CLOSURE OF THE DUCTUS ARTERIOSUS IN THE NEWBORN INFANT
- 1 July 1963
- journal article
- Published by American Academy of Pediatrics (AAP) in Pediatrics
- Vol. 32 (1) , 25-30
- https://doi.org/10.1542/peds.32.1.25
Abstract
Hemodynamic observations were made in 71 normal newborn infants up to 60 hours of age. A right-to-left or bidirectional shunt through the ductus arteriosus was demonstrated in 8 of 63 infants. Evidence of a definite left-to-right shunt was found in 7 of 30 infants. The data indicate that a bidirectional shunt is present shortly after birth and may persist for as long as 6 hours. This eventually becomes entirely left-to-right, and by 15 hours of age the shunting of blood either becomes physiologically insignificant or ceases entirely.Keywords
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