Sorry to hear of your issues... can you please explain what is APS?
While I have been through wringer... it was for another disease and now I am doing it again to see if I have a neuro disease so agree, it is not fun. I have some sort of platelelet disorder that does not have a name and only happens when it wants to.
I have had many surgeries and when they know you are at risk, they do try to do everything to help you but yes, try not to have you at their hospital (numbers game more). Be sure to meet with anesthesia before the day of the surgery as well as the hematologiest and find out what they want to do to control you so you are assured. As well, watch your diet before you surgery as some foods are natural blood thinners - even things like garlic.