ArticleHypertension research : official journal of the Japanese Society of Hypertension2025
Elevated sFlt-1/PlGF ratio in women with suspected or confirmed early-onset preeclampsia and super-imposed preeclampsia complicated by HELLP syndrome as well as abnormal umbilical artery Doppler findings and non-reassuring fetal status requiring immediate delivery: a prospective cohort study.
Article in Hypertension research : official journal of the Japanese Society of Hypertension, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We aimed to investigate the effects of serum sFlt-1/PlGF ratio levels in women with suspected or confirmed early-onset preeclampsia and super-imposed preeclampsia (PE/SPE) on composite and individual adverse maternal and fetal outcomes, stratified by gestational age at blood sampling (<34, 34-36, and ≥37 weeks). We also evaluated whether serum sFlt-1/PlGF ratio levels influenced the time interval from blood sampling to delivery. This prospective cohort study assessed serum levels of sFlt-1, PlGF, and the sFlt-1/PlGF ratio in women with suspected or confirmed PE/SPE admitted to a tertiary maternal-fetal-neonatal center between 2012 and 2023. Finally, 241 women were analyzed. An elevated sFlt-1/PlGF ratio at <34 weeks of gestation, but not at 34-36 or ≥37 weeks, was significantly associated with composite adverse maternal and fetal outcomes in women with suspected or confirmed PE/SPE. An sFlt-1/PlGF ratio of 400 was identified as the optimal cut-off level for predicting composite adverse maternal and fetal outcomes at <34 weeks. Among women with suspected or confirmed early-onset PE/SPE, HELLP syndrome alone was significantly associated with an sFlt-1/PlGF ratio ≥400. Additionally, the sFlt-1/PlGF ratio was significantly higher in women with HELLP syndrome, abnormal umbilical artery Doppler findings, or non-reassuring fetal status (NRFS) requiring immediate delivery, compared with those without these conditions. Furthermore, the interval from blood sampling to delivery significantly shortened with increasing sFlt-1/PlGF ratio. In conclusion, elevated sFlt-1/PlGF ratios were significantly associated with HELLP syndrome, abnormal umbilical artery Doppler findings, and NRFS requiring immediate delivery in women with suspected or confirmed early-onset PE/SPE. The sFlt-1/PlGF ratio at <34 weeks of gestation, but not at 34-36 or ≥37 weeks, was associated with composite adverse maternal and fetal outcomes in women with suspected or confirmed preeclampsia and super-imposed preeclampsia (PE/SPE). In women with suspected or confirmed early-onset PE/SPE, the sFlt-1/PlGF ratio was significantly higher not only in those with HELLP syndrome, but also in those with abnormal umbilical artery Doppler findings and non-reassuring fetal status (NRFS) requiring immediate delivery. Among women with suspected or confirmed early-onset PE/SPE, time to delivery from blood sampling decreased with increasing sFlt-1/PlGF ratio.
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