When it comes to saving lives, God trumps doctors for many Americans. An eye-opening survey reveals widespread belief that divine intervention can revive dying patients. And, researchers said, doctors "need to be prepared to deal with families who are waiting for a miracle."

More than half of randomly surveyed adults — 57 percent — said God's intervention could save a family member even if physicians declared treatment would be futile. And nearly three-quarters said patients have a right to demand such treatment.

When asked to imagine their own relatives being gravely ill or injured, nearly 20 percent of doctors and other medical workers said God could reverse a hopeless outcome.