Women need to undergo many obstetric examinations during pregnancy, and NT examination is a very important item. This examination mainly checks whether the fetus has some congenital abnormalities, such as common genetic diseases, chromosomal abnormalities, Down syndrome, heart disease, etc. So, will the NT value of a fetus with thalassemia be normal?
If the fetus with thalassemia does not have any congenital abnormalities, the nt value will show a normal situation. If the nt value is high, the possibility of suspected Down syndrome will be higher.
The nt value of a typical fetus is within the normal range as long as it does not exceed 3mm. However, if the fetus has a high amount of body fluids, it will to some extent affect the results of the examination. Therefore, when the nt value is high, it cannot be 100% certain that the fetus has a problem. If this situation occurs, the next follow-up visit is needed to confirm the diagnosis.
To ensure the accuracy of the NT test values, women need to undergo this test between 11 and 13 weeks of pregnancy. If it exceeds 14 weeks, the test results will be inaccurate. During the examination, the higher the NT value of the fetus, the higher the risk of developing some abnormal diseases.
If the nt value exceeds 6m, the risk of developing heart disease and Down syndrome is very high. In this case, further non-invasive DNA testing or amniocentesis is needed.
