
Patent ductus arteriosus (PDA) is a congenital disorder in the heart wherein a neonate`s ductus arteriosus fails to close after birth. Early symptoms are uncommon, but in the first year of life include increased work of breathing and poor weight gain. With age, the PDA may lead to congestive heart failure if left uncorrected. The ductus arteriosu....
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http://en.wikipedia.org/wiki/Patent_ductus_arteriosus

congenital heart defect characterized by the persistence of the ductus arteriosus, a channel that shunts blood between the pulmonary artery and the ... [3 related articles]
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http://www.britannica.com/eb/a-z/p/27

A heart problem that occurs soon after birth in some babies. In patent ductus arteriosus (PDA), there is an abnormal circulation of blood between two of the major arteries near the heart. Before birth, the two major arteries – the aorta and the pulmonary artery – are normally connected b...
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http://www.daviddarling.info/encyclopedia/P/patent_ductus_arteriosus.html

<cardiology, embryology, paediatrics> A condition where the normal channel between the pulmonary artery and the aorta fails to close at birth. ... In normal foetal circulation the blood bypasses the pulmonary circuit since oxygen and nutrients are acquired through the placenta. After birth, this channel normally closes in response to ventilat...
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http://www.encyclo.co.uk/local/20973
(PDA) Type: Term See: ductus arteriosus
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http://www.medilexicon.com/medicaldictionary.php?t=26983

Patent ductus arteriosus: Failure for the ductus arteriosus, an arterial shunt in fetal life, to close on schedule. Before birth, blood pumped from the heart through the pulmonary artery toward the lungs is shunted into the aorta. This arterial shunt is a short vessel called the ductus arteriosus. When the shunt is open, it is said to be patent The...
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http://www.medterms.com/script/main/art.asp?articlekey=4798

[
n] - a ductus arteriosus that failed to close at birth
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http://www.webdictionary.co.uk/definition.php?query=patent%20ductus%20arter

a genetic disorder of the heart in which a channel connecting the pulmonary artery and the aorta fails to close and the heart must work harder to supply the body with blood
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https://www.encyclo.co.uk/local/20875
noun a ductus arteriosus that failed to close at birth; may require surgical correction
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https://www.encyclo.co.uk/local/20974

Heart problem that is seen most commonly in premature babies. The blood vessels connecting the two main arteries leaving the heart remain open after they should have closed. This is treated with medication and occasionally may require an operation.
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https://www.miraclebabies.org.au/content/glossary/gjr3og
(PDA) a blood vessel present in all infants that usually closes shortly after birth. It connects the aorta to the pulmonary artery. When it remains open, it allows extra blood to pass through from the aorta to the lungs. See ductus arteriosus.
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https://www.stanfordchildrens.org/en/topic/default?id=glossary---cardiovasc

condition in which the connecting blood vessel between the pulmonary artery and the aorta in fetal circulation stays open in the newborn.
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https://www.stanfordchildrens.org/en/topic/default?id=glossary---high-risk-
(PDA) a condition in which the connecting blood vessel between the pulmonary artery and the aorta in fetal circulation stays open in a newborn baby.
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https://www.stanfordchildrens.org/en/topic/default?id=glossary---pregnancy-

A congenital defect in which the opening between the aorta and the pulmonary artery does not close after birth.
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https://www.texasheart.org/heart-health/heart-information-center/topics/a-z
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