What are the reasons for the high risk of Down's family

summary

Every parent hopes to have a healthy and happy baby, but there are more or less small episodes in the process of pregnancy. Fortunately, we live in today's rapid development of science and technology, many problems can be detected and treated as soon as possible. Tang screening is a very important detection method in pregnancy test, but it does not mean that Tang screening's test results are 100% 100% accurate, but if the detection of high-risk, I personally think it is necessary to do amniocentesis.

What are the reasons for the high risk of Down's family

First: I believe that many mothers will encounter the situation of unqualified indicators in the prenatal examination report. No matter how strong the heart is, the mother will fall to the bottom. Some mothers will continue to query information on the Internet to judge the severity. Some mothers may be in a bad mood and can't eat. And Down's screening is indeed one of the most depressing prenatal examination items for mothers. On the one hand, Down's syndrome is terrible; on the other hand, there are many unknowns.

Second: because of the serious mental retardation, Tang's children can't take care of themselves, and carry multiple system complications, which can't be cured all their life, so it brings heavy mental and economic burden to the family. Therefore, it is very necessary to check. However, it should be noted that the examination results of high risk does not mean that the disease.

Third, due to the limited specificity and sensitivity of detection technology, the accuracy of Down's screening is not high. The results of the Tang screening test in the hospital can only show the probability of Down's baby, not that the high-risk baby must have a problem. For example, the risk coefficient of trisomy 21 is 1 / 100, which means that the probability of the mutation of chromosome 21 to produce a congenital fool fetus is 1 / 100. Maybe you are the 1 / 100 with problems, or the 99 / 100 with no problems. Low risk does not mean that the baby must have no problems, Even if the risk factor is 1 / 10000, there is a possibility of one in ten thousand.

matters needing attention

Under normal circumstances, a person has 46 23 pairs of chromosomes. Trisomy 21, 18 and 13 are the 21st, 18th and 13th pairs of chromosomes of the fetus, one more than the normal two, which is called trisomy XX. Trisomy 21 is down syndrome.