Nt value depends on the tricks of boys and girls
1, nt value to see boys and girls tips: how to see men and women during pregnancy through nt, there are still many tests to be done, so many pregnant women feel that it is really troublesome to do prenatal check-ups. Although the prenatal examination is troublesome, it is beneficial to the health of mother and baby. Nt examination is an important examination during pregnancy. Pregnant women are curious about whether they are male or female, so they want to look at it through nt. So, how can nt check men and women?
1, nt Examination Intention Examination Examination of the transparency of the fetal neck is generally used for prenatal screening, which can check whether the chromosome is diseased or has other diseases. Nt examination has nothing to do with the sex of the fetus, and the sex of the fetus can't be seen from the results of nt examination. Please don't care too much about the sex of the fetus, both men and women are your children. Nt single can see the accuracy rate of men and women is 90.
2. However, there is a very close relationship between the transparent layer of the neck and the gestational age. If you want to measure the transparent layer of the neck, * * check the thickness from 10 to 14 weeks of pregnancy. However, in the 10- 14 weeks of pregnancy, the thickness of the transparent layer of the neck will increase slightly with the gestational age. The simplest estimation method is that if the measured value is less than 2.5 mm, it will be judged as normal, while if the measured value is greater than or equal to 2.5 mm, it will be diagnosed as thickening of the transparent layer of the neck. Nt value comparison table of born male treasure.
It doesn't matter whether you are pregnant with a boy or a girl. What matters is the health of the fetus. Both boys and girls are the same now, and there is no need to do the old idea of son preference. Instead of spending time studying the sex of the fetus, it is better to study the knowledge and know more about it, so as to do a good job in health care.
2, nt value to see boys and girls trick: nt how to see the gender of men and women how to see the nt list of fetal gender from NT value.
The zona pellucida behind the neck usually grows with the growth of the fetus, and gradually disappears after 14 weeks of pregnancy. In China, doctors consider that the zona pellucida behind the neck is more than 3mm. Due to different individual conditions, some normal fetuses also have more body fluids, which is easy to affect the measurement results. If the zona pellucida behind the neck is thick, it doesn't mean that there must be something wrong with the fetus.
If the NT value is close to 3mm, pregnant women can consult their doctors and decide whether to carry out further examination to determine the risk of the disease. Generally speaking, the thicker the zona pellucida behind the neck, the higher the risk of fetal abnormality. If the thickness has reached 6mm, there is a high risk of Down's syndrome, other chromosomes, genetic syndrome and heart problems. At this time, it is suggested to carry out follow-up risk investigation, make clear the condition as soon as possible and make countermeasures.
The NT value exceeds the normal range, which may be related to the following points: The three bright spots of NT are boys and girls.
1 During normal embryonic development, the cervical lymphatic vessels communicate with the jugular sinus in about 1 1- 14 weeks. Before communication, a small amount of lymph accumulated in the neck to form temporary NT thickening. Normal fetus should subside after 14 weeks. If the communication between the cervical lymphatic vessels and the cervical venous sinus is delayed, there will be obvious cervical lymphatic reflux disorder, excessive lymph will accumulate in the neck, NT will thicken obviously, and even it will develop into lymphatic hydrocele in the second trimester.
2. Fetuses with normal karyotype often have NT thickening with congenital heart malformation, which may be related to heart failure. When heart failure occurs, venous reflux disorder leads to the increase of jugular vein pressure, the obstruction of lymph reflux in lymphatic vessels, and excessive lymph accumulation in the neck, forming NT thickening.
Nt, what are the tricks for boys and girls? 3. The extracellular transparent matrix of fetal neck skin with Down syndrome increased, and extracellular fluid was absorbed in the interval of transparent matrix, which made the neck skin spongy and formed NT thickening.
4. Congenital diaphragmatic hernia, the pressure in the chest cavity is increased due to the hernia of abdominal contents into the chest cavity, the space occupying lesion in one side of the lung, the displacement of the mediastinum and the obstruction of venous return due to the increase of the volume of the lung on this side, the extremely narrow chest cavity with fatal skeletal malformation and the increase of pressure in the chest cavity can all hinder venous return and venous congestion. When venous blood flows back to the neck and head, NT thickens.
Although NT examination uses B-ultrasound to observe the fetal condition, the focus of NT examination and observation is to observe the thickness of the transparent zone behind the neck, and it is necessary for doctors to illuminate the genitals of the fetus with ultrasonic instruments to judge the birth of boys and girls, so it is impossible to judge the sex of the fetus only through NT examination.
How to do NT check
The pregnant women with 1 1- 14 weeks of pregnancy were examined by * * ultrasound to measure the thickness of fetal neck zona pellucida. How to do NT check? 12 weeks nt male treasure characteristics.
1, ultrasound examination, first of all, the fetal head-buttock length (CRL) and biparietal diameter were measured to determine the ultrasound gestational age, and then the fetal structure was examined in sequence, and some important indicators were observed, such as fetal heart rate, fetal movement, umbilical cord and fetal link, fetal limb development, intracranial choroid plexus, etc., to exclude fetal abnormalities such as anencephaly, choroid plexus cyst, umbilical hernia and other developmental abnormalities.
2. The thickness of the cervical zona pellucida was measured on the sagittal section of the fetal long axis, and the fetal head was in a straight line with the spine. The magnification is adjusted to about 3/4 of the screen size of the fetal body. The measuring point is placed on the inner edge of two hyperechoic lines, which represent the skin echo and the soft tissue echo on the spinal surface respectively, and the part between them is the zona pellucida of the neck.
3. Take the sagittal section of the fetal long axis, and the carcass is in a natural flexion position, and measure the thickest part of the anechoic transparent layer under the skin of the fetal neck, from the inner edge of the skin layer to the outer edge of the fascia layer, and measure it for 3 times to get the thickest value.
4. If the thickness of the zona pellucida of the fetal neck is measured to be ≥3mm (or ≥2.5mm and the number of weeks of pregnancy calculated according to the length of the fetal head and buttocks is < 12 weeks), it is suggested that pregnant women receive amniotic fluid or chorionic villus puncture examination for fetal karyotype analysis.
The above is related to how to look at men and women through nt, and it is about how to look at the sharing between men and women through nt. After reading the nt value to see the tricks of boys and girls, I hope this will help everyone!