Well every school has a different interview process, so it is hard to say without going through each one. So when you are done you can let us all know what their general format is.
It appears that the interview process can be of two types, one that is clinically focused along with the usual "who are you" questions. And the other that is more "who are you" without a lot of clinical questions.
I have only been through the clinical question type. In those, you get questions regarding medications you commonly use (vasoactive drips etc,) Ventilator questions, Swan questions, maybe a scenario or two and a what would you do.
Your interview is very close, my suggestion is to try to relax, and show them what a great choice you would be.
If it is clinically based you know what you know. If you think you might be weak in something you could look at that, but I would'nt try to learn anything detailed, as in the stress of an interview it will just get muddled.
Wishing you the very best of LUCK. No, change that not luck, that just happens. This is something you put a lot of work into, so here's hoping that all your work pays off!!