The causes of fetal failure are very complex, and the exact cause is not yet completely clear. It may be related to maternal causes, the embryo’s own causes, and environmental factors.
1. Maternal causes
(1) Endocrine factors: the mother suffers from certain endocrine diseases, such as thyroid dysfunction, luteal insufficiency, polycystic ovary syndrome, hyperprolactinemia and so on, all of which are not conducive to the continued growth and development of the embryo, thus causing fetal arrest.
(2) Infection: Infection with certain viruses during pregnancy, such as rubella virus, cytomegalovirus, etc. may cause fetal arrest.
(3) Reproductive tract factors: congenital anomalies in uterine development, giant fibroids, adenomyosis, uterine adhesions, etc. may affect the intrauterine environment and fetal growth and development, resulting in fetal failure.
(4) Others: such as emotional stress during pregnancy, abuse of medication, bad lifestyle, long-term smoking and drinking, etc. may damage the development of the embryo, thus causing fetal arrest.
(2) Embryo’s own factors: mainly seen in fetal chromosome number abnormalities and structural abnormalities. For example, fetuses with 18-trisomy syndrome and 21-trisomy syndrome have a higher probability of developing fetal eclampsia.
3. Environmental factors: the presence of a large number of chemicals in the environment, such as radiation, lead, formaldehyde, benzene, etc. may cause fetal arrest.
If you have an occasional fetal ejection, you don’t need to be too anxious, and you should avoid all kinds of high-risk factors that cause fetal ejection when you get pregnant next time. However, if you have a continuous occurrence of fetal ejection, you should go to the regular hospital for a comprehensive examination and search for the cause of the disease.