Is it OK not to do a tang sieve during pregnancy? What is the role of the Tang sieve?

Down screening is recommended because it primarily screens children with Down syndrome, including trisomy 18, trisomy 21, and trisomy 13. It also has a screening effect on fetuses with open neural tube defects.

<> it is mainly between 16-20 weeks of pregnancy, extracting the content of human chorionic gonadotropin No. 1 estriol and alpha-fetoprotein in the peripheral blood of pregnant women, combined with the weight, age, and gestational age of pregnant women to evaluate the risk of sugar screening, it is a risk**, it is non-invasive for pregnant women, so it is recommended to do Tang screening during pregnancy. Down's screening is mainly to detect whether the fetus has chromosome 21-3 abnormalities, which is commonly known as congenital stupidity, and it is best to do Down's examination if the financial conditions allow. In general, between 11-14 weeks of pregnancy, early tang screening can be done, that is, the NT value of the fetus can be measured.

If the NT value is exceeded, it means that the fetus is more likely to be a Down's baby, so it is necessary to do a mid-term Tang screening.

Intermediate screening for Down syndrome can be done between 14 and 17 weeks of gestation, and if there are still problems, further DNA testing is required. In general hospitals, doctors will recommend that pregnant women have high-risk factors during pregnancy. If you have no family history, are in good health, and are not polluted by the surrounding environment during pregnancy, you can consider not doing it.

This inspection is not mandatory. Even a false positive can be confirmed by further testing. It is recommended that pregnant women of appropriate age perform the test in a low-cost and high-sensitivity manner.

You can't give birth to a deformed child just because you don't have such a simple test.

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It's best to get screened for Down syndrome during pregnancy. Screening for Down syndrome can lead to eugenics and exclude fetuses with congenital genetic defects. Down's screening can rule out trisomy 21 or trisomy 18, and if there is a problem with the fetus, the pregnancy can be terminated in time to avoid the birth of an unhealthy fetus.

The deformity rate is not very high now, but for the sake of eugenics, it is better to check it. Down's screening has medium and high risk, and also requires non-invasive DNA testing, with the accuracy rate of Down's screening being only 65% and non-invasive DNA testing being up to 99%. There is also a risk of doing a non-invasive DNA test, which requires an amniocentesis test, which is more accurate.

No; It is necessary to pass a laboratory test to rule out Down's syndrome, and the key is to extract the pregnant amniotic fluid test of the fetal baby to test the concentration of fetal protein and chorionic gonadotropin in the blood cells of the pregnant mother.

During pregnancy, it is recommended to do a Tang screen, the purpose of which is to detect children with Down syndrome, preferably directly at 16 to 18 weeks.

It is very necessary. Tang screening is mainly to screen the fetus with Down syndrome, which can avoid the delivery of deformed babies early, and it is free to do Tang screening.

It is very necessary to know whether the fetus has Down syndrome until a Tang screening test is done. Down screen is short for Down syndrome screening, which is a condition caused by a chromosomal abnormality.

It is still very necessary to do it, and it is good for the child, if you don't do it, there may be some other problems, which are not detected, and it is also a trouble after giving birth, that is, by checking the amniotic fluid to see if there are chromosomal abnormalities, and it will also see if the child has intellectual defects or physical defects.

It is necessary to refer to a more important examination, and through this examination, you can ensure the normal chromosomal condition of the fetus, and it can also ensure the normal growth of the fetus.

It is necessary to do a Tang sieve, which can also better monitor the baby's development and whether there are malformations.

Because some mothers feel that the accuracy of Tang Sieve is too low to be completely diagnosed, and some mothers will panic when doing Tang Sieving, and some mothers think that they are pregnant with twins, so there is no need to do it; If you don't do Tang screening, it is very likely that your child will suffer from trisomy 21, which will cause serious physical defects at birth, which will affect the development of intelligence, or the development of growth and growth.

Because some mothers are relatively nervous, and the accuracy rate is relatively low, they cannot be diagnosed, and there are many factors that affect the examination results, causing unnecessary panic; If you don't do Tang Sieving, if you come out with a sugar baby, it will be a heavy burden for a family.

Because many pregnant mothers feel that it is too expensive to do Tang Sieving, the children who may be born without Tang Sieve will have genetic diseases, and it will cost a lot of money at that time.

After pregnancy, pregnant mothers need to do a lot of tests, blood drawing, B-ultrasound, four-dimensional color ultrasound, Down's screening ......Among them, Down screening is a very important prenatal examination, but many pregnant mothers are reluctant to do Down screening in their lives. Why? Let's take a look!

Many pregnant women are reluctant to have a Down syndrome screening, which may be related to the accuracy of the Down syndrome screening. Compared with non-invasive DNA and amniocentesis, the accuracy of Down's screening is lower and the false positive rate is higher, which is easy to cause psychological burden on pregnant women and lead to excessive mental stress. In addition, for high-risk pregnant women such as elderly pregnant women, the accuracy rate of Down screening is low, and it is generally recommended to do non-invasive DNA or amniocentesis as much as possible.

Therefore, for women who have fertility requirements after pregnancy, because the cost of Down screening is relatively low and the operation is simple, there is no trauma to pregnant women. For pregnant women who do not have any high-risk factors, it is recommended to do Down screening in the second trimester to check whether the fetus has chromosomal abnormalities. Noninvasive DNA and amniocentesis** are not the first choice for routine testing because they are expensive and risky.

The accuracy rate of Down screening is only 65-75%, and the false-positive rate is 5-7%, which means that the fetus cannot be confirmed regardless of the test result. It may be that the value of the Tang Chu screening test is too high. After doing other tests in fear, everything is normal and the baby is healthy after birth.

Therefore, because there is no way to confirm the diagnosis, and the cost of this test is relatively high, it generally only takes about 600 yuan to do it once. Generally, pregnant mothers will choose not to do this expensive and inaccurate test. Because the result is a low-risk empty joy, and the high-risk one is more worried, it is better to do amniocentesis directly.

Although older pregnant women over the age of 35 are strongly associated with Down syndrome, fetuses with Down syndrome are not limited to advanced maternal age. The older you are, the more likely you are to develop Down syndrome. But young women can also give birth to children with Down syndrome, with only 20 percent of Down syndrome occurring in older pregnant women, while the other 80 percent of babies with Down syndrome are born to young pregnant women under the age of 35.

Therefore, testing only older pregnant women is not a good way to prevent Down syndrome.

This is due to the fact that the tang sieve will cause some damage to one's body, and doing the tang sieve is a very painful process. The reason is that when I do the Down syndrome screening, my body will be very painful, and I will be very uncomfortable, and I will feel very nauseous.

This is because many pregnant women feel that the results made by Tang Sieve are not very accurate, but will make them scared, and some pregnant women feel that even if there is a problem with the decision, they have no way to change it, so it is better not to do it.

Some of them are due to economic reasons, and the economic pressure is relatively high, so they are reluctant to do this kind of inspection.

It may be due to fear or lack of money, which leads to many reasons.

What is called Down syndrome screening, this one is actually very simple, it is a woman when you are pregnant to detect whether the baby in your belly has trisomy 21. Maybe everyone is a little unfamiliar with this name, I don't know what it is, this is actually the risk rate of Down syndrome, that is to say, look at the baby in your belly to see if there is a risk of this disease, let go of our pregnancy now, basically all mothers will do such a test, of course, there are a few unwilling to do it, the reason is actually very simple, it is nothing more than fear of spending money, or feel that such a test has no effect. <>

I don't think such a sentence is right, it doesn't say that most pregnant women are unwilling to do Tang Sieve now, but a small number of people are unwilling to do it, and the vast majority of people are still willing to do it. Because you must know that this is for your own insurance, this is for the baby in your belly has a protection, in case a child has a problem, it may ruin a whole family, including you and the child's life, so now in fact, most people are more open-minded, they are willing to do this examination, but they hope that they can give birth to a healthy and lovely baby, do not want him to have a problem. <>

There are actually several kinds of people who are unwilling to do it, one is because he thinks it is completely unnecessary, they don't know about these things at all, and always feel that the hospital is cheating on his money, especially some mothers-in-law or husbands, they will feel that this is a waste of money, they haven't done it before, and they haven't all come over, and then they don't let the mother do it. Those mothers are not firm enough, and they have no money themselves, and it is not what their husbands say. But anyone who has a little thought, a little financial ability, will choose to do it, because this is your own baby, so you have to be responsible for him.

Down Syndrome Screening is an abbreviation for Down Syndrome Prenatal Screening Test. This test takes a sample of the mother's serum to see if the baby has a birth defect. A lot of users are reluctant to do it because he will go through the early and middle stages.

What is Down Syndrome Screening? Why are most pregnant women now reluctant to do Tang screening? Tang screening is also called Tang screening, which is a screening that pregnant women must do in the early and second trimester of pregnancy, mainly to screen for fetal chromosomal abnormalities and fetal neural tube defects.

The results of the Tang sieve are not entirely accurate.

This is a test for a disease, and many pregnant women are reluctant to undergo it because of the dangers of this test.

In general, Down syndrome screening is done between 15 and 20 to 6 weeks of pregnancy, that is, at 3 and a half months of pregnancy to around 5 months. Down's screening is done by extracting blood cells from pregnant women to test for three types of growth hormones, fusing the age, weight, and gestational age of the pregnant woman to distinguish the probability of the baby suffering from chromosomal variation. Down's screening is a screening method, not a diagnosis, and the results of the examination are the identification of risk values, with low risk, borderline risk and high risk.

Low risk means that the probability of chromosomal mutation in the baby is relatively low, but it cannot be completely eliminated and must be rechecked regularly.

3 and a half to 4 and a half months of pregnancy, during which it is relatively appropriate to carry out Down syndrome screening, that is, between 15 and 18 weeks of pregnancy. It should not exceed 20 weeks of pregnancy at the latest, and the older the gestational age, the lower the relative accuracy of Down screening. Down's screening is a general term for the selection of Down syndrome before delivery, the purpose of which is to check the concentration of protein, chorionic gonadotropin and free estriol in the serum protein of pregnant mothers according to the blood night of pregnant women, and integrate the age, weight, gestational age and other aspects of the pregnant woman to distinguish whether the fetus is suffering from Down syndrome and neural tube defects.

In the first trimester, the risk of Down syndrome in the fetus is assessed by ultrasound nuchal translucency (NT) and nasal bridge bone examination, combined with the maternal serum human chorionic gonadotropin (HCG) and pregnancy-related protein A. In the second trimester of pregnancy, the key measures of Down syndrome screening are high alpha-fetoprotein (AFP), human chorionic gonadotropin (HCG), free estriol (UE3), and inhibin A levels in the blood of pregnant women, and it is <> to distinguish the risk of the fetus suffering from Down syndrome

If the Down syndrome screening data shows that the fetus has a high risk factor for Down syndrome, a further diagnostic test - amniocentesis - fetal chromosomes should be examined. Tang screening is not exclusive to advanced maternal age, and young women may also be pregnant with Down syndrome。At the age of 35 years old, it is recommended that non-invasive DNA test or amniocentesis test replace the mid-term Tang screening, and those who are 35 years old and have a high risk of Down syndrome (such as a history of pregnancy and childbirth of a Down baby, excessive obesity, etc.) should have an amniocentesis examination immediately.

In the third trimester of pregnancy, it is necessary to do a Tang screen, and the function of the Tang screen is to rule out a disease, which is Down syndrome, which is very serious.

Typically, it can be done at 9-13 weeks of age. The mid-term Tang Sieve is performed around 15-20 weeks. The main function of Tang Sieve is to exclude the birth of Down children.