What does NTD risk mean?

What does Down syndrome screening NTD mean? Methods such as Down syndrome screening are mainly used to check the physical condition of pregnant women and the growth and development of the fetus. Especially nowadays, the air pollution and radioactive substances caused by many chemical products have led to more and more high-risk cases of Down syndrome screening. So, when should Down syndrome screening be done? What does Down syndrome screening NTD mean?

What does ntd harmfulness mean

NTD is a part of the serological prenatal examination for pregnant women. It is mainly used to check the harmfulness of neural tube defects (including anencephaly, spina bifida, encephaly, and spinal meningocele) in the fetus. It is one of the contents of Down syndrome screening.

Down syndrome screening itself is a prenatal selection and there is no definite result. Just like the probability statistics in data information, the result is only a probability. 1:50 means high risk, and 1:5000 means low risk.

However, low risk does not mean that there is no possibility of fetal abnormalities, and high risk does not mean that there is no doubt that the fetus has problems.

Therefore, pregnant women do not need to worry too much. If n td is high risk, pregnant women need further examination.

What does Down's syndrome screening NTD mean?

The purpose of Down syndrome screening is to select possible Down syndrome babies (also known as trisomy 21 or congenital idiocy) during pregnancy. This type of symptom is the result of chromosomal abnormalities, caused by an abnormal number of chromosomes 21. Every IVF pregnancy has the possibility of causing chromosomal abnormalities in the embryo, including trisomy 21, and the incidence of this disease is relatively high, with the neonatal incidence rate being about 1/700. Its occurrence is accidental and random. There may be no family history or established history of exposure to harmful substances. The incidence rate increases with the age of the pregnant woman.

Down syndrome screening is only a method of identification and evaluation, not a diagnostic test method. If the Down syndrome screening shows a high risk of NTD, then other methods are needed to further confirm the diagnosis. You can choose to have amniocentesis to check whether the child's development is normal.

When is Down syndrome screening done?

The best time to do Down syndrome screening is between 15 and 20 weeks of pregnancy. Doctors recommend that Down syndrome screening should be done at 15 to 20 weeks, but each examination hospital has different conditions, so please listen to the hospital's notification on the specific time of Down syndrome screening. At this stage, the possibility of congenital idiocy can be analyzed based on examination prediction. The important purpose of Down syndrome screening is to avoid the harm of congenital idiocy of the fetus to a certain extent.

Solutions for high-risk Down syndrome screening results:

(1) Further diagnosis

Pregnant mothers whose Down syndrome screening results are "high risk" need to confirm whether the fetus has Down syndrome. Currently, the most common professional examination during pregnancy is amniocentesis, that is, under the correct guidance of B-ultrasound, the needle is inserted into the amniotic fluid of the pregnant woman through the abdomen to obtain the amniotic fluid for chromosome analysis of the fetal germ cells. Amniocentesis is suitable for pregnant women between 16 and 20 weeks of gestation. Some pregnant women or their families may have concerns about the safety of amniocentesis, but according to statistics, the low birth rate caused by this professional procedure is only 0.5%. In addition to amniocentesis, other professional examinations during pregnancy include chorionic villus sampling, fetal umbilical vein puncture, and fetoscopy.

(2) What should I do after my baby is diagnosed with Down syndrome?

There is currently no effective treatment for Down syndrome. The best way is to terminate the pregnancy before the mother gives birth.

The above is a detailed explanation of when pregnant women should do Down syndrome screening. Such examinations must be done. This will give women a good grasp of whether the various development trends of the fetus are normal during pregnancy. This type of examination is also relatively complicated, so pregnant women must actively cooperate.