Experiences like this really reinforce one's own good fortune in life.  When I was a boy, a cousin had childhood leukemia.  For some reason, this younger cousin - just a toddler, really - was very attached to me and I would go down to St. Jude's Children's Hospital in Memphis with my uncle, aunt, and cousin for her treatments.  What a tremendous lesson that was for me as a young boy.  Seeing all those seriously ill children being treated by an organization that did not charge and even put families in hotels and fed them while their sick children were being treated. 

Then, one time our second child as a toddler almost drowned in a kiddie pool practically right in front of us.  If not for our older child at the time saying, "Look, Ashleigh can swim underwater, too, " which alerted us while just standing a few feet away looking at our flower garden, things would have ended up differently.

Then, after our fourth girl was born, her pediatrician detected a heart murmur which troubled us for a year or two but turned out to be something somewhat normal and corrected itself.

I bring these up because after reading what your son, you and your family went through, I cannot fathom the terror all of you must have felt.  The horror of having to give CPR to one's child and after a previous collapse.

I hope your boy has no further troubles, has a long and active life and thank you for sharing this tale to remind us of the good fortune found in one's lives and to remind us not to take it for granted and to be compassionate in our thoughts of others. 

Eric