NERVES
I totally agree with the ear plugs and sleep mask. My roommate had a knee replacement surgery and was in a lot of pain. They checked on her hourly throughout the night. When the a lab tech came to draw blood in the morning she tried to wake me up but I didn't hear her because of the ear plugs. She had to shake me awake. I think she was surprised I had them in.
Funny thing though... She locked the railing up on the side of the bed when she was done and I didn't know how to get out so I had to call my nurse to get out and go to the bathroom!! No good when you are in a hurry ;)