Figure 6. The percentage of total pulmonary blood flow (PBF) that is derived from left-to-right flow (from the systemic into the pulmonary circulation) through the ductus arteriosus (DA) before umbilical cord occlusion (BCO), after umbilical cord occlusion and at selected intervals after the onset of pulmonary ventilation (designated as time 0).
Values that do not share a common letter are significantly different (P < 0.05) from each other.