http://journals.lww.com/anesthesiolo...lgesia.11.aspx
Not the original source I read this from, I think it was in Tintinalli, but I found this almost instantly.
[A few mins later...]
Whew, good thing I have a copy of Tintinalli in my home. It wasn't in there, but I WILL find where I got that information.
I remember it as being particularly shocking, a few months ago I overheard a vet talking to one of her techs about using narcan for ketamine, and I thought to myself "Hah! She clearly dosen't know how ketamine works." Later out of curiosity, I did some research on it, and sure enough they found that Ketamine had some action on optiate receptors at hypnotic doses. This seems counterintuitive, being that one of the strong points of ketamine is that it ISN'T an opiate and thus does not carry the same undesirable side-effects... but anyway, I'll keep working on it because I know the type of fire I'll be under if you don't see more proof.