Patent ductus arteriosus?

Patent ductus arteriosus?
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DefinitionPatent ductus arteriosus (PDA) is a condition in which a blood vessel called the ductus arteriosus fails to close normally in an infant soon after birth. (The word "patent" means open.)The condition leads to abnormal blood flow between the aorta and pulmonary artery, two major blood vessels that carry blood from the heart.Alternative NamesPDACauses, incidence, and risk factorsBefore birth, the ductus arteriosus allows blood to bypass the baby's lungs by connecting the pulmonary arteries (which supply blood to the lungs) with the aorta (which supplies blood to the body). Soon after the infant is born and the lungs fill with air, this blood vessel is no longer needed. It will usually close within a couple of days. If the ductus arteriosus does not close, there will be abnormal bloo
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In mammalian embryo the pulmonary aorta communicates with carotico-systemic aorta by a narrow ductus arteriosus, in the adult this connection closes l

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