Renato Martins Santana

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OBJECTIVES To evaluate the prediction of acidemia at birth using ductus venosus Doppler velocimetry and to determine the best parameter and cut-off values for this prediction in pregnancies complicated with placental insufficiency. METHODS Prospective cross-sectional study. Forty-seven patients with placental insufficiency managed in two Brazilian(More)
OBJECTIVES To evaluate the prediction of acidemia at birth using cerebral transverse sinus (CTS) Doppler velocimetry and to determine the best parameter and cut-off values for its prediction in pregnancies complicated with placental insufficiency. METHODS This was a prospective cross-sectional study involving 69 pregnant women (26-40 weeks' gestation)(More)
OBJECTIVES Investigate the prediction of birth acidemia in pregnancies with placental insufficiency using two newly created venous-arterial Doppler ratios: pulsatility index (PI) of the ductus venosus (DV) over PI of the middle cerebral artery (MCA) and PI of the DV over PI of the umbilical artery and establish cut-off values for this prediction. METHODS(More)
OBJECTIVES The objectives of this study is to compare ductus venosus (DV) and cerebral transverse sinus (CTS) Doppler velocimetry for predicting acidemia at birth in pregnancies complicated by placental insufficiency. METHODS A prospective cross-sectional study involving 69 cases. Doppler assessment of the DV and CTS was carried out in the last 24 hours(More)
PURPOSE to study the value of Doppler velocimetry of the ductus venosus, between the 11th and 14th weeks of pregnancy, associated to the nuchal translucency thickness measurement, in the detection of adverse fetal outcome. METHODS a transversal and prospective study in which a total of 1,268 fetuses were studied consecutively. In 56 cases, a cytogenetic(More)
OBJECTIVES To investigate the possibility of predicting acidemia at birth in pregnancies with placental insufficiency by Doppler velocimetry of the ductus venosus and to establish the best parameter and cut-off points in this prediction. METHODS This was a prospective cross-sectional study, involving 47 single pregnancies with placental insufficiency(More)