When I approached my GP, I explained that I was having the procedure done and that I needed him to monitor me afterwards while on the blood thinner. I took a publication with me regarding CCSVI, which he really appreciated having. He gobbled the information up...it was amazing. Afterwards, he was way more receptive.
He also didn't understand why that particular drug was required. But again, after reading the printout I had from the IR, he then called my pharmacy to ask them about it and found that it is commonly used... He asked the pharm what blood work was required for followup and gave me all the paper work needed to get it done.
That turned out easier than getting approval from my insurance working with AAC. Still a total no go. Maybe some day...
Best of luck and hope your GP pulls through!