From the Research
Risk of Miscarriage with a Large Subchorionic Hematoma at 12 Weeks Gestation
The risk of miscarriage with a large subchorionic hematoma at 12 weeks gestation is a significant concern. According to the studies, the presence of a subchorionic hematoma, especially a large one, increases the risk of miscarriage.
- A study published in the Archives of gynecology and obstetrics 1 found that the rate of miscarriage increased significantly with the increase in hematoma size, and that a subchorionic hematoma detected between 12 and 20 weeks of gestation was very likely to cause miscarriage or preterm birth in women with a medium or large subchorionic hematoma.
- Another study published in the Archives of medical science : AMS 2 found that large subchorionic hematoma was associated with a significantly higher rate of early pregnancy loss compared to smaller hematomas and the control group.
- A case report published in Medicine 3 highlighted the importance of regular examinations in pregnant women, as a massive subchorionic hematoma can cause significant space-occupying effects, affect blood supply to the fetus, and lead to fetal demise.
- A study published in Medical science monitor : international medical journal of experimental and clinical research 4 used machine learning models to evaluate pregnancy risks in women with subchorionic hematoma and found that SCH women had a significantly higher risk of stillbirth or miscarriage than non-SCH women.
- A retrospective cohort study published in Medicine 5 found that subchorionic hematoma in the first trimester was associated with higher rates of premature rupture of membranes and miscarriage, and that the incidence of miscarriage was significantly higher in patients with subchorionic hematoma who tested positive for autoantibodies.
Key Findings
- The presence of a large subchorionic hematoma at 12 weeks gestation increases the risk of miscarriage.
- The risk of miscarriage increases with the size of the hematoma.
- Subchorionic hematoma detected between 12 and 20 weeks of gestation is very likely to cause miscarriage or preterm birth in women with a medium or large subchorionic hematoma.
- Autoantibodies may be a risk factor for subchorionic hematoma and miscarriage.