When a patient is transferred from a bed to a wheelchair or from a wheelchair to a bed, proper techniques must be followed to prevent injury. Body mechanics is moving and positioning the body in ways that prevent injury to oneself and to others. Patient transfers are an aspect of body mechanics.
Step away from Christina, apologize and ask her to talk about it. I mean that's not personally what I would do per say, but I'm sure that's the answer they're looking for
