ArticleJournal of medical ultrasonics (2001)2024
Quantification of the size of subchorionic hematoma causing pregnancy-related complications: a retrospective cohort study.
Article in Journal of medical ultrasonics (2001), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Successful Management of a Massive Second-Trimester Subchorionic Hematoma: A Case Report.Case reports in medicine · 2026Article
- A Case of Large Subchorionic Hematoma.Cureus · 2025Article
- Article
- Prenatal diagnosis of subamniotic placental cysts.American journal of obstetrics and gynecology · 2025Article
Corrections and comments
- Erratum issued
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study aimed to establish criteria for defining "large" subchorionic hematoma (SCH) and assess its association with pregnancy complications.
methodThis was a retrospective cohort study conducted at our institution between 2019 and 2020. We compared the size of SCH between the pregnancy-related complication and non-complication groups, using two measurement methods. Receiver operating characteristic (ROC) curve analysis determined cutoff values. Additionally, we compared the occurrence of pregnancy complications among three groups: large SCH group (above the cutoff value), non-large SCH group (below the cutoff value), and non-SCH group.
resultsOf 1305 singleton pregnancies managed during the study, 80 cases were diagnosed with SCH. Pregnancy complications occurred in 15 patients. The patients with pregnancy complications had significantly larger SCH sizes with both measurement methods. For each method, the cutoff values calculated from the ROC curve analysis were as follows: Method 1, 25% (area under the ROC curve [AUC], 0.662); Method 2, 30% (AUC, 0.624). In Method 1, we found a significantly higher occurrence of preterm delivery in the large SCH group (24.1%) than in the non-large SCH (4.2%) and non-SCH groups (5.3%; all p < 0.01). In Method 2, there was a significantly higher occurrence of preterm delivery in the large SCH group (33.3%) than in the non-large SCH (6.5%) and non-SCH groups (5.3%; all p < 0.01).
conclusionLarge SCHs may indicate a high risk of pregnancy-related complications. Among these, recognizing and managing cases that exceed the aforementioned cutoff value as high-risk cases may be beneficial for reducing pregnancy complications.
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