Nah if you're braindead, you're dead, you're not coming back, the brain has died but the stem never tells the heart, so it keeps pumping, keeping your body like you're alive, but you're fucking gone.
Which is why families have such a hard time consenting, because they still have a heartbeat, they're warm and have blood going through them, and it's hard to grasp that the loved one is only dead because his brain died.

