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- W2056407795 abstract "Commonly, fetal abnormal Ductus venosus blood flow is defined by a significant reduction, absence or even reversal of the blood flow velocity waveform during atrial contraction. The velocity during systole remains unchanged resulting in an increased pulsatility of the Ductus venosus blood flow velocity waveform and abnormal blood flow indices. In this report, we present atypical Ductus venosus blood flow velocity waveform pattern with a decreased systolic forward flow of the Ductus venosus compared to the diastolic velocity in three fetuses with severe tricuspid valve regurgitation due to supraventricular tachycardia, Ebstein's anomaly and tricuspid valve dysplasia. Postnatally, this decrease in venous systolic forward flow is typically found in patients with tricuspid regurgitation, whereas this phenomenon is rarely found prenatally. For one reason, this may be due to the high prevalence of functional tricuspid valve regurgitation with little volume load. On the other hand, severe tricuspid valve insufficiency indicate congestive heart failure based on myocardial dysfunction or increased preload and/or afterload. In these instances, the severe diastolic myocardial dysfunction leads to an increase of pressure during atrial contraction and a decreased diastolic peak in the venous vessels. Only in rare cases, severe tricuspid valve regurgitation may lead to a more systolic impediment of venous flow." @default.
- W2056407795 created "2016-06-24" @default.
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- W2056407795 date "2004-08-01" @default.
- W2056407795 modified "2023-10-16" @default.
- W2056407795 title "P01.14: Atypical reduction of ductus venosus systolic forward flow in three fetuses with severe tricuspid regurgitation" @default.
- W2056407795 doi "https://doi.org/10.1002/uog.1320" @default.
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