Population
143 normal singleton pregnancies at 20-40 weeks' gestation
Design
Cross-sectional
Authors
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Establishes normal reference ranges for fetal venous and atrioventricular Doppler flow parameters, showing increased velocities and decreased pulsatility indices with advancing gestation.
Establishes normal reference ranges for fetal venous and atrioventricular Doppler flow parameters, showing increased velocities and decreased pulsatility indices with advancing gestation.
Hecher et al. (1994) studied this question.
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