1, double top diameter (BPD)
For the double crown diameter, many expectant mothers may feel strange, because the double crown diameter refers to the width distance from the baby's head to the left and right ends, which means the big transverse diameter of the baby's head. Why do you want to do this test? It is mainly through this examination to judge the baby's growth and development. Of course, doctors can also judge whether the baby is not suitable for natural delivery according to the size of this value. Generally speaking, the feet of full-term babies are about 8.26 to 10 cm thin, with an average of about 9.3 cm. However, due to the different physical conditions and constitutions of expectant mothers, there will be some differences, and our expectant mothers don't have to worry too much, because if there are differences, our doctors will tell you in advance.
2. Amniotic fluid index (AFI)
During pregnancy, the fetus was born in amniotic fluid for the last time. Too much or too little amniotic fluid will have a certain impact on the fetus in the maternal body. Therefore, expectant mothers should check whether their amniotic fluid index is up to standard during pregnancy. The index of amniotic fluid directly reflects the health status of the fetus in the abdomen. In general, the detection method of amniotic fluid index is to divide the uterus into four stages. Four quadrants: upper left, lower left, upper right and lower right. The sum of the vertical depths of these four quadrants is the amniotic fluid index. Under normal circumstances, the amniotic fluid index is more than 24 cm or less than 8 cm, which is abnormal. And if our expectant mothers find that some amniotic fluid indicators are high or low, our expectant mothers must pay more attention. Expectant mothers should always pay attention to the index changes of amniotic fluid volume to ensure the normal development of the fetus in the abdomen.
These two data on the B-ultrasound list can directly reflect the physical health of the fetus in the abdomen, and for some expectant mothers who see the B-ultrasound list with a blank face, they should gradually learn to display some data on the B-ultrasound list, which will help the healthy development of the baby in the abdomen and help the expectant mother to understand the baby's situation.