Had they been born a quarter-century ago, the 200 children would have been lucky to survive.
These days, the issues they face at Children's Hospital of Philadelphia seem mundane by comparison.
Can the children babble a few words? Put wooden pegs in holes? Kick a ball?
The 200 infants and toddlers are veterans of major heart surgery, and to the untrained eye they seem no different from any other kid, but for a faint scar on the chest. Yet increasingly, researchers at Children's Hospital and elsewhere are finding that such patients are more likely to experience subtle developmental delays.
A similar pattern holds true for cancer and other childhood scourges that have started to yield to the advances of modern medicine. After the big hurdle is cleared, there are smaller ones that no one ever used to think about. Mere survival is no longer good enough.