What do you think of B-ultrasound

summary

Generally speaking, women in pregnancy is to regularly go to the hospital to do B ultrasound examination, through B ultrasound examination, pregnant women can have a preliminary understanding of the general situation of the fetus in the abdomen, therefore, this article is to share with you how to see the problem of B ultrasound.

What do you think of B-ultrasound

First: fetal sac. Fetal sac is only seen in early pregnancy. Its size is about 2 cm in diameter at 1.5 months of gestation and 5 cm at 2.5 months of gestation. The position of the fetal sac in the fundus, anterior wall, posterior wall, upper part and middle part of the uterus is normal; the shape of round, oval and clear is normal; if the fetal sac is irregular, fuzzy and located in the lower part, and the pregnant woman has abdominal pain or vaginal bleeding at the same time, abortion may be necessary.

Second: fetal head. Complete contour is normal, defect and deformation are abnormal, midline displacement and hydrocephalus are normal. BPD stands for biparietal diameter of fetal head, which should reach 9.3 cm or more at term. According to the general rule, after 5 months of pregnancy, it is basically consistent with the month of pregnancy, that is to say, the BPD is about 7.0 cm at 28 weeks of pregnancy (7 months), 8.0 cm at 32 weeks of pregnancy (8 months), and so on. After 8 months of pregnancy, the average weekly growth of about 0.2 cm is normal.

Finally: fetal heart rate. In the monitoring of fetal heart rate, if there is fetal heart rate and the display is prominent, it is normal, otherwise, it is abnormal. Generally speaking, the normal frequency of fetal heart rate is 120-160 times per minute.

matters needing attention

After a clear understanding of the problem of how to see the B-ultrasound, pregnant women should also pay attention not to eat food that is easy to produce gas before B-ultrasound, so as not to affect the examination results.