I will keep your little Max in my thoughts and prayers today...and you as well. I know how your day will be spent...worrying. Try to keep your thoughts positive...I know how scary things can be...especially for a nurse. We tend to forget everything when it is our own and think the absolute worst of things. (well...at least I do...guess I should not speak for all)
I hope that all goes well. Sounds like they are covering all bases and that you will have a definitive answer soon.