Introduction: Since learning about the arrival of the baby, every parent hopes that the baby can develop healthily and give birth smoothly, and the development of the fetus during pregnancy is a matter that the whole family is concerned about.
Ten months pregnant, pregnant mothers will carefully protect the baby in the abdomen, and attach great importance to pregnancy and obstetric examination. Because through pregnancy examination, doctors can judge the condition of the fetus and pregnant women, intervene at risks as early as possible, and try their best to avoid accidents during pregnancy.
Dan Dan is nearly 3 months pregnant, as a new mother has no experience, she just learned from friends and family who have had childbirth experience that pregnancy and obstetric examination is very important. And the first obstetric examination should be about 3 months of pregnancy, and a mother and child health manual should be established. But her girlfriend told her that there was also an important NT screening in the first trimester, which must not be forgotten.
You can go to the hospital in advance, this test is to rule out fetal malformations, if the time is missed will be very troublesome. Hearing the deformed Dan Dan is a little flustered, is it possible that there may be a problem with the fetus just pregnant, so it should be ruled out. The girlfriend reassured her that the chance of deformity was not great, but in order to be foolproof, this test was indispensable.
The girlfriend has been having a baby for two years, and with her own experience, she roughly told Dan Dan what NT screening is, although she did not fully understand, Dan Dan roughly understood that the key word of NT screening is "early exclusion of malformations", and the examination time is very important. It was almost 12 weeks, and Dan Dan went directly to the hospital with her husband.
The doctor inquired about the gestational week, saying that the NT screening was in the 11th to 14th weeks of pregnancy, and Dan Dan was glad that the girlfriend reminded him in time, otherwise the test results might be wrong one or two weeks late.
Doctors in the first trimester will let NT screening be done, but many pregnant mothers are unfamiliar with this test and will be nervous to hear about the deformity. NT examination is an important 5 aspects, pregnant mothers understand early, do not miss the opportunity of examination, for the initial development of the fetus to control the good pass. The indispensable NT examination in the first trimester needs to understand several aspects, and then we will talk about it together.
1. What is NT screening?
Data show that about 800,000-1.2 million newborns on the mainland are born defective every year, with a probability of 5.6%, which is one of the countries with a relatively high probability of defects in the world.
If developmental defects can be excluded during pregnancy, reasonable measures can also be taken as soon as possible, and NT screening is the first pass to exclude fetal malformations during pregnancy.
NT examination through the color ultrasound to check the thickness of fluid accumulation in the subcutaneous tissue behind the neck of the fetus, to determine whether there is abnormality in chromosomal development and fetal development, NT is an abbreviation in English, Chinese means "neck transparent". If the check value is greater than 3mm, it means that it is abnormal, and it needs to be confirmed by in-depth inspection.
2. The time of NT examination
NT screening is the best time for NT screening at 11 to 14 weeks' gestation, and the fetus is very small before 11 weeks and is difficult to achieve in terms of technical examination.
For more than 14 weeks, accurate test results cannot be obtained because the fetus's developing lymphatic system absorbs subcutaneous fluid.
3. NT screening and examination method
The numerical value of NT screening is 0.1 mm, which requires subtle accuracy and high accuracy requirements for measurement. Not only within a certain period of pregnancy, but also the requirements of the measurement range, the state requirements of the fetal neck during the measurement, etc., so it must be operated by a professional B ultrasound doctor to be as accurate as possible.
4. Why does NT thicken?
When the fetus may have cardiovascular and cerebrovascular or chromosomal malformations, the NT value will increase, which only indicates that it is a high-risk malformation, and further examination is needed to determine.
For example, puncturing the uterus to do an invasive test for amniocentesis, or isolating the blood of the fetus from the blood of a pregnant woman, testing chromosomes for non-invasive tests. In general, the NT thickening of the examination results can be done noninvasive tests to further confirm the results.
5. What should I pay attention to in NT examination?
First of all, the NT examination is grasped well during pregnancy, and there is no need to empty stomach or hold urine through abdominal color ultrasound examination. However, if the NT test is done with other tests that require fasting, it is necessary to keep an empty stomach, and the NT screening alone does not need to be fasted.
Secondly, this examination requires a high degree of fetal cooperation, if the fetal state is not conducive to observation, it will affect the examination results, pregnant mothers need to follow the guidance of the doctor, move to make the fetus active, to achieve the best observation state.
Finally, during the examination process, it is likely that the mother-to-be's abdomen is pressed by the doctor, there is no need to be too nervous, the doctor is using such an external stimulation method to make the fetus move, so that the detection is more accurate. If the NT test is successful, it can be completed in about 10-20 minutes, and if the fetal cooperation is low, it may take some time.
Expectant mothers should also pay attention to calming down their minds, and excessive nervous emotions will also affect the fetus, which is not conducive to the smooth progress of the examination. This just excludes deformities and doesn't have to worry too much about the results.
epilogue:
Many novice mothers-to-be are unfamiliar with NT screening, but it is an early ordeal removal test necessary in the first trimester. Similar to Down's screening, the gestational age requirements for the examination are different, and expectant mothers need to understand the precautions for NT examination early and pay attention to it. When it comes to the pregnancy week, go to the hospital to make an appointment in time, and at the same time adjust the mentality, every examination during the entire pregnancy is very important, remember not to do the examination according to the assumption of being selective.
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