ANN ARBOR, Mich., Sept. 23 /PRNewswire-USNewswire/ -- When someone's heart suddenly stops beating -- a condition called cardiac arrest -- there's a lot that bystanders and ambulance crews can do to get it started
again. But if the victim doesn't respond, when should such efforts stop?

And when should emergency crews rapidly transport a patient to a hospital with lights and sirens on, potentially endangering the lives of paramedics and other motorists and pedestrians -- even though the care
provided by the emergency crew is the same as what can be provided in the emergency department?