For many women, the medical term "gross rejection" seems to be unfamiliar. In fact, large-scale screening can be analyzed literally as an examination of a large area of screening abnormalities. To put it more bluntly, it is a three-dimensional color ultrasound, which is mainly used to check the baby's delivery status in your abdomen and eliminate deformities. So, are there any signs of problems detected during the large-scale screening?
Abnormal screening refers to the examination conducted by women in hospitals or maternal and child health stations during the early stages of pregnancy to eliminate the possibility of malformed fetuses. B-ultrasound examination of the baby's facial features, limbs, and internal organs for abnormalities, blood and urine tests are general routine examinations, mainly to check for anemia. For abnormalities in the fetal central nervous system, if conditions permit, fetal MRI (magnetic resonance imaging) examination can be considered, as fetal MRI can provide more information and help improve the detection rate of fetal central nervous system abnormalities. Perform major screening at 20-24 weeks.
During this time period, most fetal structural abnormalities can be detected. If done too early, the fetus is relatively small and the corresponding organs have not yet developed well, making it impossible to detect structural abnormalities. The second consideration is to terminate the pregnancy. If the pregnancy is terminated too late and a large abnormality is discovered, and the fetus has entered a stage where it can survive, there will be complex ethical issues, and terminating the pregnancy at the gestational age will have a dual physical and psychological impact on the mother.
Is there any sign of a problem detected during the large-scale screening? In fact, there are no signs because it is a deformed fetus, which is also developing normally. Therefore, only through three-dimensional color ultrasound can we observe the good development of the baby from all aspects. But this project is usually done between 20-24 weeks, because by this time the fetus has already formed and problems with the baby can be better detected.
