What is NT?

When many pregnant mothers are pregnant for three months, doctors will ask for fetal nt color ultrasound. When they hear these two letters, they feel very high-end, but when they think about it carefully, they don't know what it is. Then, let's take a look at the ultrasound doctor to solve the mystery for you and thoroughly understand the first abnormal examination during pregnancy!

1 What is it? What does NT mean?

The English full name of NT: neck al translucent Scan, which is the abbreviation of nuchal translucency scan, refers to the thickness of liquid accumulation in the subcutaneous tissue behind the fetal neck, which is caused by the imperfect development of the baby's lymphatic system and the accumulation of lymph. Experienced ultrasound doctors can accurately measure this thickness, which is NT.

The following is a standard NT measurement chart:

2. Why check nt?

NT is a new technique for early screening of fetal malformations caused by chromosomal mutation's malformation or other reasons, and it is also related to cardiovascular malformations, nervous system malformations and developmental retardation in children. It can be said that this is the most sensitive, effective, economical and specific inspection method. If NT is greater than 2.5mm, the prevalence of the above diseases will increase.

3. When? Don't do it?

Pregnancy is 1 1 thoughtful 13+6 weeks. It is suggested that the best gestational age is about 12- 13 weeks. If you don't remember your gestational age, you can judge the gestational age according to the measurement of hip length. NT can be done when the hip is 4.5-8.5cm long, and at this time, pregnant mothers can also see the baby in the uterus through three-dimensional color Doppler ultrasound. Isn't it interesting?

4. What should I do if 4? NT thickens?

When NT exceeds 2.5mm, the probability of fetal abnormality will increase. Generally speaking, the thicker the NT, the greater the risk of chromosome abnormality. Once it exceeds the normal value, it is necessary to suggest amniocentesis for prenatal diagnosis. Yichang Maternal and Child Health Hospital is the earliest hospital with prenatal diagnosis qualification in Yichang.

5. NT screening in early pregnancy

What structures can I check?

In the first trimester, besides NT measurement and head-hip length measurement, we can also observe intracranial structures (such as brain midline and choroid plexus), orbit, nasal bone, spine, gastric vesicle, general heart structure, limbs, umbilical cord and placenta.

6. What structural abnormalities can NT detect in early pregnancy?

NT thickening, cervical lymphangiocystic tumor, intracranial structural abnormality such as whole brain, nasal bone loss, obvious spinal abnormality, abdominal fissure, omphalocele, serious cardiac abnormality, limb structural abnormality, etc.

7. Is the fetus with normal 7.NT necessarily healthy?

Many mothers think that NT can detect all malformations, but it is not. It is just an effective screening method, which can detect fetal abnormalities at an early stage. When the NT value is normal, it cannot be said that there is no problem at all. It is often necessary to confirm some structural deformities when examining large row deformities.

8. Do you need special preparation to be NT? Do you need to fast and urinate?

Being NT requires no special preparation, no fasting or holding your urine. You can keep a happy mood and wear loose and comfortable clothes.

9. Do you want to exercise more and climb the stairs before the inspection?

There is no need to exercise more for examination, especially for pregnant women with high risk factors. Being NT requires a higher posture for the baby. Some babies are very cooperative and can succeed once. We will give the baby with bad posture enough patience and time. You can bring your own high-calorie foods such as desserts.

10. Can all hospitals do NT?

NT inspection requires high technology and equipment, and requires the inspector to have prenatal diagnosis qualification, so that high-precision color Doppler measurement can be accurate.

The ultrasound department of Yichang Maternal and Child Health Hospital has several imported special color Doppler ultrasound machines (GE-E6, GE-E8, GE-E 10) which can perform nt screening in early pregnancy, systematic screening in mid-pregnancy and three-dimensional and four-dimensional examination in mid-pregnancy. We have a professional team, and all doctors have undergone rigorous systematic study and obtained screening qualifications.