Yes, I've noticed that some nurses are mean to people who are brought in for attempted suicides. (I became suicidal while on the ward.) I had a fellow patient even ask me why I thought the nurses were being mean to her, and that's what I told her. I just don't get it.
It's like we intentionally meant to somehow make it hard for the nurses. In some cases they'd probably be suicidal, too, if they were going what we were going through.