I had just started working in the ED. Was a brand new nurse that got thrown into it by desperation. I never got a really good orientation, etc.
I was giving a pt. Demerol/Vistaril combination and pushed the Demerol and then started to give the Vistaril IV. I realized what I was doing and stopped (probably had only gotten a very small amount of it). I went to the director of the ED at the time (a very small, little man

) and told him what happened and asked what I should do. He yelled.
"get the crash cart!!!!!!"

While I was passing out, he started to snicker.
Of course nothing happened, we filed an incident report, etc. Now that I look back it was hysterical, but at the time all I could think was that I had just killed someone.