being an ER new grad is a tough job to start in, I know from experience, but I have had a very positive experience. anywhere nurses work, nurses make mistakes because nurses are human and i think everyone should try and remember that. My preceptor was amazing and i thank god for for 4 monthes with her, but honestly it gets really old constantly being criticized (especially when you are trying to get your work done and your preceptor would rather speak to you about how you aren't going fast enough). but yes, obviously you don't need to wait for the MD to order an IV on a patient who clearly needs IV meds or a route for meds incase something unplanned happens.