During pregnancy, it is of great significance for pregnant women to go to the hospital for B-ultrasound examination. B-ultrasound during pregnancy can monitor the growth and development of the fetus and reduce the birth rate of children with malformations and defects. So, during the entire pregnancy, how many B-ultrasound examinations are best for pregnant women? Next, we will analyze it for us.
Experts point out that it is of great significance for pregnant women to have B-ultrasounds, but it does not mean that the more they are done, the better. Ultrasound is a physical factor, a type of energy. In the early stages of pregnancy, if a pregnant woman undergoes too many B-ultrasound examinations, it may affect the fetus. It is best not to do more than 4 B-ultrasounds during pregnancy.
First B-ultrasound examination: After 6 weeks of pregnancy, in addition to routine gynecological examinations, pregnant women should also use B-ultrasound examination to determine whether the intrauterine pregnancy is normal and to rule out abnormalities such as ectopic pregnancy, twins, molar pregnancy, etc.
Second B-ultrasound: Do another B-ultrasound at 18-20 weeks of pregnancy to understand the general situation of fetal growth and development. At this time, it can be determined whether it is a single or multiple pregnancy, and the fetal head circumference can be measured.
The third B-ultrasound: The time is set at 28-30 weeks of pregnancy. Doing B-ultrasound at this time can clearly understand the development of fetal tissues and organs, check whether there are any deformities on the body surface, and further understand the position of the fetus and the amount of amniotic fluid.
Fourth B-ultrasound: The last one was at 37-40 weeks of pregnancy. The purpose of the B-ultrasound examination at this time is to determine the fetal position, fetal size, placental maturity, and whether the umbilical cord is wrapped around the neck based on the diameter of the fetal head and bone structure. Measure and estimate fetal weight, determine fetal position, and perform final assessment before delivery.
B-ultrasound for emergencies during pregnancy:
1. Before pregnancy and early pregnancy, patients with pelvic masses or uterine fibroids need to undergo B-ultrasound examination to assist diagnosis and provide a basis for future treatment.
2. If a pregnant woman has threatened abortion and vaginal bleeding lasts for a long time, it is necessary to know whether the embryo is alive, whether the pregnancy needs to be continued, whether molar pregnancy may be ruled out, and a B-ultrasound examination is required.
3. If pregnant women have lower abdominal pain, they need to rule out extrauterine pregnancy or pregnancy complicated by tumors, and must undergo B-ultrasound examination.
4. For pregnant women with irregular menstruation, it is difficult to accurately estimate the number of weeks of pregnancy based on symptoms and signs. A B-ultrasound is needed to understand the embryonic development, estimate the number of weeks of pregnancy, and rule out multiple pregnancies.
Warm reminder: Four B-ultrasound examinations are required throughout pregnancy. But not too much. Some pregnant women do not know the purpose of B-ultrasound. In order to find out the gender of the child, they had to go to multiple hospitals for repeated B-ultrasound examinations, which was very harmful to the pregnant woman and the fetus. If you still have questions, you can consult an expert.