The influence of influenza virus A(H3N2) in women in the first trimester of pregnancy on morphological structure of placenta and its blood channel
The influence of influenza virus A(H3N2) in women in the first trimester of pregnancy complicated by chronic placental insufficiency (CPI) and CPI with symptoms of the late gestosis on morphological structure of placenta and its blood channel was studied. It was understood that the viral infection in pregnant women with CPI leads to the decrease of the weight, diameter, square and thickness of placenta. The main type of branching of veins of chorion plate and the sets of umbilical veins narrowing are revealed quite oftener. The specific volume of vessels of stem and median villi against the growth of tiny cotyledons with badly contrasted vascular net decreases. The patients with influenza, CPI and late gestosis have less marked changes of organometric and radioanatomic characteristics of placenta with more significant compensatory increase of morthometric parameters of blood vessels of terminal villi as well as alternative and inflammatory changes in the wall of vessels and in the pervascular conjuncture tissue.