How long does it take for one person to do it?

NT is a relatively important test for early abnormality screening. Therefore, many people worry that this test will take a long time and they will have to wait for a long time. Therefore, they want to understand the time of this test first. In this case, how long does it take for one person to do NT?

How long does nt work alone?

Since this test requires queuing, it may be delayed for some time due to the fetus. Therefore, the hospital will allocate the number of NT tests every day. You only need to queue up at the hospital and sign in every day. If the fetus cooperates, then this test may only take more than ten minutes. Otherwise, it may take an hour or even longer. Therefore, it is recommended to consider the time required for the NT test based on the specific situation.

Do I need to prepare for the NT test?

In fact, this examination does not require fasting or holding urine. However, if the fetus in the abdomen does not cooperate during the examination, the examination may not be carried out smoothly. At this time, the pregnant woman needs to walk to adjust the position of the fetus before the examination. Of course, in some cases the doctor may press the pregnant woman's abdomen, even with great force. At this time, the pregnant mother does not need to panic too much, because the doctor will control the extent of the pressure.

Why can NT test reflect abnormalities in the fetus' genetic information?

1. Before the lymphatic system of a normal fetus is established, a small amount of tissue fluid will accumulate in the neck lymphatic vessels, forming the nuchal translucency (NT). After 14 weeks, as the fetus's lymphatic system develops fully, the accumulated tissue fluid will flow back to the internal jugular vein, and the neck translucency will disappear.

2. If the fetus has genetic abnormalities, the flow of tissue fluid back will be hindered, causing excessive tissue fluid to accumulate under the neck. Under B-ultrasound, it can be seen that the neck transparent layer has become thicker, and sometimes even neck edema or neck cystic hygroma may occur. Therefore, doing NT testing in early pregnancy can timely deal with abnormalities in the fetal genetic information, so as to make further treatment or decide whether to terminate the pregnancy as soon as possible.

As the first examination item for abnormal growth and development of fetal body parts, NT is also one of the key examination items for detecting fetal malformations. Therefore, expectant mothers must pay attention to the time of NT examination and should not exceed it too much, otherwise it will easily affect the accuracy of the test results. At the same time, if the NT examination shows any situation that is not within the normal range, further screening is required.