When will a large area of abnormal pregnancy be done? At present, the main tool of large-scale abnormal pregnancy in obstetric hospitals is four-dimensional color Doppler ultrasound. The best time to do four-dimensional color Doppler ultrasound is that the fetal limbs and main organs have all developed after 0/6 weeks of pregnancy, and the best time to check is 24 -28 weeks of pregnancy. The amniotic fluid volume is more suitable for fetal malformation screening. Generally, four-dimensional color Doppler ultrasound can be used for prenatal abnormalities around 24-28 weeks. Four-dimensional color Doppler ultrasound can show the color, face, development of various organs and even the state of the fetus in the mother. It can be used for early diagnosis of fetal malformations, such as cleft lip, cleft palate, skeletal dysplasia and cardiovascular malformations. Generally, there is a B-ultrasound around 20 weeks of pregnancy, which is more careful and comprehensive, mainly to expel abnormalities. B-ultrasound will also look at it later, but focus on measuring the fetal neckline to see if the growth and development speed is normal. In this gestational age range, the fetal size is moderate and the ultrasound development is clear. You don't need an empty stomach before doing a "big abnormality" examination. It's best to eat a good breakfast, because the baby will move more violently after eating something good. You can bring some snacks or chocolates. The examination of "large row malformation" depends on many parts of the fetus. Once the angle is wrong, the doctor can't see clearly. It may make you go out to eat sweets to promote your baby's exercise. If the baby moves at the right angle, the doctor will be able to make a comprehensive examination.
How many times should I check for anomalies? The first check-up time is 3-4 months of pregnancy, and the gestational age is 1 1- 14 weeks. During this period, we can observe the baby's development and activities as a whole, screen the potential chromosome indexes such as fetal nt value, and diagnose and check some serious fetal structural abnormalities. The second examination time is 4-5 months of pregnancy, and the gestational age is 17-20 weeks. During this period, the fetal hand and foot have been initially formed, and the development of fetal hand and foot extension has been observed, which makes the diagnosis of fetal hand and foot malformation more clear. The third examination: the best time for this abnormality is 5-6 months of pregnancy and 20-26 weeks of pregnancy. This time is very important for the baby. Four-dimensional color Doppler ultrasound system can comprehensively detect the baby's development, screen and diagnose fetal structural abnormalities and hereditary diseases, which is the best opportunity to eliminate abnormalities. The fourth examination time is 7-8 months of pregnancy and 32-34 weeks of pregnancy. This period of time is mainly to evaluate the survival status of the fetus, check the baby's later development status, such as kidney and heart abnormalities, and provide valuable information for the fetus to be born as close as possible to the expected date of birth, or to choose a suitable birth time. The fifth examination time is from September of pregnancy to before delivery. Before labor, it is necessary to determine the orientation of the fetus, mainly to check whether the amniotic fluid is reduced, the placental maturity, whether the baby is safe in the mother's stomach, remind the baby's weight and development, and prepare for delivery.