It is necessary to conduct routine fetal examinations and screening for certain diseases during pregnancy. NT examination is usually performed around 11 to 14 weeks after pregnancy, and can determine whether the fetal heart rate and limb development are within normal range, in order to determine whether to continue the pregnancy and rule out the risk of various diseases. So what is a birth canal examination? Let's all learn about it together!
Birth canal examination (NT) refers to the ultrasound examination of the vagina to determine whether the fetus has Down syndrome. It is a method of evaluating the health of a fetus by measuring the thickness of the skin in the transparent layer of the neck. If NT values are found to be outside the normal range during the examination, teratogenic tests such as amniocentesis or chorionic villi biopsy are required to clarify the pathology. The high NT value is not only related to chromosomal abnormalities, but also to congenital heart disease in fetuses, which is a major factor leading to abnormal test results.
In addition, the examination items carried out at each stage of pregnancy have certain clinical significance, and should not be neglected to cause abnormalities in the development of the baby in the belly. When a baby is born and unable to take care of themselves or requires huge surgical expenses to restore their normal life, it is not worth the loss. It is a catastrophic pressure for both the family and the baby.
