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Ductal flow velocities and right-to-left ventricular dimension ratio in normal human fetuses: relationship to maternal ingestion of polyphenol-rich beverages and foods. Systolic (a) ductal flow velocities are significantly higher in exposed fetuses. Diastolic (b) ductal velocities are significantly higher in exposed fetuses. (c) The right-to-left ventricular dimension ratios are significantly greater in exposed fetuses.
