Is the critical risk of trisomy 21 serious?

There are quite a lot of tests that need to be done during pregnancy, and the tests at different stages of pregnancy are different. In order for the baby to be born healthy, prenatal examinations are indispensable. Trisomy 21 is an important test during pregnancy and should not be missed. Many people may be worried about the critical risk of Trisomy 21 detected. Next, let's discuss whether the critical risk of Trisomy 21 is serious.

Is the risk of Trisomy 21 criticality serious?

The 21-trisomy test is also called the Down syndrome test. Its purpose is to determine the risk of the fetus having Down syndrome by testing the pregnant woman's blood and combining age, weight, weeks of pregnancy, maternal history, etc. The critical risk of 21-trisomy has an expected value and an estimated value for the identification of its overall risk. The general standard for them is: when the risk value is greater than 1:270, it is called high risk; between 1:270 and 1:1000, it is called critical risk. For pregnant women with borderline risk, the risk of their babies suffering from trisomy 21 may be higher.

What is the cause of trisomy 21?

Trisomy 21 is a common sex chromosome genetic disease that most people know about. Some of the high-risk causes of its occurrence are as follows:

1. Pregnant women with family history

In the family, many people have had trisomy 21 syndrome before, at least in three generations of direct blood relatives.

2. Pregnant women with poor maternal history

When having a second or third child, there may be situations where a deformed baby was born in the previous delivery, or even a miscarriage in the early pregnancy that was immediately diagnosed with 21-trisomy syndrome or other unclear reasons.

3. Older pregnant women

We call women over 35 years old older mothers.

If any of the above three conditions occur, there may be a risk of developing some genetic diseases. If this happens, it is best to consult a college doctor at a professional genetic counseling hospital during the pregnancy preparation period or before delivery.

Is the risk of trisomy 21 serious? In fact, this test is not necessarily serious, but if there is this routine physical examination, further examination is needed, such as amniocentesis or minimally invasive examination. The success rate of these two methods will be better, and the growth and development status of the baby can be better understood. If you are an older mother or have a family history, your child is more likely to have trisomy 21, so you need to do more to learn more.