As a doctor, when I am running through an Advanced Care Directive (ACD, what a DNR order is called in NSW Public hospitals) (I do it with all patients older than 70 that present to the emergency room), if they say they want 'everything', I say, yes, we will do everything that is in your best interests. But let's think about this case. If your condition was to deteriorate and your heart was to stop, would you like CPR? This would break all your ribs and also require a breathing machine. What about if you were to stop breathing and require a machine to breathe for you? Would you like to be attached to a ventilator? What about if you could not feed yourself? Would you want a feeding tube inserted?

Often by making people confront the actuality of what resuscitation means, you can change their ACD to something that is both medically appropriate for their condition and satisfactory for them, as they may have never thought about it in the terms you are describing it