We had that discussion here... consensus was to do either NaAc or 3%. NaAc would theoretically be better, but 3% more easily obtained.
Personally, while lidocaine would theoretically work, it trades one poison for another, and if I had no other option, I'd go for it. Same for lipids. The HIE report was interesting, but probably more effect as a general cardiac support method than a true antidote.
Personally, I'm still trying to figure out how to microfilter Arm & Hammer. d=)
EM/Med Tox Attending
one should never underestimate the predictability of stupidity.