I need help! My test is next Monday and it is supposed to be the hardest of the semester! I am learning about F&E and our professor told us to just focus on potassium and sodium. I am having trouble understanding Hypo/hypernatremia and hypo/hyperkalemia. I heard from previous nursing students that the F&E tests have scenario questions and that I really need to be on top of my game for this. I need to know symptoms, causes, interventions and all the important things of these electrolytes. Does anyone know of any valuable resources that help in understanding those two electrolytes? I have looked in many places and still cant seem to grasp the concept. Also does anyone know of any good websites that have practice questions so I can prep myself into what they are looking for in the questions?