A mother brings her 3-month-old child into the emergency department. The child is listless with dry mucous membranes, tenting of the skin on the forehead, a depressed fontanel, and a history of...

A mother brings her 3-month-old child into the emergency department. The child is listless with dry mucous membranes, tenting of the skin on the forehead, a depressed fontanel, and a history of vomiting and diarrhea for the last 36 hours. In what order from first to last should the nurse implement the primary care provider's prescriptions?