I can tell you in my hospital that there are 2 FNP's (just graduated) working in the intensive care unit for open heart patients and 1 acute care NP with NO ICU experience! They follow these pts POD 1 thru DC, and seem to be doing a good job. So, I think anything goes! When I scan the Michigan job market I have found that the job requirements are for a certified NP. They are not asking for a specific type as in Acute care NP, family NP, etc.