For those of you with nursing experience, I was wondering what knowledge you rely on all the time at work. This would be info that comes up so often you know it cold, without ever having to look it up, and which most non-medical people wouldn't necessarily know. Anything from knowing that PRN means 'as needed' to normal WBC values to typical side effects of a medication you administer often.
I just thought it would be interesting to see what actual working nurses find necessary to know, and having a list like this might be a neat reference for nursing students and new nurses.