Hello,
I think the article he was referring to was called "Outpatient intravenous ketamine for the treatment of complex regional pain syndrome: A double-blind placebo controlled study" and dated I believe around 8/09. I believe it was in a Pain magazine. Try www.elsevier.com/locate/pain and look under august 2009 for the article named above. Let me see if I can find it for you.
kathy d