Key result
Advancing gestation during the second half of pregnancy was associated with a significant increase in fetal pulmonary venous velocities and a significant decrease in pulsatility indices.
Population
114 normal singleton pregnancies between 19 and 37 weeks' gestation
Design
Cross-sectional
Authors
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Provides reference ranges for fetal pulmonary venous Doppler; leaves open clinical utility pending prospective validation.
Cross-Sectional (n=114)
Establishes reference ranges for fetal pulmonary venous Doppler indices during the second half of pregnancy, showing a decrease in pulsatility indices reflecting increased left atrial and ventricular compliance.
Lenz et al. (2002) conducted a cross-sectional in Normal human fetuses (n=114). Advancing gestation was evaluated on Doppler parameters of fetal pulmonary venous blood flow (S, D, A velocities, TVI, S/D ratio, PIV, PVIV). Advancing gestation during the second half of pregnancy was associated with a significant increase in fetal pulmonary venous velocities and a significant decrease in pulsatility indices.
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