The current study aimed to find out the association and effect of subchorionic hematoma on outcomes of pregnancy in women with recurrent miscarriages. Patients and method: An analytic case-control study was conducted in the Gynecology and Obstetrics department at Salahadeen General Hospital during the period from the 1st of December 2022 to the 30th of June 2023. A convenience sample of 100 pregnant women with recurrent miscarriages was enrolled and divided into two groups: The case group: Included 50 women who had a subchorionic haematoma; Control group: Included 50 patients who did not have a subchorionic haematoma. Results: The number of miscarriages and preterm delivery was significantly higher in the case group compared to the control group (P-value=0.043). Among pregnant women who did not have a miscarriage, the incidences of placental abruption, placenta previa, and antepartum haemorrhage were significantly higher in the case group compared to the control group (P-values were 0.047, 0.028, 0.041, respectively). There was no significant difference between the study groups regarding maternal complications including blood transfusion, intensive care unit admission, and maternal death.

Conclusion: Subchorionic haematoma significantly impacted the outcome of the pregnancy as it was associated with a significantly higher number of miscarriages. subchorionic haematoma was significantly associated with a higher incidence of placental abruption, placenta previa, and antepartum haemorrhage. There was no significant impact of the subchorionic haematoma on neonatal complications.

Keywords: Recurrent miscarriage, subchorionic haematoma, Iraq