I thought the tube in her nose was for her heavy breathing. Go figure. If they do a remake, they should show more details on how they change her human diaper and how the room smells like crap, u know? The actors should react more to the putrid stench as they enter Regan’s room. It’s little details that were in the book, but for the movie, I guess we don’t really need to see every thing that was in the book.