Every hospital or network is probably looking for something different in their interview process.
Some likely look for a candidate...
- who is intelligent, "sharp", but knows that he/she doesn't know it all
- who admits to not knowing the answer to clinical questions (but can tell how you'd find out the answer), rather than trying to BS your way through it
- who can express enthusiasm for critical care
- who obviously CARES for the patient and their family members
- who shows that teamwork is important to them
- who can discuss the most memorable pt they've encountered (including the disease process & treatments observed)
- who has some decent questions to ask the interview panel (NOT about starting salary, benefits, vacation time,...)
- who knows basic facts about the organization for which they're interviewing
- who has a near/long term goal compatible with the organization's needs (for example - it's probably not wise to admit that you want to be a flight nurse or CRNA or who-knows-what when you're just starting out...the department might label you as somebody who will just work 1-2 years, then move on to "bigger & better things."
...or any combination of the above...
Unfortunately, some might also look for candidates who had a 4.0 GPA, were at the top of their class, and couldn't walk & chew gum at the same time.
It might not hurt if you asked to "shadow" one of the company's ICU nurses before your interview, if that's possible. If you can swing this, treat your shadowing day as a day long interview.