Actually, come to think of it, what happened when that young basketball player had a heart attack (or some such thing) during the game. Died right on the spot before he was removed from the court. What happened then?
I think you're referring to Hank Gathers, for Loyola-Marymount College. I don't recall what they did in his case, but I remember his best friend on the team (whose name escapes me) shot his first free throw of every game with his non-dominant shooting hand for the rest of the season. And if I recall, he made every single one of them. They made a movie about it, called, appropriately, "The Hank Gathers Story".
Reggie Lewis, for the Boston Celtics, died of a heart condition as well, but I believe that was during a practice session.
I'm not familiar with that story. Perhaps someone else on the board knows the answer to that.