Obstetrical outcome of subchorionic hematoma in first trimester

Background: Threatened abortion during the first trimester of pregnancy may be due to many reasons including subchorionic haematoma (SCH).The presence of SCH can have several adverse effects on pregnancy outcome. AIM: To determine the impact of SCH identified during the first trimester of pregnancy on adverse pregnancy outcomes. Material and Methods: This was a prospective study conducted by enrolling 151 women each with and without Subchorionic Haematoma. All women were followed until delivery to observe the outcome of the pregnancy. Results: Out of 151 women in each of the two groups- 110 (72.8%) women with SCH and 118 (78.1%) women without SCH gave birth to a live neonate. The relative risk of pregnancy wastage (spontaneous abortion, IUFD & stillbirth) for the women with SCH and without SCH was 1.22 (95% CI 0.81 - 1.82; p-value = 0.33). 27% and 11.5% of pregnant women with and without SCH had a preterm delivery (p = 0.004). Conclusion- The mere presence of SCH did not increase the risk of pregnancy loss but there was increased incidence of IUGR,preterm bith,antepartum haemorrhage.