What does fetal heart rate monitoring look like? How to tell the gender of the fetus through fetal heart rate monitoring?

There are many popular sayings about how to tell whether a pregnant woman is having a boy or a girl, including the saying that fetal heart rate monitoring can tell the gender of the baby. So how do you tell the gender of the baby using fetal heart rate monitoring? Is fetal heart rate monitoring accurate?

How to read fetal heart rate monitoring chart

There are many lines on the fetal heart rate monitor. When mothers see the layers of changing lines, do they feel dizzy? Don't worry, No. 5 website will tell you what to do. For the fetal heart rate monitor chart, mothers must first understand several basic concepts and what each concept means. Only by truly mastering these basic concepts can mothers read the fetal heart rate monitor 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, with no signs of hypoxia. If it is 8 to 7 points, it means that the fetus is suspected of hypoxia, and below 7 points means that the fetus is hypoxic in the uterus. If the fetal heart rate drops significantly when the fetus moves, and returns to normal when it is still, it is suspected that the umbilical cord is wrapped around the neck. The grid represents time horizontally and the number of times vertically. The upper row of graphs represents the direction of the fetal heart rate, and the lower row of graphs represents the pressure of the uterine cavity. Generally, the uterine cavity pressure is 20. If the uterine cavity pressure exceeds 50 times three times within 10 minutes, it means that the pregnant woman has symptoms of labor and has not yet reached the expected period. Pay attention to giving the fetus a stable labor. At the same time, colleagues are advised not to do it after 11 o'clock, because the hungry pregnant woman will also affect the results.

The following is the "Fetal Heart Rate Monitoring Scoring Standard"

(1) Baseline fetal heart rate (bpm): 180 beats/min is 0 points; 100-119 beats/min or 161-180 beats/min is 1 point; 120-160 beats/min is 2 points.

(2) Fetal heart rate variability (bpm): 2 points out of 10.

(3) Fetal heart rate increase (bpm): 10 is 2 points.

(4) Fetal heart rate decelerations: repeated late decelerations or repeated variable decelerations were scored as 0 points; variable decelerations were scored as 1 point; no or early decelerations were scored as 4 points.

After fetal heart rate monitoring, a fetal heart rate monitoring report will be issued. The doctor will score the fetal heart rate monitoring by adding up the scores of the above four items. If it is ≤4 points, it means fetal hypoxia, 5-7 points means suspicious and further monitoring is required; 8-10 points means that the monitoring response is good.

Is fetal heart rate monitoring accurate in predicting gender?

Fetal heart rate monitoring can determine the gender of a baby. If the baseline is between 120-130, it is definitely a baby. If it is a baby, it should be higher. It is not very accurate because it is instantaneous. I heard from the doctor when I was hospitalized some time ago that the later the pregnancy, the more accurate it is. When a boy moves, it is only 150, but when a girl does not move, it is 150. I often hear such statements. So is it true or false to determine the gender of a baby through fetal heart rate monitoring? Is it accurate? This is also the focus of many pregnant mothers.

Relevant experts pointed out that this is actually unscientific, because the content of fetal heart monitoring is the curve of the monitoring graph formed by the signal tracing the instantaneous fetal heart changes, which can understand the reaction of the fetal heart during fetal movement and uterine contraction, so as to infer whether the fetus is hypoxic in the uterus. Normal pregnancy starts with fetal heart monitoring once a week from the 37th week of pregnancy. If there are comorbidities or complications, it can be done from the 28th to 30th week of pregnancy. Attention should be paid to whether the rhythm of the fetal heart sound is fast or slow, etc. The normal fetal heart sound is 120 to 160 beats/minute. If the fetal heart sound is above 160 beats/minute or lasts for 100 beats/minute, it means that the fetus is hypoxic in the uterus and should be treated in time.

The normal heart rate of the fetus is between 120 beats/min and 160 beats/min. If the fetal heart rate is <120/min or >160 beats/min for more than 10 minutes, it indicates that the fetal heart rate is abnormal. At present, the application of fetal heart rate monitors has become more popular. During fetal heart rate monitoring, if there is an abnormality in the fetal heart rate graph, it is often used to indicate fetal heart rate abnormality. In most cases, fetal heart rate abnormality means that the fetus is hypoxic in the uterus. The more severe the fetal heart rate abnormality is, the more severe the fetal hypoxia is. However, not all fetal heart rate abnormalities are caused by hypoxia. In addition to the above situations, the condition of the pregnant woman herself also affects the changes in the fetal heart rate. For example, if the pregnant woman has a fever, the fetal heart rate will often exceed 160 beats/min. If the pregnant woman has hyperthyroidism, her heart rate is very fast, and the fetal heart rate often exceeds 160 beats/min. If the pregnant woman takes certain drugs, such as salbutamol taken during premature delivery, or atropine, it can cause the mother and child's heart rate to accelerate. A slow fetal heart rate may be caused by fetal hypoxia, but sometimes pregnant women take certain medications, such as propranolol, which act on the fetus through the placenta and cause the fetal heart rate to slow down.

How to read uterine contractions on fetal heart rate monitoring

Mothers may have great doubts about how to read uterine contractions on the fetal heart rate monitoring chart. As we all know, fetal heart rate monitoring is the main basis for checking the health of babies. Generally speaking, pregnant women can start fetal heart rate monitoring after 17 weeks, and doctors will analyze the test results under normal circumstances. But for mothers themselves, learning a skill to read uterine contractions is also a good choice!

According to the frequency of contractions, they can be divided into: normal (observed for at least 30 minutes, an average of ≤5 times per 10 minutes), too strong (observed for at least 30 minutes, an average of >5 times per 10 minutes). The contraction curve indicates the intrauterine pressure, which increases when the uterus contracts and then remains at around 20 mmHg. The observation of the contraction curve plays a very important role in judging deceleration (referring to the slowing of the fetal heart rate when contractions occur). Fetal heart rate deceleration is divided into multiple (deceleration within 20 minutes accompanied by at least half of the contractions) and intermittent deceleration within 20 minutes.

There are mainly two lines on 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 beats/minute), and when the fetus is large, the fetal heart rate is relatively slow. The difference between each beat of the fetal heart rate 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 be temporarily accelerated, higher than 160 beats/minute, but it will return to normal immediately, which is a sign of good fetal health. If the fetal heart rate beats more than 160 times per minute, or less than 120 times, or the heartbeat is irregular, sometimes fast and sometimes slow, beating and stopping, and there are gaps in the middle, it is abnormal. The lower line represents the intrauterine pressure, which will only increase during uterine contractions and then remain at around 20mmHg.

Precautions for fetal heart monitoring

Fetal heart rate monitoring is the abbreviation of fetal heart rate, fetal movement and uterine contraction chart. It is a graph that uses an electronic fetal heart rate monitor to record the fetal heart rate curve and uterine contraction pressure waveform for clinical analysis. Fetal heart rate monitoring is divided into medical and home fetal heart rate monitoring: hospital fetal heart rate monitoring included in the monthly regular pregnancy checkup after 12 weeks, and home fetal heart rate monitoring by pregnant women's families through home fetal heart monitors such as Beibinfen Fetal Heart Monitor, which monitors the fetal heart rate independently.

1. Before doing fetal heart monitoring, you can eat something, which can stimulate the fetus to move more.

2. If the fetus does not move during monitoring, it is most likely asleep. You can drink some water or juice to make the fetus move, or you can gently rub your belly and touch the fetus to wake it up.

3. Choose the time of day when fetal movement is most frequent to monitor fetal heart rate and avoid unnecessary repetition.

4. It is best to empty your bladder before doing this, as you may have to stay next to the fetal heart monitor for 40 minutes.

5. When monitoring the fetal heart rate, it is best to lie on your left side, and you can also put a cushion behind you. In some hospitals, pregnant women will sit on a chair to monitor the fetal heart rate, which is similar to sitting on a reclining chair.

6. Expectant mothers also need to maintain good sleep, have a good attitude and a relaxed mood, and avoid extreme joy and sorrow and emotional fluctuations.

7. Eat a reasonable and light diet, drink less strong tea and coffee, and eat less spicy foods such as chili and curry.

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