Look at the amniotic fluid index in the checklist.
Generally speaking, after four months of pregnancy, the pregnant belly of pregnant women begins to grow rapidly. At this time, the growth of pregnant belly is not only the growth of fetus, but also the amount of amniotic fluid is increasing rapidly.
During the prenatal examination, the doctor will monitor the amniotic fluid volume through B-ultrasound. The specific method is to divide the uterus into four quadrants: upper left, lower left, upper right and lower right. The maximum amniotic fluid depth measured in each quadrant is what we call amniotic fluid index.
The normal range of amniotic fluid index is 9-24cm, and pregnant women only need to calculate whether their amniotic fluid is enough or too little. Basically, unless there is moderate or severe amniotic fluid, doctors will inform pregnant women in time. So if the doctor doesn't mention it, most of them say that amniotic fluid is within the normal range.
Look at the increase of uterine height and abdominal circumference.
The rapid growth of pregnant belly began in the fourth month of pregnancy, that is, 16 weeks, but the measurement of uterine height and abdominal circumference mostly began in the twentieth week, generally starting from 20 cycles, once every four weeks, once every two weeks from 28 to 35 weeks and once every 36 weeks.
During normal pregnancy, the average weekly uterine height will increase by 1cm within 2 1-34 weeks. After 34 weeks, the speed will slow down, about 0.65cm per week. If you enter the basin, the height of the uterus will drop instead of rising.
Abdominal circumference will increase by about 0.87cm per week within 34 weeks and 0.76cm per week after 34 weeks.
Therefore, if the data of pregnant women's uterine height and abdominal circumference increase well, at least it shows that the amniotic fluid volume and fetal development are quite normal as a whole.
Feel fetal movement state
Although fetal movement already exists in the first trimester, it is difficult for the fetus to reach the abdomen through amniotic fluid and be detected by pregnant women because of its small size and insufficient strength. But in the second trimester, fetal movement will be felt more or less in the early 15 weeks, and most in the late 20-24 weeks.
Amniotic fluid not only plays an important role in raising the fetus, but also plays an important role in buffering and protecting pregnant women. If there is too little amniotic fluid during pregnancy, the buffering effect will be relatively weakened, so pregnant women will feel pain during fetal movement, especially in the third trimester. If the amniotic fluid volume continues to be unsatisfactory, when the fetus touches the uterine wall, the probability of causing strong contractions in pregnant women will also increase.
Therefore, pregnant women's perception of fetal movement during pregnancy, on the one hand, can also draw the status of amniotic fluid. If there is no obvious abdominal pain during fetal movement, it means that the amount of amniotic fluid is sufficient. On the contrary, it means that the amount of amniotic fluid may be insufficient and needs attention.
Look at the fetal heart rate and fetal movements.
After 28 weeks of pregnancy, fetal movement can be clearly felt, and the fetal movement is regular. The number of fetal movements should enter the daily life of every pregnant woman, and 3 hours should be taken out every day. Under normal circumstances, the fetal movement is 3-5 times per hour, and the fetal movement is 3 hours ×4, which is 12 hours. If fetal movement exceeds 30 times in 12 hour, it may be abnormal if it is less than 20 times, which is less than 12 hour.
Fetal heart monitoring of normal pregnant women will start from 35.36 weeks. Of course, depending on the physical condition of different pregnant women, some may need to start 32 weeks or even 28 weeks in advance. Fetal heart monitoring lasts about 20-30 minutes each time, and the normal fetal heart rate is 120- 160 times/minute. If it lasts for 10 minutes, it is not within the normal range.