[TChad]

"He and his mom say he was born with half-a-heart. He only has one right ventricle instead of two, and he doesn't have fully oxygenated blood traveling to his tissues like the rest of us."

Most people have a single right ventricle.

According to this article, the boy has only a left ventricle, and no right ventricle.

[billhilly]

It sounds exactly like my grandson’s condition, and it has a name. Hypo plastic left heart. It is rare, and most don’t survive infancy. My grandson lived sixteen years.