Although the policy of having a second child has been relaxed, due to pressure and time constraints, most families still only want one baby. So before the baby speaks, the ingredients at home will be very worried about their development and growth. Because various prenatal examinations are conducted during pregnancy to rule out abnormalities. So what is the pregnancy test for NT?
What is the pregnancy test for NT
By examining the thickness of the nuchal translucency of the fetus, early diagnosis of chromosomal disorders and early detection of fetal abnormalities caused by various reasons can be achieved. If the nuchal translucency of the child thickens (NT ≥ 2.5 millimeters is considered abnormal). This indicates that the fetus may have Down syndrome or poor heart development. In addition, thickening of the nuchal translucency is also related to fetal chromosomal karyotype, congenital heart disease, and other structural abnormalities. The thicker the nuchal translucency, the higher the probability of fetal abnormalities. Therefore, NT is one of the very important and necessary examinations during pregnancy.
The optimal time for NT inspection
It is generally believed that measuring NT at 10-14 weeks is better, at which point the head hip length is equivalent to 45-84mm. The thickness of NT can be measured by transabdominal or transvaginal ultrasound, with 98% to 100% measurable at 10-13 weeks and decreasing to 11% at 14 weeks.
During 11-14 weeks of pregnancy, if the fetus has Down syndrome or poor heart development, the nuchal translucency will thicken. The nuchal translucency scan is performed between 11-13 weeks and 6 days of pregnancy because it is technically difficult to scan before 11 weeks because the baby is too young.
After 14 weeks, excessive fluid may be absorbed by the developing lymphatic system of the baby. Thickening of the nuchal translucency is associated with fetal chromosomal karyotype, congenital heart disease, and other structural abnormalities. The thicker the nuchal translucency, the higher the probability of fetal abnormalities.
What is the pregnancy test for NT? The above content has been explained in detail. In fact, NT examination is what we call prenatal screening, but it is the first screening test during pregnancy and childbirth, so this examination is very important. However, the editor would like to remind expectant mothers that it is best to undergo this examination at 11 weeks, as it is beneficial for both you and the fetus.
