So the definition of being dead is an individual who has sustained either (1) irreversible cessation of circulatory and respiratory functions, or (2) irreversib

So the definition of being dead is an individual who has sustained either (1) irreversible cessation of circulatory and respiratory functions, or (2) irreversible cessation of all functions of the entire brain, including the brain stem, is dead. Does this mean the donor was (1) or can the "revive" after (2)?