I interviewed at two schools and their interviews were completely different. I would look into the specific school you’re applying to and try to find some details on the school. Talk to people and find out what their interview style is.
Definitely be prepared to answer questions about the AANA and your state organization as well. Know who the presidents of those organizations are and at least one major bill in progress and what CRNA’s are fighting for.
As far as clinical questions go, depends on the school. First school I interviewed at was 95% clinical based questions, where the second school was only about 20-25% clinical based. Know what you SHOULD know. They won’t expect you to know stuff about open hearts and impellas if you work in a Trauma/SICU or Neuro ICU. Have two patient scenarios that you can talk about in depth; their disease process, medications they were on, all down to the molecular level. Basically, if you’re giving a medication and are talking about it in your interview, you should know EVERYTHING about it. Both schools I interviewed at let me “lead” the interview with the topics I brought up. But then again, I’m sure it depends on the school.
Last but not least, admit if you don’t know something and say what you would do to figure it out! Good luck!