The studies were carried out on afterbirths in hypoxia of fetus and newborn.
It was discovered that instead of hypoxia cause, placentar hypoxia caused by hemodynamical malfunctions complex, involutive-dystrophical processes and pathological development occur. Compensation of placentar hypoxia is achieved due to terminal villir and their capillars’ hyperplasia with sincitiocapillar membranes and functionally active sincitial nodes development.