ArticleActa obstetricia et gynecologica Scandinavica2025
Placental size and umbilical vein volume blood flow.
Article in Acta obstetricia et gynecologica Scandinavica, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Umbilical venous blood flow and its association with placental pathology in pregnancies complicated by gestational diabetes mellitus.Acta obstetricia et gynecologica Scandinavica · 2025Article
- Placental size and umbilical vein volume blood flow.Acta obstetricia et gynecologica Scandinavica · 2025Article
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Authors and funding
6 authors.
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Abstract
introductionThe fetus receives oxygen and nutrition from the placenta through the umbilical vein. There is a large variation in placental size and placental size relative to fetal size (placental-fetal ratio). We studied whether placental size or placental-fetal ratio is related to blood flow in the umbilical vein. MATERIAL AND
methodsWe performed a prospective study at Akershus University Hospital in Norway and a total of 73 women were examined in gestational weeks 27 and 37. Fifty-six women were examined at both time points. B-mode ultrasound and Doppler ultrasonography were used to measure the umbilical vein volume blood flow per minute. Magnetic resonance imaging was used to measure placental and fetal volume. Pearson's and Spearman's correlation coefficients were applied for estimations of associations.
resultsIn gestational week 27, the umbilical vein volume blood flow was positively correlated with fetal size (Pearson's correlation coefficient r = 0.372, p = 0.003, and Spearman's correlation coefficient r = 0.384, p = 0.002), but not with placental size (Pearson's r = 0.130, p = 0.317, and Spearman's r = - 0.53, p = 0.687) or placental-fetal ratio (Pearson's r = - 0.61, p = 0.641, and Spearman's r = - 0.218, p = 0.092). In gestational week 37, we found positive correlations of the umbilical vein volume blood flow with fetal size (Pearson's r = 0.428, p = <0.001, and Spearman's r = 0.391, p <0.001), placental size (Pearson's r = 0.400, p = 0.001, and Spearman's r = 0.643, p <0.001), and with placental-fetal ratio (Pearson's r = 0.224, p = 0.066, and Spearman's r = 0.266, p = 0.028).
conclusionsA large placenta and a high placental-fetal ratio are associated with increased umbilical vein blood flow.
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