ABSTRACT
OBJECTIVE: The aim: To examine the morphology regarding the term placentas in pregnancies with threatened abortion with bleeding in the first trimester. PATIENTS AND METHODS: Materials and methods: 118 term placentas were selected, of which 40 placentas with the physiological course of pregnancy. 78 placentas were from women with threatened abortion with bleeding in the first trimester, of which 37 patients received hormonal therapy (group I), 41 women were prescribed symptomatic therapy (group II). Placentas were investigatedaccording to the protocol, which includes organometric, macroscopic and microscopic studies. RESULTS: Results: In the placentas of group II is a significant increase of the area of terminal villi compared due to the stroma against the background of a deficit of fetal capillaries. In group I have revealed that the specific weight of the vascular bed of the terminal villi was 1.5 times higher compared to the control (Ð =0.031) and 2.7 times higher than the group II (Ð =0.022) and dominates the share of the stroma. The weight of the epithelium of the terminal villi in all groups is approximately the same (Ð =0.042), but the ratio of the epithelium to the stroma is higher in the group I (0.63) than in the control (0.43). CONCLUSION: Conclusions: In women with a pathological course of the first trimester of pregnancy the compensatory mechanisms in full-term placentas are morphologically represented by an increase in the number of terminal villi, syncytio-capillary membranes, intensification of angiogenesis. In the placentas of women who received hormonal therapy adaptive reactions are most effective and able to compensate for the gestational immaturity of the chorion.
