How long does it take to detect the fetal heart rate during pregnancy?

During pregnancy, pregnant women will go to the hospital for various tests, including fetal heartbeat tests. Fetal heartbeat detection not only allows the mother to hear the heartbeat of the baby in the belly, but is also an important way to check the health of the baby, and plays an important role in the baby. However, the fetal heartbeat cannot be detected as soon as the pregnancy begins. How long does it take to detect the fetal heartbeat?

How long does it take to detect a fetal heartbeat during pregnancy?

For normal intrauterine pregnancy, B-ultrasound examination can usually clearly see the embryonic bud, fetal heart rate, and fetal heartbeat in the uterine cavity 42 days after menstruation. For some women with irregular menstrual cycles, late ovulation, or late embryo implantation, the appearance of the fetal bud and fetal heartbeat in the uterine cavity and the time of the fetal heartbeat will also be relatively delayed, but it will not exceed 49 days after menstruation, and no later than 56 days. If after 56 days, there is still no fetal bud and fetal heartbeat in the uterine cavity, it should be diagnosed as embryonic arrest.

Measuring the fetal heartbeat can be a sign of whether the baby is alive or not. It is mainly to check whether the baby's heartbeat is normal. Almost every pregnancy check-up is done! Or if you feel uncomfortable, you can go to the local hospital for a fetal heartbeat test to find out whether the baby has ischemic hypoxia and other conditions, so that you can know whether the baby is normal. Frequent fetal heartbeats or infrequent fetal heartbeats are not good conditions, reminding the baby that he is in danger and needs to seek medical attention.

The fetus may begin to have a heart rate as early as 10 weeks of pregnancy. So, can you hear the fetal heartbeat with auscultation? Yes, but due to the principle of auscultation, the fetal heartbeat cannot be amplified. Therefore, if the fetus is too small, the heart rate is not obvious and cannot be heard with auscultation. Generally, the fetal heartbeat can be measured with a Doppler fetal heart monitor around 10-12 weeks of pregnancy, but it is not easy to hear the fetal heartbeat with a normal stethoscope at this time. The fetal heartbeat can only be heard with a stethoscope after 18-20 weeks of pregnancy.

Methods to save a fetus without a heartbeat

Generally, after 7 weeks of pregnancy, we can hear the fetal heart rate from B-ultrasound examination. Some babies may develop later and can only be heard after 8 weeks of pregnancy. In this case, expectant mothers do not need to worry too much. However, if the fetal heartbeat is still not heard after 8 weeks of pregnancy, it does not rule out the possibility of fetal maldevelopment.

When doctors encounter such a situation, 90% of them will recommend that expectant mothers have a follow-up ultrasound after 9 weeks of pregnancy. If the follow-up result is still no fetal heart, they will do corresponding examinations and treatments based on the specific situation.

If it is confirmed to be fetal death in the womb, the doctor will perform a uterine curettage. The doctor often performs a uterine curettage because he is afraid that the fetus will remain in the uterine cavity for too long, causing blood coagulation in the pregnant woman's blood vessels and leading to severe bleeding.

If the fetus has no fetal heartbeat or fetal bud, it is very easy to cause miscarriage or fetal death. Therefore, expectant mothers must do prenatal checkups according to the schedule during pregnancy. This is very important. Don't put yourself in a dangerous situation because of your own ignorance and carelessness.