Histological criteria of maturity of the uterine-placental area of manure

Abstract

In order to improve the procedure of morphological diagnosis of the degree of maturity of the uterine-placental area of the placenta, the authors conducted special studies of the structures of the placental bed of the uterus at different stages of gestation during physiological pregnancy and under various pathologies of the mother or placenta. Criteria for maturity of the uterine-placental area of manure in gestational segments 13-27, 28-36 and 37-40 weeks based on the percentage of spiral arteries with complete gestational remodeling of the walls due to the destructive effect of invasive trophoblast and the first parameters of the norm for the number of veins per unit area in the uterine-placental area. To morphologically determine the degree of maturity of the uteroplacental area, a table of the percentage of spiral arteries with complete gestational adjustment and the number of venous vessels per 1 mm² area of histological section according to gestational age. For morphological diagnosis of the degree of maturity of the placenta at different stages of gestation during physiological pregnancy and under conditions of different pathology of the mother or placenta, it is recommended to conduct a comprehensive morphological assessment of placental structures using maturity criteria of placental chorionic tree and maturity criteria of placental placenta.