Population
56 normal human fetuses, gestational age 17 to 37 weeks
Design
Cross-sectional
Authors
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Normative fetal pulmonary venous flow data may inform prenatal echocardiography interpretation; leaves open its diagnostic utility in congenital anomalies.
Fetal pulmonary venous flow demonstrates a continuous, biphasic pattern that increases in velocity with gestational age, lacking the atrial reversal seen postnatally.
Hong et al. (1999) studied this question.
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