losses at all stages of fetal development, the causes of which were termination of pregnancy, stillbirth, as well as death of children in the first year of life. As a rule, pregnancy losses are the consequence of not one, but a whole complex of causes acting simultaneously or sequentially. Some factors that can contribute to reproductive losses are:
1) genetic abnormalities in the development of the embryo;
2) extragenital (endocrine disorders, pathological immunological processes) and gynecological diseases of the mother (uterine pathologies, chronic infectious and inflammatory diseases of the reproductive system);
3) the impact of environmental factors.
According to a number of researchers, in about 50% of cases, the cause of pregnancy loss remains unknown.