Take care of YOURSELF first!!
Bottom line and cruel truth here: Hospitals look at nurses as expendable objects....they really don't care if you hurt yourself on the job.
SO YOU HAVE TO CARE AND LOOK OUT FOR #1!!!
NEVER put yourself in danger, or lift/move unsafely...it is not worth it.!!
Call a code overhead, if you have to, to get more help, but don't cut corners physically with heavy or dangerous, combative patients. DON't let someone else coerce you (a doc , a family member, or the supervisor) into doing something you are uncomfortable with physically. Err on the side of caution for yours and your coworkers' sakes.
You're all you got. Protect your back and your weight bearing joints....nursing is EXTREMELY hard work.