Likely nothing: Following birth there are changes in the heart and blood vessels. The ductus arteriosis which shunts blood away from the lungs, closes, as does the ductus venosis, the foramen ovale which is a normal hole in the upper chambers of the heart which sends oxygenated blood returning from the placenta also closes, but this happens over time as it functions as a valve. Rarely these have to be closed.
Answered 11/7/2015
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