What items does nt check

NT examination helps us better understand our own health conditions, obtain accurate information through regular hospital examinations, and thus solve health problems as soon as possible. Nothing is more important than our own health. But some people may ask, what are the main items that nt checks? In order to dispel doubts, let me and everyone have a deeper understanding, hoping to dispel the relevant doubts in everyone's mind.

1. Babies with Down syndrome will have water retention in the subcutaneous tissue, so the skin behind the neck will be thicker. If the NT test shows that the thickness of the fetal neck skin exceeds the standard value, it may be related to abnormalities in the fetal chromosomal karyotype and other anatomical abnormalities. The thicker the NT, the greater the chance of fetal anatomical abnormalities and chromosomal abnormalities.

2. In addition to detecting the risk of chromosomal abnormalities, thickening of the fetal nuchal translucency is also related to congenital heart disease.

If the NT test result exceeds the index range, pregnant women are advised to conduct subsequent fetal abnormality screening to further determine the risk of fetal abnormalities so that countermeasures can be taken as soon as possible. This type of screening is mainly done by ultrasound scanning, usually on the expectant mother's abdomen, but it is also necessary to check the position of the baby and uterus. If necessary, it should be done through vaginal B-ultrasound, which can be seen more clearly.

In order to accurately measure the pregnancy, the ultrasound doctor will measure the baby's arm-head diameter and the width of the nuchal translucency. Under B-ultrasound, the baby's skin looks like lines, and the fluid under the skin looks gray-black. In this section, the baby looks very clear, and you can see his head, spine, limbs, hands and feet. Although some major abnormalities may be eliminated in this B-ultrasound, it is still recommended that expectant mothers have a detailed B-ultrasound at 20 weeks.

NT screening should be done at 11-13 weeks and 6 days of pregnancy. The so-called NT screening is to use color Doppler ultrasound to check the thickness of the fetal nuchal translucency layer, which can only be seen clearly during this gestational week. If the thickness of the fetal nuchal translucency is beyond the normal range, it indicates that the fetus is at risk of Down syndrome, and further amniocentesis or hair follicle puncture biopsy is needed. In addition to screening NT, it is also necessary to see whether the size of the fetus is consistent with the actual gestational age, and whether the conditions of the fetal umbilical cord, embryo, and amniotic fluid of the pregnant woman are normal.