Fetal renal artery velocity waveforms and amniotic fluid volume in growth-retarded and post-term fetuses.
Renal blood flow velocity waveforms were recorded by Doppler ultrasonography in 114 growth-retarded fetuses and in 97 post-term fetuses. The pulsatility index (PI) values were compared with our reference limits for gestational age and related to the amount of amniotic fluid. Growth-retarded fetuses showed significantly increased PI values compared with normally grown fetuses, and this difference was particularly evident in cases of oligohydramnios. Furthermore, there was a significant negative correlation between the increase in PI and the amniotic fluid volume. Post-term fetuses showed no significant differences in PI values compared with term fetuses and no significant correlation between the amount of amniotic fluid and PI values.
Arduini
D
D
Department of Obstetrics and Gynecology, Universitá Cattolica S. Cuore, Rome, Italy.
Rizzo
G
G
D000653:Amniotic Fluid / Q000000981:diagnostic imaging*; D001783:Blood Flow Velocity; D005260:Female; D005317:Fetal Growth Retardation / Q000503:physiopathology*; D006801:Humans; D007231:Infant, Newborn; D007233:Infant, Postmature; D016104:Oligohydramnios; D011247:Pregnancy; D011673:Pulsatile Flow; D012077:Renal Artery / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal