Phasic flow events at the aortic isthmus-ductus arteriosus junction and branch pulmonary artery evaluated by multimodal ultrasonography in fetal lambs

Article Abstract:

Blood flow in the ductus arteriosus occurs later and accelerates more slowly than in the aortic isthmus during the heart beat in fetal lambs. Researchers studied blood flow in seven fetal lambs, and found characteristic flow patterns in the aortic isthmus, ductus arteriosus, and the pulmonary artery. The ductus arteriosus causes blood to bypass the circulation in the lung during gestation, and closes by birth.

Blood flow measurement, Pulmonary artery, Ductus arteriosus

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Correlation between prenatal velocity waveforms in the aortic isthmus and neurodevelopmental outcome between the ages of 2 and 4 years

Article Abstract:

Doctors may be able to determine which fetuses are at risk for neurodevelopmental disabilities by analyzing blood flow in the aorta. The ratio of the forward movement of blood during contraction to the backward movement of blood during relaxation may predict which fetuses have low oxygen levels in the brain.

Evaluation, Diagnosis, Developmental disabilities, Fetal anoxia, Prenatal diagnosis

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Relationship between flow through the fetal aortic isthmus and cerebral oxygenation during acute placental circulatory insufficiency in ovine fetuses

Article Abstract:

Fetuses who are not receiving enough blood may still be getting enough oxygen to their brain as long as blood is flowing properly through their aorta. Sometimes, blood will flow backward under these conditions and this prevents enough oxygen from reaching the brain.

Health aspects, Oxygen, Oxygen in the body

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