How many weeks does a pregnant woman have a major fetal anomaly screening?

We all know that fetal abnormality screening is a very important examination for both the fetus and the pregnant woman. Fetal malformation screening can effectively reduce the birth rate of deformed babies and ensure the physical and mental health of babies in more aspects. But some women are not very clear about the time of fetal abnormality examination. So, when is the best week for pregnant women to do fetal abnormality screening?

How many weeks is it best to do a fetal anomaly screening for pregnant women?

Generally, the examination can be carried out when the pregnant woman is around 18-28 weeks of pregnancy. Four-dimensional color ultrasound can display the color, face, and internal organs of the fetus in three dimensions, and even the condition of the fetus in the pregnant mother can be observed; malformations of the fetus, such as cleft lip and palate, cleft palate, abnormal bone development, cardiovascular malformations, etc. can be diagnosed at an early stage. Grasp the dynamic process of fetal movement in the uterine cavity, and then dynamically record the fetal movement in the uterine cavity as a permanent souvenir.

Generally, Down syndrome screening is done around 17 weeks to check for neural tube defects in the fetus. Alternatively, a 3D B-ultrasound can be done between 24 and 26 weeks to visually see the growth and development of the fetus, including whether the fetus has cleft lip and palate, and the development of internal organs.

It is best to have a color Doppler ultrasound examination between 18 and 20 weeks of pregnancy. During this period, each organ of the fetus has been fully developed. Careful B-ultrasound examination can show whether there is any abnormality in each important organ. The deformed fetus can be detected early and the pregnancy can be terminated immediately, with less impact on the mother's body. After that, if there are no abnormalities, you can do another B-ultrasound examination until the last few weeks of pregnancy to estimate the size of the fetus, understand the location of the embryo and the amount of amniotic fluid flow.

During pregnancy, you should have regular prenatal checkups and closely observe the growth and development of the fetus. Ultrasound examination is necessary, and generally significant physical abnormalities or deformities can be confirmed, but it is not certain. It is recommended to follow the advice of the clinician according to your own situation.

Benefits of taking a pregnancy test before delivery

1. It can predict the difficulty level of childbirth: Prenatal check-ups are also very helpful for childbirth. Through comprehensive and systematic examinations, you can understand the posture and development status of the fetus in the mother's body, and then make predictions to understand the difficulty level of childbirth. Only by knowing it well can you take effective measures to make up for it.

2. Detect the indications for cesarean section as early as possible: Some indications for cesarean section can be detected as early as possible through pregnancy examinations. Such as preeclampsia, placenta previa, early fetal separation, etc., these serious complications pose a certain threat to the lives of pregnant women and fetuses. Most of the various cesarean section indications occur in pregnant women who have not undergone prenatal checkups, and most of these complications can be detected in advance through prenatal checkups and certain effective measures can be avoided in many ways. Therefore, no matter how busy a woman is at work, she should never delay pregnancy check-ups on time because she finds it troublesome.

3. Be able to understand the growth and development of the fetus: Pregnant mothers should go to the hospital regularly for pregnancy check-ups. Through hysteroscopy and laparoscopy, they can understand the growth and development of the fetus and see if there are any abnormalities, such as incomplete development, deformity, etc. If there are any abnormalities, preventive measures can be taken immediately to ensure the physical and mental health of the pregnant mother and fetus. If you are unable to conceive again, you need to terminate the pregnancy.

4. Understand the baby's development status in time: Regular pregnancy checkups can help you understand and control the growth and development of the fetus.