I agree with most of the replys talk to your nurse manager and your preceptor. my first preceptor did a similar thing to me, she handed me the keys and said let me know if you need any help, I was mortified but when we were through orientation I felt comfortable on my own where as some of the girls who only had two or three patients didn't. I asked her many questions and she had to come to my aide a few times. but still to this day 14 years later I have no problem asking for help when I need it or asking questions if I don't know something and I don't mind offering my help either.