Abstract
Objectives Proper uterine and placental vascularization is crucial for the adequate development of pregnancies. Pathological fetoplacental circulation leads to elevated resistance in placental vascularization which causes insufficiency and decreased fetal oxygenation. The aim of the study was to analyze placental vascularization in pregnant women with essential hypertension (EH) and pregnancy induced hypertension (PIH) with the help of VOCAL technique. Methods We measured placental 3-dimensional power Doppler indices such as vascularization index (VI), flow index (FI) and vascularization flow index (VFI) in pregnancies complicated by PIH (NPIH = 40), and EH (NEH = 40) and compared these to pregnancies with normal blood pressure (NNBP = 316). We analyzed the correlation between the above mentioned indices, the volume of the placenta and placental localization. We used two-sample Wilcoxon rank-sum test, Levene’s test and quantile regression. Results VI and VFI were significantly lower in pregnancies with PIH (VImean ± SD: 10.60 ± 10.40; VFImean ± SD: 2.77 ± 2.13) than in pregnancies with NBP ( p p p p Conclusions The direct 3-dimensional measurement of placental vascularization should gather more and more ground, because anomalies of uteroplacental and fetal vascularization appear too late, when complications have already been developed. Lower placental vascularization indices seem to be good ultrasonographic indicators for risk estimation and prevention of complications in pregnancies with hypertension. Disclosures A. Altorjay: None. A. Suranyi: None. M. Jako: None. T. Nyari: None. G. Nemeth: None. A. Pal: None.
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