Pregnancy is a big event for every family. Every family hopes to have a healthy and smart baby. But in many cases, the results and expectations will be different. For example, some pregnant women give birth to children with physical deformities or mental deficits. In order to prevent pregnant women from giving birth to deformed or stupid babies, the author reminds pregnant women that they must do a birth check, especially an NT check.
NT check is one of the check items that women need to do during pregnancy, but for most pregnant women, when it comes to NT check, they are not very familiar. NT examination is also known as zona pellucida scan, and its thickening is related to Down syndrome, Turner syndrome and other chromosomal abnormalities. Doctors generally combine NT values with early serological examinations to assess the risk of fetal Down’s syndrome. In addition, many people will ask what kind of examination is NT examination, what is the main examination, and why do pregnant women need NT examination? Following these questions, the author will take you to understand in detail what an NT examination is, and why pregnant women need an NT examination.
What is NT check
NT, the full name in English is Nuchal Translucency, and the Chinese name is “translucency behind fetal neck”. It is the subcutaneous effusion at the back of the fetal neck observed by ultrasound at 10 to 13 weeks of pregnancy. NT is a screening indicator for fetal malformations in early pregnancy, and it is also used to assess the risk of early fetal Down syndrome.
Generally speaking, fetuses with Down syndrome are prone to subcutaneous water accumulation, so the skin layer on the back of the fetus is mostly thicker. If the thickness of the fetal neck skin is found to exceed the standard value through the NT examination, then It is very likely to be related to the abnormal karyotype of the fetus or other structural abnormalities. At the same time, the thicker the NT, the greater the possibility of causing fetal structural abnormalities and chromosomal abnormalities.
In addition to the detection of chromosomal abnormalities in the fetus, NT examination is mostly related to congenital heart disease. If the result of the NT check is not within the range of the standard value, it is recommended that the pregnant woman do a follow-up malformation check to further confirm whether the fetus is abnormal, so that countermeasures can be taken as soon as possible.
NT examination is mainly carried out by ultrasound, usually abdominal ultrasound. If necessary, it can also be examined by vaginal ultrasound. The imaging of vaginal ultrasound is more clear.
The need for NT inspection
It is very necessary for pregnant women to undergo NT examination in the first trimester. The main purpose is to diagnose the chromosomal disease of the fetus in the first trimester, and to find the fetal malformations or developmental abnormalities caused by various reasons.
First, a pregnant woman’s NT examination in the first trimester is responsible for herself, her family, or her future child. Issues such as environmental pollution, food safety, and social pressure are the main reasons for the production of high-risk children. Faced with these problems, in order to confirm the health of the fetus, pregnant women can only do a few more tests. NT examination is an important method to judge whether the fetus has congenital malformations or mental retardation.
Second, through NT examination, doctors can not only judge whether the fetus has malformations or intellectual disability, but also check whether the fetus has other types of diseases.
Third, Down syndrome is a sudden disease. Any pregnant woman has the possibility of giving birth to a “Down’s child”. At the same time, as the age of the pregnant woman increases, the probability of giving birth to a Down’s child increases greatly. Therefore, it is necessary for every pregnant woman to have an NT check. NT examination is one of the most economical and simplest non-invasive testing methods. It can screen out high-risk children with Down syndrome as early as possible, which is conducive to further confirming the diagnosis and can minimize the birth rate of Down syndrome.
This article mainly introduces what is the NT check, what is the main check, and whether it is necessary to do the NT check for the maternity checkup of pregnant women. I hope the analysis and answers in this article can help you.