Not being in the medical industry, I'm curious what people say about the 4th paragraph here, indicating that many/most physicians would prefer not to have CPR performed on them.
http://www.guardian.co.uk/society/2012/feb/08/how-doctors-ch...
I was recently witness to exactly this situation. The father of a friend of mine, an otherwise healthy man in his late 50s, collapsed when his heart stopped due to what was later diagnosed as some heart rhythm problem (I'm not sure exactly the cause). A friend of the family performed CPR until the ambulance arrived (which took a while, this being a rural location).
Less than a week later he was back on his feet.
I'm not a medical professional, so I can't say for sure that he would have survived without CPR; but I don't doubt it was key to his survival.