Fetal heartbeat during pregnancy
The heartbeat of the fetus is the main indicator of its viability. It reflects his condition and indicates some pathologies of development. That is why a competent assessment of the heart activity of the embryo during pregnancy and at the time of labor is very important. The baby’s heartbeat can be observed in several ways: auscultation, ultrasound, cardiotocography and echocardiography.
Heart formation in embryonic development
Formation of the heart in prenatal development is a very complex process. It begins already in the fourth week of pregnancy. First, a hollow tube is formed, it is she who will later develop into a complex four-chamber heart. This body is essential, because the slightest failure in its formation entails serious consequences. The fetal heartbeat is already noticeable in the fifth week - it will be a weak, subtle ripple. And only by the ninth week of the crumb the heart will acquire a structure the same as that of an adult.It is four-chamber, but there is a difference from an adult organ. This is due to the fact that, while in the womb, the baby still cannot breathe, and he receives the necessary oxygen through the blood from his mother. The baby between the atria has a window through which the arterial duct passes. It is precisely because of this that the supply of oxygen to the fetus takes place.
Fetal heartbeats weekly
Like other organs, the heart develops gradually. Therefore, the number of his cuts also at different stages of intrauterine development will be different. This is primarily due to the formation and complication of the functions of the autonomic nervous system in a baby. The functioning of all organ systems depends on it. Therefore, it is very important to study the heartbeat of the fetus. The rate of this indicator is as follows:
- 6-8 weeks - 110-130 beats per minute;
- 9-10 week - 170-190 beats per minute;
- starting from week 11 and before the onset of labor, these values will vary from 140 to 160 beats per minute.
The above figures are the norm and should not bother the future mom. It is a completely different situation if the heartbeat is too slow (less than 100 beats) or, on the contrary, frequent (more than 200 beats per minute).If the embryo has dimensions of 8 millimeters, but the heart rhythms are not observed in the study, then, most likely, we are talking about missed abortion.
Determining the baby's sex by heartbeat
It is believed that the heartbeat of the fetus can tell doctors the sex of the future baby. Of course, this method is not scientific, but it was widely used in the times when ultrasound did not exist. Then the main device for listening to heart rhythms was a stethoscope. It is noticed that in boys the heart contracts more loudly and steadily, but slightly with less frequency. While the heartbeat of the female fetus faster, but quiet. In other words, if the rate was below 140 beats per minute, then the birth of a strong guy was predicted, and if it was higher, then daughters. But, as practice shows, the rhythm of the heart is variable, therefore it is impossible to assert anything, relying on this method.