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• W2997147293 abstract "Doppler velocity assessment is the most frequently used method in clinical practice to identify fetal well-being, as it is considered as a non-invasive estimation of the fetus and feto-placental circulation. The aim of the current study is to establish longitudinal reference ranges for MCA and UA Doppler velocities, systolic-to-diastolic (S/D) ratio, resistive index (RI) and PI, and cerebroplacental ratio. The current study was a multicentric longitudinal study of 428 singleton pregnancies and 1284 observations. Doppler ultrasound, middle cerebral artery (MCA) and umbilical artery (UA) peaked velocities, and pulsatility index (PI) were evaluated three times throughout a single session over gestational age range of 13–40 weeks. Based on 1284 observations, new longitudinal reference ranges for fetal middle cerebral peak systolic velocity (PSV), PI, RI, and S/D; reference ranges for umbilical artery PSV, PI, RI, and S/D; and reference ranges for cerebroplacental ratio PSV, PI, RI, and S/D were established. MCA PI, RI, PSV, and S/D curves are of parabolic pattern, and UA PI, RI, and S/D curves are decreased by age while UA PSV curve is of parabolic pattern; furthermore, cerebroplacental ratio (CPR) PI, RI, and S/D curves increased by age while CPR PSV curve decreased then increased by age. The reference ranges were at nearly variant from earlier studies and close to other studies. In the Doppler data combining both umbilical and cerebral velocimetry, MCA/UA ratio incorporates information not only on placental station but also on fetal response; it is possibly more beneficial in anticipating perinatal outcome." @default.
• W2997147293 created "2020-01-10" @default.
• W2997147293 creator A5008268175 @default.
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• W2997147293 date "2019-12-01" @default.
• W2997147293 modified "2023-10-17" @default.
• W2997147293 title "Ultrasound angiology reference standards of fetal cerebroplacental flow in normal Egyptian gestation: statistical analysis of one thousand observations" @default.
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• W2997147293 doi "https://doi.org/10.1186/s43055-019-0115-7" @default.
• W2997147293 hasPublicationYear "2019" @default.
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