I saw your first post when you made it, Jean Michel, but thought I had better "hold fire" on this one (so to speak) ... if only to allow others more current than myself to have their say.
Personally, and from the technical point of view, I see no problem in proceeding as you have suggested.
My only real comment would be:- "What does the anaesthetist say"? After all, it is he who takes ultimate responsibility.
