It doesn't matter if you don't do Down's screening during pregnancy. Did everyone do it?

Down's screening is a medical term. For many newly pregnant mothers, most of them don't know what Down's screening is. Because the result of Down's screening is only a possibility and not very accurate, many expectant mothers will hesitate to do Down's screening after learning about Down's screening. On the one hand, worrying about the high risk is just a false alarm, on the other hand, it will bring psychological pressure to expectant mothers, and a series of troubles make many expectant mothers flinch from Down's screening. So, what is Down's screening? When is the right time to do Down's screening? Is it necessary to do Down's screening? Wait for the questions, and Bian Xiao will help you answer them one by one. Let's have a look!

What is Down's Screening?

Generally speaking, Down's screening is a special inspection method, which is made for special people without any diseases, such as all pregnant women.

Down's screening can detect the concentrations of fetal protein A, chorionic gonadotropin and free estriol in the mother by extracting the serum of pregnant women, and then calculate the coefficient of pregnant women giving birth to congenital defects by combining a series of observations such as the expected date of delivery, weight, age and gestational age at the time of serum collection. Its main purpose is to judge whether the fetus born is healthy and defective. What needs to be clear is that Down's screening is not for a certain disease, but for which disease it is more likely.

At present, the screening and diagnosis of Down syndrome, trisomy 18 and congenital neural tube malformation is such a systematic method. First of all, all pregnant women were screened out by screening method for high-risk pregnant women with congenital stupidity and tongue coating dementia, and the next diagnosis and examination were carried out. If the fetus is finally diagnosed as a patient with these congenital diseases, pregnant women can decide whether to continue their pregnancy.

These diseases mentioned above use the same screening method, that is, through your age, weight, AFP and β-HCG levels in venous blood, combined with your other conditions, such as whether you smoke or drink alcohol, calculate the risk value of your fetus suffering from the above three congenital diseases. Depending on the risk value, you will get a positive (high risk) or negative (low risk) result.

The specific method is to take chorionic blood or amniotic fluid for cell culture, and then do chromosome karyotype analysis. If there is a map of 2 1- trisomy syndrome, the fetus can be diagnosed as Down syndrome. 2. The Chinese name of AFP is AFP. For example, both maternal blood and fetal amniotic fluid have elevated AFP, which proves that the fetus has neural tube abnormalities, namely spina bifida, meningocele, anencephaly and hydrocephalus.

When is the right time to do Down's screening?

Through the above understanding of Down's screening, we can see that the pregnancy cycle of Down's screening is also within the calculation range, so when should Down's screening be done properly? Usually, what we call Down's screening is carried out in the second trimester, but in recent years, it is also carried out in the first trimester. Then, the time for Down's screening in the first trimester is eleven to fourteen weeks, and the best time is eleven to twelve weeks. Expectant mothers can go to the hospital for examination according to the time of pregnancy.

Doctors suggest that the time for Down's screening in the second trimester is 15-20 weeks of pregnancy, and the best examination time is between 16- 18 weeks. Because mistakes both before and after will affect the accuracy of Down's screening results. If the hospital report determines that it is a high-risk situation during the screening process, doctors will generally recommend amniocentesis. If a pregnant woman misses the time period of Down's screening, it is impossible to make up the examination. She can only do amniocentesis and take amniotic fluid to determine the Down's baby.

Is it necessary to do Down's screening?

Objection-if you can't accept amniocentesis, don't do Down's screening, so as not to increase the psychological burden.

Mothers in this school believe that the low risk of Down's screening does not mean that children must be healthy. If high risk is detected, amniocentesis is needed for further diagnosis, and amniocentesis may lead to abortion. If the baby is healthy, it will be too painful because of amniotic fluid puncture.

Pro-school-In order to be responsible for children and families, Down's screening is necessary.

The expectant mother in favor believes that amniocentesis is not as risky as the legend and can be examined. When the test results come out, the final result is confirmed, and the hanging heart can also fall to the ground, so that the whole pregnancy will not be suspicious. If you don't do Down's screening, the final fetus is defective, which is painful to your family and yourself, and irresponsible to your child.

Experts say

Experts show that, indeed, the accuracy of Down's screening is not very high. Down's screening is based on maternal blood indicators to infer the fetal situation. The biochemical indexes in maternal blood will be interfered by many factors, and the age of pregnant women is also an interfering factor. The older a woman is, the higher the risk. These factors make it impossible for the results of Down's screening to be very accurate.

However, according to the screening data, among the 65,438+000 cases of Down's children, about 62 cases were diagnosed among pregnant women who were identified as high-risk by Down's screening. Of course, pregnant women who are not at moderate risk and low risk will not give birth to Down's baby. To determine whether it is Down syndrome, high-risk pregnant women need amniocentesis, which is actually not as terrible as imagined. Experts also said that researchers around the world are studying a non-invasive alternative to amniocentesis, so that expectant mothers can get accurate results without worrying about the impact on the fetus.

Bian Xiao suggested.

Down's screening is a screening method to judge whether the fetus is defective, which is very necessary. Whether to do Down's screening or not, it is best for expectant mothers to communicate with their doctors and follow their advice. Especially in the following situations, expectant mothers must do Down's screening.

1, over 35 years old.

I have had abnormal children.

3. Unexplained abortion.

4. Vaginal bleeding during pregnancy.

I have a history of taking medicine in early pregnancy, and I don't know if this medicine has any effect.

6, early pregnancy, contact with harmful substances.

7. The family has a history of birth defects, and the first pregnancy should be screened for Down's syndrome.

Conclusion: At present, Down's screening is a good examination method for Down's syndrome. Before the child is born, it is difficult for everyone to judge the child's wisdom and defects in all aspects. Therefore, with the help of Down's screening, we can well judge whether all aspects of the report exist, which is a responsible attitude towards children and families. Bian Xiao believes that it is necessary to do Down's screening for children's future. After learning about Down's screening, your mother must have something in mind. You can consider whether to do Down's screening!