By the way, that 90% number means exactly nothing because it is completely dependent on the phrasing of the question. Click on your link and see that this response is conditional on irreversible brain damage. Under these conditions, the doctors also declined surgical interventions 80% of the time.

Look, CPR is a last ditch effort and there are reasons people get DNRs. But please don't go around spreading fear and confusion because of some radiolab factoid you heard.