Actually ... being put under general anaesthesia is serious business. I've known folks who either have died, or nearly died, under anaesthesia because something went wrong.
If the folks in that office are so negligent as to leave a patient in that condition, they deserve to be slapped hard.
Of course, we have to take the "IF" part of that comment pretty seriously.
My sister had a knee replaced and was given a double dose of morphine as she recovered. She coded out and had to be revived. They looked into suing but could not prove damage.
I think they should be fined but as Judge Judy says, their mistake is not your windfall.