Pregnant women need to undergo examinations at regular intervals throughout their entire pregnancy, and there are also many examination items, such as ultrasound or fetal heart rate monitoring, which are necessary to observe whether the child's growth is normal. If problems can be detected in advance, the birth of sick children can be avoided. So, what is the significance of the standard SD value in late pregnancy?
Firstly, it is necessary to understand what the SD value is. This is the standard value of the umbilical artery, which represents the ratio of its contraction and relaxation. The SD value is used to evaluate the function of the placenta, and it is a separate test of S and D. Under normal circumstances, as gestational age increases, the fetus needs to have a decrease in s and an increase in d. If the opposite is true, it indicates that the growth of the fetus is not normal.
Although the examination of SD value is important, other examinations cannot be neglected, such as regular ultrasound examinations every month, and four-dimensional color ultrasound examinations are also needed around six months to observe whether the child's development is normal. Four dimensional ultrasound can clearly see the development of the child's face and limbs to see if there are any deformities.
In the late stages of pregnancy, further fetal heart rate monitoring is needed, usually once a week. If the fetal heart rate is normal, it indicates that the child is also normal. If the fetal heart rate is too fast or too slow, it indicates that the child is abnormal.
