Hi Jennijojo,
You are going to do fine. Sounds like one of those hoops you have to jump through.
So I looked into the Bier block a bit further than the Dutch Protocol and I found this encouraging article from the Journal of Hand Surgery, European edition 2011.
http://www.ncbi.nlm.nih.gov/pubmed/21719518
Is your doc using methylprednisone along with the lidocaine? 88% in this study experienced relief and at five years out 92% were pain free. I don't know who ran the study or if it excluded any other treatments. Its nice to see something encouraging though.
Let us know how you do. I am sending thoughts of healing and a comfortable procedure.

