Doctors are reinventing how they treat sudden cardiac arrest, which is fatal 95 percent of the time.

Sean Quinn, Died Nov. 13, 2005. It was not a heart attack; his heart just stopped. Doctors chilled Quinn for 24 hours. He now suffers from short-term memory loss, but without the induced hypothermia he might not have lived.

A small but passionate group of doctors say that electricity applied deep in the brain can jolt patients out of irreversible comas.