Pregnant women need to undergo regular ultrasound examinations at the hospital during pregnancy, which is one of the important tests to understand the growth and development of the fetus. However, some pregnant women do not know how many times ultrasound examinations can be performed during pregnancy. Is it better to do more times or more times is not better? So some pregnant mothers want to know if frequent ultrasound has any impact on their children?
Pregnant women do not need to undergo too many ultrasound examinations during pregnancy, as frequent ultrasound examinations can have an impact on the normal development of the fetus, especially in the early stages of pregnancy. This is because early pregnancy is a critical period for the division of embryonic cells and the formation of the brain. If multiple ultrasound examinations are performed at this time, it can have an impact on the growth and development of the fetus, and even pose a risk of developmental abnormalities.
Pregnant women have a limit on the number of ultrasound examinations during pregnancy, generally controlled at four to five times. The first ultrasound examination should be conducted at five to six weeks of pregnancy, mainly to determine whether there is an intrauterine pregnancy, which can timely rule out the possibility of ectopic pregnancy or molar pregnancy. The second ultrasound examination should be conducted at 12 to 16 weeks of pregnancy, which can determine whether it is a single or multiple pregnancy, and measure the size of the fetus to understand its development and the position of the placenta.
The third ultrasound examination should be conducted between 20 and 24 weeks of pregnancy, during which time the ultrasound examination is a screening test to determine if there are any abnormalities in the growth and development of the fetus, as well as to observe the amount of amniotic fluid in the uterus. The fourth ultrasound examination should be conducted between 28 and 32 weeks of pregnancy, mainly to understand the growth status and placental function of the fetus. The fifth ultrasound examination should be conducted between 37 and 40 weeks of pregnancy to further observe the fetal position, size, maturity of the placenta, and presence of umbilical cord entanglement in the neck, for the final evaluation before labor.
