There's one more thing i thought about concerning this comatose thing and this might help you some day. This little piece of information might come in handy some time in the future if you're in this circumstance.
If you knew a family and one of them was a homosexual, and he was in an automobile accident, and he was comatosed, you could always comfort that family by saying "Well, look at it this way: he was a fruit... now he's a vegetable! Hey, at least he's still in the produce section."