It is not possible to provide any useful information regarding the unfortunate medical condtion of your child. It is not unexpected that child doesn't have any symptoms, but if the problem is not corrected it will lead to an enlargement of the heart ventricles. If and when that happens the heart will lose its ability to pump adequately and a heart transplant would be the only treatment.
You can post a question to a professional and the link is posted at the top o the page.
Hope that helps, and sorry to hear of child's medical condition. Thanks for the question and hope it all goes well for your child. Take care.
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