What are the fetal anomaly screening tests during pregnancy?

All parents do not want to give birth to a deformed baby, but once a baby is born with a deformity, it is almost impossible to cure it, and it will bring great harm to the entire family. Therefore, the most important way to deal with the problem of baby deformity is to take preventive measures. So after women become pregnant, they must go to the hospital for a deformity examination. Such an examination is very necessary. The following introduces the items of the deformity examination.

What are the fetal anomaly screening tests during pregnancy?

B-ultrasound checks the baby's facial features, limbs and internal organs for abnormalities, while blood and urine tests are general routine examinations, mainly to check for anemia. It is recommended to screen for Down syndrome at 16-20 weeks, with fasting blood draw - mainly to screen for fetal neural tube defects,

Three-dimensional color ultrasound is performed around 24 weeks, which can clearly display the organs of the fetus, understand the growth and development of the fetus, and observe whether there are any deformities in the gross structure of the head, limbs and organs. In addition, fetal heart rate, blood pressure, etc. should be checked regularly. Please contact your local hospital or maternal and child health center for details!

During pregnancy, many expectant mothers undergo B-ultrasound mainly to check the growth and development of the baby in the mother's body, including the general condition of the placenta and amniotic fluid. The major fetal malformation screening is actually called "systematic prenatal ultrasound examination in the second trimester". In addition to checking the aforementioned conditions, it also examines the various organ systems of the fetus in detail to screen for significant malformations in the fetus. It is usually performed using three-dimensional or four-dimensional color ultrasound, which can detect most fetal malformations, such as malformations of the face, limbs, brain, internal organs, and heart. The "major fetal anomaly screening" test is usually scheduled around 20 to 24 weeks of pregnancy. If it is done too early, the fetus is still relatively small and the corresponding organs have not yet developed well, so there is no way to detect corresponding structural abnormalities. If it is done too late, the fetus's movement space will be smaller and some parts may be blocked, making it difficult to observe.

You do not need to fast before the "major fetal fetal screening" examination, but you should have a good breakfast. You can carry some snacks or chocolates with you. This examination requires checking many parts of the fetus. If the angle is not right, the doctor cannot see clearly. Walking a little and eating some sweets can increase fetal movement. When the baby moves at the right angle, the doctor can do a comprehensive examination.

It is not necessary to choose three-dimensional or four-dimensional ultrasound for major fetal malformation screening. In fact, the accuracy of major fetal malformation screening does not mainly depend on these two factors, but depends on the professional level of the ultrasound doctor and whether the examination is conducted in accordance with the standards. When screening for major malformations is performed by an experienced sonographer, 2D ultrasound is sufficient. Three-dimensional imaging is only useful in special circumstances, such as when a more intuitive examination of fetal facial abnormalities is required. Four-dimensional ultrasound is even more of a gimmick and is only needed in a few cases. In comparison, it just adds a time axis to see dynamic three-dimensional imaging in real time. Therefore, instead of trying to make an appointment for a four-dimensional scan, expectant mothers should spend some time finding a reliable ultrasound doctor.