Max was born with a severe heart defect: right atrial isomerism. This means (in layman's terms) that he only has 1 ventricle instead of 2 and that he has 2 right atria instead of a right and a left. His heart's arteries were not connected to the correct places (transposition of the great arteries) and he has both an ASD and VSD (holes in his heart in 2 places). He has undergone 2 major surgeries and may have to have more surgeries in the future. There is no known reason that right atrial isomerism occurs and there is no cure, but with your help, we can support Max and others like him.