nt normal probability of conceiving a baby with Down syndrome

The NT examination belongs to a type of B-ultrasound examination. Many pregnant women go to the hospital for a NT examination when they are about 13 weeks pregnant. When the NT examination results are normal, the pregnant women are relieved. Everyone is familiar with Down syndrome, but no pregnant woman wishes her child to be one with Down syndrome. So what is the probability of having a normal nt and having a Down syndrome child?

If the results of the NT examination for pregnant women are normal, the probability of having a baby with Down syndrome will be reduced a lot, reaching 60%-70%. However, this result cannot be used to make a final diagnosis. If you want to make an accurate diagnosis, you need to wait until a certain month to do Down syndrome screening. Down syndrome screening can allow pregnant women to understand the condition of the fetus more clearly, and can also effectively check the probability of the fetus having Down syndrome.

Pregnant women need to pay special attention to the time of the NT test. It is best to go to the hospital for a physical examination between thirteen and fourteen weeks. If the examination is too early or too late, it will affect the results of the NT test. Therefore, pregnant women must remember this time. If they do not do the examination, they will not be clear about the baby's development status, and pregnant women must make some preparations in advance.

Pregnant women should try to maintain a happy mood when doing NT examination, remember not to stay up late, must pay attention to rest, to ensure the body's physical and mental health, so that the test results will be more accurate. The purpose of the NT test is to check the fetal nuchal translucency. Through this test, it can be determined whether the fetal sex chromosomes are abnormal.