I started my first PICU job 20 years ago next week and I STILL have those dreams! Most of the time I know I'm dreaming, but it doesn't make them any less bothersome. I remember one dream I had (not all that long ago either) that had me questioning my sanity. I was assigned to one of our chronically-critical patients in this dream, a child I'd looked after many times. In my dream I had a committee meeting in the early afternoon and handed off to another nurse to cover my patient while I was gone. I went to my meeting, as I'd done dozens of times before, and at the end of the meeting I just walked to my car and went home. I didn't even realize I hadn't gone back to the unit until, in my dream, I woke up in my own bed many hours later thinking, "OMG, I didn't tell Julie about little Andy's feeds!" I keep my car keys in my work tote so I knew while I was dreaming that I WAS dreaming, but I was still a little shaken when I woke up for real.
Other dreams feature being late for work (like 6 hours late!) because I couldn't decide which scrubs
to wear, going to work in shorts and a t-shirt and not even noticing the strange looks I get, walking onto the unit and not recognizing anybody or anything there, making ridiculous med errors and other silly things. Only rarely do I dream about resuses or horrific events. And oddly, I find those dreams easier to reconcile afterward.
What you're experiencing is not at all uncommon, nor is it a sign of anything serious. What you're doing is consolidating all your new learning and experiences into your memory banks. Normal. Alarming and uncomfortable but normal.