What causes fetal heart rate to stop developing?

At around 7 weeks of pregnancy, the fetal heartbeat can be detected through some examinations. If the fetal heartbeat suddenly disappears after this, it is important to understand the specific reason. It may be related to the cessation of fetal heartbeat development. There are many reasons for this situation, such as endocrine disorders or chromosomal abnormalities in the fetus. In addition, if the pregnant woman herself has some reproductive infections, it is also easy to cause such harm.

What causes fetal heart rate to stop developing?

(1) Endocrine disorders in expectant mothers

When it comes to the reason why the fetal heart stops developing, the embryo continues to develop after implanting in the uterus. This process relies on an extremely complex endocrine system in the mother's body. The three important hormones, estrogen secretion, progesterone secretion, and human chorionic gonadotropin, need to be coordinated with each other. Once any link is abnormal, it may lead to fetal heart arrest and miscarriage.

(2) Chromosomal abnormalities

Among the causes of fetal heart arrest, chromosomal abnormality is also a very common and typical cause. Chromosomal abnormalities include abnormalities in chromosome number and structure. Whether the chromosome number is aneuploid or polyploid, or the structure is abnormal or missing, it will cause embryonic heart arrest, fetal miscarriage, deformity, etc. In order to avoid adverse fetal delivery, expectant mothers need to pay attention to prenatal diagnosis.

(3) Reproductive tract infection in expectant mothers

We know that after a pregnant woman becomes pregnant, her hormone levels will change significantly, and her body resistance will also decrease during this process. If the mother is infected with pathogens, especially a reproductive tract infection, these pathogens may infect the placenta through the bloodstream, eventually destroying the placental barrier, leading to a series of serious consequences such as embryonic development cessation and fetal miscarriage. In order to avoid terrible consequences, expectant mothers must be careful during pregnancy to avoid these risks.