Small ovulation abnormality refers to the fetal NT examination at the first pregnancy 12- 13 weeks, and the fetal measurement again at the 30 th week of pregnancy, as well as the abnormal examination of important organs. The first abnormality check-up is during 12- 13 weeks of pregnancy, and NT check-up can also be performed when it is near 12 weeks.

NT examination is to measure the thickness of the zona pellucida behind the neck of the fetus. Most of the fetuses with abnormal chromosomes or genes, as well as fetuses with major congenital malformations, will have the thickening of the zona pellucida behind the neck of the fetus.

During this period, if NT is found to be ≥25mm, prenatal diagnosis will be suggested, and the next fetal malformation and chromosome diseases will be screened. When you are about 22-24 weeks pregnant, you will have a systematic large-scale ovulation. In addition, when you are 30 weeks pregnant, you will need to have a fetal abnormality check.

What are the points for attention in small row abnormality examination?

1, examination time: it is suitable for examination within 22-28 weeks of pregnancy. After this period, the fetal face, limbs, heart and other structures may not be observed completely or displayed clearly; If there is extremely little or no amniotic fluid, these structures of the fetus may also be unclear.

2. Use of instruments: High-resolution color Doppler flow imaging instrument should be used for examination. Generally, four-dimensional color Doppler ultrasound only requires the above conventional ultrasound examination, and generally, black-and-white ultrasound is not used for detailed systematic ultrasound examination of fetal malformation.

In addition, you should move more before doing the abnormality, which is conducive to the baby's fetal position to achieve the best position. You can show all the baby's conditions to Dr. Bc when you do BC examination, and there will be no cases where some of the baby's organs are unclear or invisible because of fetal position.