Check up once a week after 36 weeks. Generally speaking, prenatal examination should be done once a month before 28 weeks of pregnancy, once every two weeks from 28 to 36 weeks, and once a week after 36 weeks, but the regulations in different regions and hospitals may be different. During the whole pregnancy, 10 ~ 15 prenatal examination may be needed.

Pregnancy examination items in the third trimester

routine examination

1. Urine sample: The examination items of urine sample include protein, sugar and ketone bodies, microscopic examination of red blood cells and white blood cells, etc. In general, the above indicators should be negative.

2, weight: the weight of pregnant women can indirectly detect the growth of the fetus. If the weight gain of pregnant women is too slow, then the fetus may be stunted; If pregnant women gain too much weight, the fetus may have great development and may need cesarean section.

3. Fetal heart: Fetal heart monitoring is to use electronic fetal heart monitor to record the graph of fetal heart rate curve and contraction pressure waveform for clinical analysis. Correctly evaluating the situation of the fetus in the uterus of the expectant mother is the main detection method. Fetal heart monitoring adopts microwave technology, which is harmless to the fetus.

4, fetal movement: expectant mothers can feel fetal movement around 18 weeks of pregnancy, and will feel it after 20 weeks of pregnancy. Fetal movement is initially 3-5 times per Xiaotian. With the increase of pregnant months of expectant mothers, fetal movement becomes more and more obvious. However, the number of fetal movements of expectant mothers will be slightly reduced before labor. If the baby is in a state of distress due to lack of oxygen in the uterus, such as early peeling, placental dysfunction, knotting, twisted or prolapsed umbilical cord, etc., the expectant mother will feel abnormal fetal movement. The initial symptoms are frequent fetal movement, and then slow down or disappear. Therefore, expectant mothers can know the safety of the fetus in the uterus in time according to the fetal movement count, which is helpful to find the abnormality of the fetus in the uterus at an early stage and reduce the mortality rate of premature infants.

5, abdominal circumference: the older the baby grows, the bigger the expectant mother's stomach. In the third trimester, the abdominal circumference will change greatly. The expectant mother is doing prenatal examination and measuring the abdominal circumference, which can facilitate the doctor to predict the baby's development in the uterus and whether it will induce developmental retardation or macrosomia.

6, blood routine: the normal value of blood routine is mainly to judge whether the expectant mother is anemia, and its judgment standards are different at home and abroad.

Key items of prenatal examination in the third trimester of pregnancy

29 ~ 32 weeks (sixth physical examination)

Examination items: edema and prevention of premature delivery.

After 28 weeks of pregnancy, doctors should check whether there is edema for expectant mothers one after another. In addition, expectant mothers should pay special attention to prevent premature delivery before 37 weeks. If the pain continues to worsen for more than 30 minutes, accompanied by vaginal bleeding or water discharge, it must be sent to the hospital immediately for examination.

33 ~ 35 weeks (seventh physical examination)

Examination items: B-ultrasound assessment of fetal weight.

At the 34th week of pregnancy, it is recommended that the expectant mother do a detailed B-ultrasound to evaluate the weight and development of the fetus at that time (for example, the fetus in pre-eclampsia will look petite) and estimate the weight of the fetus until full-term delivery.

36 weeks (eighth physical examination)

Production inspection items: prepare production matters.

Article 8 The inspection of production inspection is to prepare for production matters.

37 weeks (ninth physical examination)

Check items: pay attention to fetal movement.

Due to the more frequent fetal movements, expectant mothers should always pay attention to the fetus and their own situation to avoid premature delivery.

38 ~ 42 weeks (physical examination 10)

Check items: fixed fetal position, delivery, preparation for delivery, and consideration of delivery.

From the 38th week, the fetal position is fixed, and the fetal head has come down and stuck in the pelvic cavity. At this time, expectant mothers should be prepared to give birth at any time. Some expectant mothers still have no signs of delivery after 42 weeks, so doctors should consider using oxytocin.