Hello futurenurses!
Goodluck on your final! Wear bright colors to stim your brain, watch out for caffeine and carbs, but make sure you eat.
Sorry about bogging you guys down with a lot of questions that you don't need right now. I am studying for my final too and did not have enough time to thin them down for you. Just ignore the ones you don't need. These are just examples to show you all of the different directions that you might have to think.

Here is on more that might interest you. Very short.
http://deltarnstudents.blogspot.com/2005/04/test-fluids-and-electrolytes.html