There are also cases where an advanced directive isn't possible like with children. An ambulance driver friend of mine had a patient a few weeks ago, a newborn

There are also cases where an advanced directive isn't possible like with children. An ambulance driver friend of mine had a patient a few weeks ago, a newborn that had been abandoned, was deaf, blind, thought to be mentally retarded (not sure why) and suffering from heart failure. Apparently there was quite a bit of ethical debate at the hospital that night. A DNR might be good for people in specific circumstances but an advanced directive should not be required to be allowed to die.