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F125Fetal pulmonary venous Doppler flow velocity waveforms in congenital heart defects
Author(s) -
Chaoui R.,
Lenz F.
Publication year - 2000
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.2000.00015-1-124.x
Subject(s) - medicine , cardiology , preload , diastole , cardiac cycle , doppler echocardiography , hemodynamics , blood pressure
Aim of the study is to analyze blood flow velocity waveforms (FVW) in the pulmonary veins using pulsed Doppler ultrasound in fetuses with a prenatally detected congenital heart defect (CHD). Methods In 96 fetuses with various CHD Doppler FVW from the pulmonary veins were assessed. Gestational age varied between 18 and 38 weeks. Following Doppler parameters were analyzed and compared to reference ranges: systolic (S), diastolic (D) peak velocity, end‐diastolic velocity during atrial contraction (A), peak velocity index for veins (PVIV) and Pulsatility Index for veins (PIV). Results We could distinguish 5 different patterns of FVW reflecting different stages of pulsatility and preload within the left atrium. Abnormal patterns were mainly observed in fetuses with left atrial obstruction and a restrictive foramen ovale having a reversed A‐wave as well as in mitral regurgitation. Conclusions Abnormal FVW in fetal cardiac defects depend from the left atrial pressure rather than on the cardiac defect itself. Patterns of FVW can help in quick differentiation of increased interatrial pressure, which can impair early neonatal outcome.