Please, please try to relax and breath....Yes his BAT is elevated, but it could be a number of reasons...What has Olga said about it?
Yes it is true that he could shoot another shunt, or that his surgery wasn't successful at closing the shunt he had. I don't know for sure, but I wonder if that was the case if his BAT would be sky high again
Do you know what his BAT was before his LS surgery?
Also, he may also have an underlining MVD as well, and that may be why his BAT hasn't returned to normal after his LS surgery. If that is the case, you are already treating him with a special diet and supplements, so that is what you will have to continue to do.
I know this is very stressful and I know money doesn't grow on trees (to bad right
) ~ but we are here to guide and support you until you get to the bottom of all of this and back on track ~ have faith, you are a good person for rescuing him and you are a good person to be able to go above and beyond for him right now...