What is nt? What is the main investigation?
Nt examination is simply to scan the thickness of the zona pellucida in the neck of the fetus to screen for fetal chromosomal abnormalities or some heart diseases. There will be some water in the back neck of the fetus at a certain time. Nt examination is to check the thickness of these effusion by B-ultrasound. If it is normal, the result is less than 2.5nm; if it is greater than 3nm, it indicates that the fetus has chromosome abnormality or heart problems. The thicker the transparent band at the back of the neck, the greater the risk.
This test is the first screening test in the early days, and the accuracy rate is over 85%, so doctors will recommend pregnant mothers to do this test.
How many weeks do you usually do this examination?
It is generally recommended that pregnant mothers do this examination at 1 1- 13+6 weeks, because if they do it earlier than 1 1 week, the fetus may be too small to observe at this time, but if they do it more than 14 weeks, the liquid in the zona pellucida may be absorbed by the fetus.
Therefore, if you want to do this test, it is best for pregnant mothers to do it within a specific time.
The NT exam is actually not as mysterious as I thought. Simply put, it is to check a specific position of the fetus with B-ultrasound, so this check also needs the cooperation of the fetus.
What if the fetus doesn't cooperate?
Under normal circumstances, it only takes about ten minutes or even ten minutes for us to do a B-ultrasound, but nt needs the cooperation of the fetus to do the designated position, so if the fetus does not cooperate, it will take more time to check. Pregnant mothers can use some tips to make the fetus obedient.
1. Pat your stomach
If the fetus is not good, the pregnant mother will pat her stomach, communicate with the fetus and cooperate with the doctor to complete the examination as soon as possible.
eat something
Pregnant mothers can also make their babies move by eating, because after eating, the blood sugar will become higher and the fetus will be more excited at this time, so it is easy for doctors to find a suitable position by walking.
Come out for a walk
If the baby is asleep or too lazy, the pregnant mother may wish to go out for a walk, and wait for the baby to pass this sleep cycle or feel refreshed.
But to be honest, the fetus is still very young when doing this examination, and many doctors will have their own methods to make the fetus actively cooperate, so pregnant mothers don't have to worry too much, let the doctors find their own way.
However, during the prenatal examination, pregnant mothers must pay attention to their health. If they are too tired, tell the doctor to stop and have a rest first. If they have abdominal pain, they must tell the doctor in time.
The doctor will take care of the feelings of pregnant women during the examination, so be sure to speak out in time.