Sorry, I didn't mean to hijack the post. I found it insightful, and timely.
Any med you're not familiar with, especially before you're off orientation, have your preceptor or charge nurse go with you. Cardiac meds work quickly and can be downright scary if you're not being carefully guided while giving them.
I think a little fear in general will keep you on your toes. It had done so for me.
I also ordered a book from amazon
.com called Nursing Emergency Secrets. It isn't very huge and is written in plain, readable language. I'm just starting it.
The advice about asking the docs what's going on is also very good advice. And taking yucky patients. They are great learning experiences. I have felt overwhelmed by all the knowledge/learnimg and all of the different skills we do in the ER.