Unless there are special circumstances, generally 3 to 4 B-ultrasound examinations can be performed throughout pregnancy.
First time: Do the first B-ultrasound examination within 12 weeks of pregnancy. At this time, the gestational age can be judged and extrauterine pregnancy and molar pregnancy can be ruled out. , twins, etc.
Second time: Do the second B-ultrasound examination around 20 weeks of pregnancy to see if the fetal development is normal No fetal malformations, etc.
Third time: Do the third B-ultrasound examination around 28 weeks of pregnancy to further observe the fetal development.
The 4th time: Do another B-ultrasound examination in the third trimester of pregnancy or before delivery to understand the fetal head diameter, femoral length and estimate the fetal maturity. Determine the location of the placenta, understand the maturity of the placenta, detect the amount of amniotic fluid, and timely detect and deal with problems such as too much or too little amniotic fluid.
This article is provided by Baidu Reading and is excerpted from \”Pregnancy Can Be Simple\” Author: Feifei Mom