Does subchorionic hematoma have an effect on pregnancy and delivery?

Abstract

Background/Aim: It was aimed to investigate the prognostic effects of subchorionic hematoma(SCH) detected in the first trimester ultrasonography examination on the course of pregnancy and delivery.

Methods: In Kayseri City Hospital Gynecology Ultrasonography Outpatient Clinic, 3.126 pregnant had been performed obstetric ultrasonography between October 2019 and June 2020 and their results were investigated retrospectively. On obstetric ultrasonography which is applied in first trimester, bleeding areas (superior, inferior, side walls and anterior+posterior)
were classified according to their placement around the gestational sac. The SCH’s thickness was measured vertical to the uterine wall and it was recorded. Pregnancy process, birth week, method of delivery and birth weight was recorded. Obtained results were classified to bleeding area thickness, localization, whether it covers the internal os or not. The statistical analysis was performed by linear regression analysis and Student-t test according to the conclusion of pregnancy with abortion, early or term delivery and birth weight.

Results: SCH area defined around the gestational sac was detected in 65 pregnant women in the first trimester. According to the data obtained, a statistically significant inverse relationship was found between SCH thickness size and the week of termination of pregnancy(p<0.05). A statistically inverse relationship was found between birth weights in live births and SCH thickness(p<0,05). It was concluded that the effect of other findings on live birth, abortion or birth weight was not statistically significant.

Conclusion: The size of SCH that pose a threat of miscarriage in the first trimester affects the birth weight of the fetus and the week at which the pregnancy ends.