[Ultrasound Doppler sonography in obstetrics. A comparison between simple Doppler methods (continuous or pulsed Doppler) and the duplex system (combination of B-image and pulse Doppler)].
120 pregnant women between the 26th and 42nd week of gestation have been examined using simple Doppler-units with pulsed- or continuous-wave technique and duplex Doppler-units (combined B-mode and pulsed-wave Doppler). The umbilical and uterine arteries were measured with both units in a semi-recumbent position at the same time by the same examiner. Only ideal flow profiles were taken to calculate the S/D-ratio. Our results were correlated to the fetal outcome, to all cases of pre-eclampsia and to all cases of intra-uterine growth retardation. Except in one of these cases we got the majority of pathological results using simple Doppler-units. Only in pre-eclampsia the duplex Doppler-units had the majority of pathological results. Even in normal fetal outcome the majority of simple Doppler-unit results are pathological. This finding is due to the impossibility to localize the vessel exactly using simple Doppler-units. Sensitivity is higher in simple Doppler-techniques (74.3% to 52.9%), specificity is higher in duplex Doppler-technique (77.9% to 52.6%).
Jörn
H
H
Frauenklinik der Medizinischen Fakultät der Rheinisch-Westfälischen Technischen Hochschule Aachen.
Fendel
H
H
Christ
B
B
D005260:Female; D005317:Fetal Growth Retardation / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange / Q000502:physiology*; D007744:Obstetric Labor Complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D007752:Obstetric Labor, Premature / Q000000981:diagnostic imaging / Q000503:physiopathology; D010923:Placenta Previa / Q000000981:diagnostic imaging / Q000503:physiopathology; D011225:Pre-Eclampsia / Q000000981:diagnostic imaging / Q000503:physiopathology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011273:Pregnancy, Prolonged / Q000502:physiology; D012307:Risk Factors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D016216:Ultrasonography, Prenatal / Q000295:instrumentation*; D014469:Umbilical Arteries / Q000000981:diagnostic imaging; D014599:Uterus / Q000098:blood supply
Ultraschall-Doppler-Sonographie in der Geburtshilfe. Ein Vergleich zwischen einfachen Dopplermethoden (kontinuierlicher oder gepulster Doppler) und dem Duplex-System (Kombination von B-Bild und gepulstem Doppler).