3 documents found, page 1 of 1
Relationship between the Steuart resistance index of the umbilical artery in no...
Clode, N; Marques, J P; Casal, E; Graça, LUmbilical artery Doppler velocimetry was performed at 28-32 and 36-38 weeks of gestation in a low risk population to correlate the Stuart's resistance index (Sistole/Diastole--S/D) to the weight and ponderal index of the newborn, and to determine the preditive value of S/D ratio greater than the 95 centil in the screening of newborns of weight or ponderal index lower than the 10 centil. Two hundred and eight tw...
Umbilical flowmetry in twin pregnancy. A method for identifying discordant feta...
Clode, N; Casal, E; Graça, L MUmbilical artery velocimetry was performed in 33 twin gestations to evaluate the predictivity of the test (umbilical artery S/D difference between the pair > 0.4) in the screening of discordant fetal growth. Four out of 10 cases of discordant fetal growth were identified by the test and it was abnormal in 1 out of 23 concordant twins. The sensitivity was 40%, specificity 95%, positive predictive value 80% and n...
Doppler flowmetry of feto-maternal circulation: III --Absent and reverse diasto...
Graça, L M; Clode, N; Cardoso, C G; Colaço, A; Casal, E; Jorge, A F; Ferreira, H; Pereira, R; Martins, C; Silva, M OTwelve cases of extreme umbilical blood flow impairement (8 cases with loss of end-diastolic blood flow and 4 cases with reversed flow) found among 658 pregnancies studied by continuous Doppler between April 1st 1989 and March 31st 1990, are reported. The findings were associated to intra-uterine growth retardation (92%), maternal hypertensive disease (50%) and perinatal death (33%); fetal Trisomy 21 was the so...