Many people know about Tang Shi and Tang Shi, but they know very little about the fetal nuchal translucency and do not know what kind of examination it is. At around three weeks of pregnancy, expectant mothers are required to undergo an NT examination, which checks the thickness of the nuchal translucency of the fetus in the belly to rule out the possibility of chromosomal abnormalities in the baby. When does the fetal nuchal translucency appear?
Under normal circumstances, the fetal nuchal translucency will appear between 10-14 weeks of pregnancy, specifically the fluid that accumulates under the skin of the fetal nuchal region. Ultrasound can be used for thickness inspection. The transparent band behind the neck of a Down syndrome baby is much thicker than that of a normal baby. Generally, if the thickness is greater than 3MM, it is considered an abnormal condition and the likelihood of giving birth to a Down syndrome baby is high.
The posterior cervical transparent band examination is usually performed within 11 weeks to 13 weeks and 6 days of pregnancy in women. Why is this cycle? Because babies before 11 weeks are too young, it is still technically difficult to perform ultrasound scans at this time. But if 14 weeks have passed, excessive fluid may be absorbed by the baby themselves, which can also lead to inaccurate NT test results.
It should be noted that the results of fetal nuchal translucency examination are not 100% accurate, and there are also some "out of condition" babies whose nuchal translucency is no different from that of normal babies. This requires pregnant mothers to pay more attention to prenatal screening to ensure that the baby born after October pregnancy is healthy and beautiful.
