Cardiac shunt: There are many causes for low O2. At his age a congenital cardiac shunt such as a septal defect is a possibility. I would recommend consultation at a major center.
Answered 6/9/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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