Figure 1From: Hepatic failure, neonatal hemochromatosis and porto-pulmonary hypertension in a newborn with trisomy 21 - a case reportColor M-mode of ductal flow on echocardiography. In systole (as indicated by the ECG marker) the flow is blue, i.e. from the pulmonary artery into the aorta; in diastole (as indicated by the ECG marker) the flow is red, i.e. from the aorta into the pulmonary artery.Back to article page