ArticleReproductive medicine and biology2020
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.
Article in Reproductive medicine and biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.
- Association between subchorionic hematoma in the first trimester and outcomes of singleton pregnancies achieved through assisted reproductive technology: a systematic review and meta-analysis.Journal of assisted reproduction and genetics · 2024Pooled it
- Periconception Maternal-Serum Vitamin D, Vaginal Bleeding, and Subchorionic Hemorrhage in Early Pregnancy.Nutrients · 2026Trial
- Association between first-trimester subchorionic hematoma detected at 6-8 weeks of gestation and pregnancy outcomes after fresh embryo transfers: a propensity score-matching cohort study.Archives of gynecology and obstetrics · 2022Article
- 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.Reproductive medicine and biology · 2020Article
- Subchorionic hematoma: Research status and pathogenesis (Review).Medicine internationalReview
- Risk of Placenta Accreta Spectrum With Early Pregnancy Subchorionic Hematoma Location and Size in Hormone Replacement Cycles.Reproductive medicine and biologyArticle
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWe investigated the contribution of subchorionic hematoma (SCH) involvement in early pregnancy to the risk of pregnancy complications in women who underwent frozen-thawed embryo transfer (FET).
methodsA hypoechogenic area surrounding the gestational sac at early pregnancy on ultrasound was defined as SCH. Simultaneously, the presence of vaginal bleeding was evaluated. We included 1416 women with live births after FET between March 2015 and September 2018 in this study. The frequency of pregnancy complications was compared between the SCH (n = 340) and non-SCH (n = 1076) groups.
resultsThe adjusted odds ratio of abnormal placental adhesion and placenta previa for the SCH group relative to the non-SCH group was 7.01 [2.96-18.00] and 3.77 [1.24-11.91], respectively. In contrast, hypertensive disorders of pregnancy, non-reassuring fetal status, fetal growth restriction, chorioamnionitis, and premature rupture of the membrane showed no differences between both groups. Furthermore, the frequency of abnormal placental adhesion was higher in the SCH group with vaginal bleeding than in the SCH group without vaginal bleeding.
conclusionsSubchorionic hematoma in early pregnancy may cause abnormal placental adhesion and placenta previa in pregnant women with FET. SCH presence should be carefully noted, particularly in cases with vaginal bleeding during early pregnancy after FET.
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