Subchorionic hematoma occurs more frequently in in vitro fertilization pregnancy

Subchorionic Hematoma: Correlation of Grading Techniques With First‐Trimester Pregnancy Outcome

“…These findings differ from prior reports, which found a higher frequency of SCH in patients who were pregnant after in vitro fertilization than those conceived naturally. 21,22 In our study, the rate of pregnancy loss was significantly higher in patients 35 years or older with an SCH than those younger than 35 years, a finding consistent with at least 1 prior study. 9 One limitation of our study was that we were not able to collect information on other factors that may influence the pregnancy loss rate, such as parity, maternal comorbidities, and a history of pregnancy loss.…”

“…What we also found was that the presence of vaginal bleeding had no impact on the rate of pregnancy loss, nor did a history of pregnancy achieved by assisted reproductive techniques. These findings differ from prior reports, which found a higher frequency of SCH in patients who were pregnant after in vitro fertilization than those conceived naturally . In our study, the rate of pregnancy loss was significantly higher in patients 35 years or older with an SCH than those younger than 35 years, a finding consistent with at least 1 prior study .…”

Discriminant analysis forecasting model of first trimester pregnancy outcomes developed by following 9,963 infertile patients after in vitro fertilization

“…The inconsistencies may result from differences in the resolution of the ultrasonographic instruments or study populations. One study suggested that subchorionic hematoma occurs more frequently in pregnancies after IVF compared with spontaneous conception (18), but the mechanism underlying this finding is still unclear.…”

Impact of subchorionic hematoma in early pregnancy on obstetric complications: A retrospective cohort study in women who had live births after frozen‐thawed embryo transfer

“…[8][9][10] Moreover, a higher incidence of SCH in pregnancy achieved by assisted reproductive technology (ART) than in spontaneous pregnancy has been reported. 11 Therefore, the association of SCH in early pregnancy with ART-related pregnancy complications is an interesting topic.…”