[Subchorionic hematoma as a risk factor of pregnancy and delivery in women with threatening abortion].

1. SCH is more frequent in multiparas, especially if previous pregnancy loss was reported. 2. About 40% of pregnancies with SCH are lost before 22 weeks gestation; bleeding is a bad prognostic factor 3. SCH diagnosed at the beginning of pregnancy is a risk factor of PIH in the third trimester. 4. SCH diagnosed in early pregnancy does not influence the method of delivery and does not increase the risk of adverse pregnancy outcome.