What is the etiology, pathogenesis, clinical manifestations, and treatment of dehydration?

What is the etiology, pathogenesis, clinical manifestations, and treatment of dehydration? What education and interventions do you provide to geriatric patient’s that are dehydrated (they usually do not like to drink too much water because they are afraid they won’t make it to the bathroom in time)? What steps are you going to do as a nurse to stay hydrated and keep your kidney’s functioning properly when working on that crazy thing called “the floor”? Do you think most nurses on “the floor” are dehydrated?