Pränatale Dopplerdiagnostik

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The book covers the morphological and experimental foundations of Doppler sonography, focusing on the vascular supply of the human placenta and the uteroplacental circulation. It discusses a prospective comparison between umbilical artery flow and placental histology, and presents findings from blood flow measurements in chronically instrumented sheep. The clinical significance of Doppler frequency curves throughout pregnancy is explored, highlighting anatomical and physiological changes in uterofetoplacental blood flow, as well as the diagnostic value of CW Doppler sonography. The text delves into the application of Doppler sonography in high-risk pregnancies, comparing hormonal monitoring with Doppler methods, and examining the relationship between uteroplacental and fetal perfusion with maternal infection parameters in cases of threatened preterm birth. It also addresses the implications of Doppler findings in hypertensive disorders and insulin-dependent diabetes during pregnancy, as well as in twin pregnancies with growth discrepancies. Further, it investigates end-diastolic zero and negative flow in the umbilical artery and fetal aorta, comparing fetal outcomes of those with abnormal flow patterns to those with normal flow. The diagnostic value of cardiotocography in cases of end-diastolic block is assessed, and the significance of end-diastolic flow loss is discussed, alongside case studies of severe early intrauterine