How long does it take for the fetal heart rate to appear during pregnancy? How to check it?

Many female friends are concerned about the health of the fetus after they become pregnant. How long does it take for the fetal heart rate to be detected? The fetal heart rate can help detect whether the fetal heart rate is normal. Generally speaking, the fetal heart rate can be checked at 10-12 weeks, but the sound will be relatively small.

How many months of pregnancy does the fetal heartbeat

At present, high-sensitivity Doppler instruments are more commonly used, such as home fetal talk monitors. You can hear a heartbeat like the sound of horse hooves when the fetus is 10 or 12 weeks old. However, some hospitals may use a regular stethoscope, in which case the fetal heartbeat cannot be tracked until 17-18 weeks. There is also a situation where, in the early stages of pregnancy, due to the position of the fetus or other interfering factors, such as excessive maternal fat, the fetal heartbeat cannot be heard even with extremely sophisticated instruments.

How to monitor fetal heart rate

1. Fetal heart monitoring is the abbreviation of fetal heart rate, fetal movement and uterine contraction chart. It uses an electronic fetal heart rate monitor to record the fetal heart rate curve and uterine contraction pressure waveform for clinical analysis. It is the main detection method for correctly evaluating the condition of the fetus in the uterus. It uses microwave technology and is harmless to the child. You only need to buy a fetal heart rate monitor or a fetal talker.

2. The time for fetal heart monitoring is when the fetal heart rate can be heard at 12 weeks of pregnancy, but the fetal heart rate at this time is very weak and can only be heard with a Doppler fetal heart monitor or a fetal talker. The fetal heart rate can only be heard using a fetal heart rate stethoscope at 18 weeks. Generally, there is no need for self-monitoring using ultrasonic Doppler fetal heart rate monitor before 15 weeks of pregnancy. For pregnant women between 15 and 28 weeks of gestation, it is safe to measure three times a day for one minute each time. For pregnant women after 28 weeks of pregnancy, the fetus is fully differentiated and the time and frequency of monitoring can be extended. For high-risk pregnant women after 35 weeks of pregnancy (for example, pregnant women with gestational hypertension, hyperthyroidism, etc.), they should be hospitalized and have the fetal heart rate continuously monitored using a fetal heart rate monitor. If necessary, continuous monitoring can be provided for a long time (more than 1 hour).

3. Methods of fetal heart monitoring:

a. If the number of fetal movements is greater than 12 times, it is normal; if the number of fetal movements is less than 10 times in 12 hours, it is a decrease in fetal movement, and you should carefully find the cause and go to the hospital for fetal heart monitoring if necessary.

b. This method is simple, convenient and has a relatively high accuracy rate. Most doctors recommend this method to expectant mothers.

CB ultrasound observation: This method is generally for expectant mothers with special conditions, and can only be performed in the hospital.