If circulation persists between the pulmonary artery and the aorta, the infant has persistent fetal circulation through which opening?
a. Ductus arteriosus c. Foramen ovale
b. Ductus venosus d. Umbilical vein
A
Ductus arteriosus is the fetal shunt that shunts blood from the pulmonary artery to the descending aorta, bypassing the lungs. Ductus venosus is the fetal shunt that shunts blood from the liver to the inferior vena cava, bypassing the liver. Foramen ovale is the opening between the fetal atria to bypass the lungs, and the umbilical vein is the vessel that transports maternal blood from the placenta to the fetus.
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