Because fetal heart rate is a dynamic data, each test may be different. The basic heart rate standard is 120- 160 beats/min, and the baby's fetal heart rate is influenced by the mother's mood. When the mother is excited, the baby's heart rate will be high. There are many other reasons that can also lead to the change of fetal heart rate, such as: the mother's heart is sick, or the mother's thyroid function is low.
Look at the birth of a baby boy correctly
First of all, the probability of having a boy has nothing to do with low fetal heart rate, and second, whether to have a boy depends on the father. If the sex chromosome of the fertilized egg is "XY", then the sex of the child is male. This Y chromosome is provided by the father, so it has nothing to do with the fetal heart rate. We should have a correct and scientific attitude towards this matter.
Why is there a saying that the lower the fetal heart rate, the greater the probability of having a boy?
This is due to the folklore that the fetal heart rate is lower than 140 beats/min, so it is likely to be a boy; And 140 times/minute or more are girls. Secondly, because some mothers do find that the fetal heart rate is low before giving birth to a male baby, and it is also a male baby, they will tell other expectant mothers to convince those mothers that this is the case. But it's just a coincidence.
Correct function of fetal heart rate measurement
Fetal heart rate is a means to predict fetal safety and to know how the fetus is in the body. Secondly, there is also the role of fetal heart monitoring during labor to observe whether the fetus is hypoxic. If the baby in the body is hypoxic, the corresponding fetal heart will increase. Fetal heart rate also plays a role in judging children's neurological development. The baby's heart rate is regulated by sympathetic and parasympathetic nerves. By slowing down the fetal heart rate, it may be known that there is something wrong with the baby's nerve development.