When is someone brain dead? Experts revise guidelines

Determining brain death is a complex process that requires dozens of tests to make sure doctors come to the correct conclusion.

With that goal in mind, the American Academy of Neurology has issued new guidelines — an update of guidelines first written 15 years ago — that call on doctors to conduct a lengthy examination, including following a step-by-step checklist of some 25 tests and criteria that must be met before a person can be considered brain dead.