Can fetal heart rate monitoring show uterine contractions?

Uterine contraction mainly refers to the degree of uterine contraction of a woman during pregnancy. When uterine contraction reaches a certain frequency, it indicates that the woman is about to give birth. When doing fetal heart monitoring, the frequency of uterine contractions is mainly used to reflect the frequency of the baby's heartbeat in the belly. However, after completing fetal heart monitoring, there will be a very complicated fetal heart monitoring graph. Many pregnant women say they can't understand this chart, so does fetal heart rate monitoring reflect the work?

How to detect uterine contractions in fetal heart monitoring? According to the frequency of uterine contractions, they can be divided into: normal (observed for at least 30 minutes, with an average of ≤5 contractions per 10 minutes)

times), too strong (observed for at least 30 minutes, an average of >5 times every 10 minutes). The contraction curve indicates the intrauterine pressure, which increases when the uterus contracts and then remains at around 20 mmHg. Observation of the contraction curve plays a very important role in determining deceleration (referring to the slowing of fetal heart rate when contractions occur). Fetal heart rate decelerations were divided into multiple (decelerations within 20 minutes accompanied by at least half of the uterine contractions) and intermittent decelerations within 20 minutes.

There are mainly two lines in fetal heart monitoring. The upper one is the fetal heart rate, which fluctuates between 120-160 under normal circumstances. When the fetus is small (less than 20 weeks), the fetal heart rate is relatively fast (can be 160-180 times/minute), and when the fetus is large, the fetal heart rate is relatively slow. The difference between each fetal heart beat is called short-term variability. The normal range of variation is 5-25 beats/minute. The fetal heart rate has 3-8 large fluctuations in one minute, which is normal short-term variability. However, after fetal movement, the fetal heart rate may briefly increase to above 160 beats/minute, but then return to normal immediately. This is a sign of good fetal health. If the fetal heart beats more than 160 times per minute, or less than 120 times per minute, or the heartbeat is irregular, sometimes fast, sometimes slow, sometimes beat and stop, with gaps in between, etc., it is abnormal. The lower line represents the intrauterine pressure, which will only increase during uterine contractions and then remain at around 20 mmHg.

For fetal heart rate monitoring charts, mothers must first understand several basic concepts and what each concept means. Only by truly mastering these basic concepts can mothers read the fetal monitoring chart smoothly! The most important aspects to master are the following:

1. The baseline fetal heart rate within 20 minutes is 120 to 160 times, which is the best in the absence of fetal movement. The full score is greater than 160 or less than 120. Points will be deducted as appropriate.

2. Amplitude is the fluctuation amplitude of the fetal heart rate baseline when there is no fetal movement. 10 or more is full score, 5-9 times is 1 point

3. The number of times the fetal heart rate rises during fetal movement should be greater than 15 times, the number from the starting point to the highest point.

4. The duration of the fetal heart rate rise during fetal movement should be greater than 15 seconds, the time from the starting point to the highest point.

5. The fetus should move more than 3 times within 20 minutes.

A full score means that the fetus is in good condition in the uterus within one week and there are no signs of hypoxia. If the score is between 8 and 7, it indicates suspected fetal hypoxia; if the score is below 7, it indicates intrauterine fetal hypoxia. If the fetal heart rate drops significantly when the fetus moves and returns to normal when the fetus is still, it is suspected that the umbilical cord is wrapped around the neck. The horizontal grid represents time, and the vertical grid represents the number of times. The upper row of graphs represents the trend of the fetal heart rate, and the lower row of graphs represents the pressure in the uterine cavity. The general uterine pressure is 20. If the uterine pressure exceeds 50 times three times within 10 minutes, it means that the pregnant woman has symptoms of labor, but the expected period has not yet arrived, so pay attention to preserving the fetus. At the same time, I suggest colleagues not to do it after 11 o'clock, because hunger in pregnant women will also affect the results.