[Legal abortion and hemostasis. Histological examinations and comparison to post partum hemostasis (author's transl)].

30 women were examined to determine the hemostasis during the legally induced abortion. The blood coagulated in the intervillous spaces while the fetus is removed. Immediately after the termination of the curettment the nidation area is covered by filaments of fibrin and incorporated erythrocytes. More frequent as post partum platelet thrombi occur especially in the area of decidua parietalis. The intravascular findings are similar to post partum changes after the removal of the placenta. Obstruction clots of the spiral arterioles contain fibrin deposits, pletelet thrombi and erythrocytes (mixed form of thrombi). Residual decidua and trophoblast cells are seldom involved in the obturation of the vessels. The traumatic damages of the uterine wall are described (extravascular fibrin deposits, interstitial bleeding, succulent tissue a.s.o.).