommended.

Is the critical risk in Down syndrome screening serious?

If the test results of Down syndrome screening are at critical risk, it is recommended to further perform non-invasive DNA testing or amniocentesis to determine the final result. Although the general outcome is normal and there is no problem, you should not rely on luck. Clinically, there have been cases where the test results are problematic and the pregnancy needs to be terminated. It is recommended that during pregnancy, because the Down syndrome screening is at critical risk, further non-invasive blood tests or direct amniocentesis must be performed.

If there is a history of genetic disease in the family or the family is elderly, or there has been an abnormal baby born in the past, you can skip the amniocentesis and go directly to amniocentesis. If you just want to test the critical risk in the Down syndrome screening, you can consider a non-invasive DNA test. At present, the country's non-invasive DNA test is still very formal, and the results are still very accurate. Pay attention to rest, keep warm, avoid staying up late, avoid getting anxious and angry, take oral calcium tablets, get enough sun exposure, eat a low-salt, low-sugar, low-fat diet, control your weight, don't let your baby grow too large, and have regular prenatal check-ups.