Yeah, I was about to say SAMPLE if no one had gotten to it first. It really only applies to first contact (EMS or ER), and isn't all that relevant on the floor, however.
I'm studying for my Emergency Nursing exam, and this helps me to put my mind in order for answering questions. For other areas, it acts as a starting point. I get freaked out by exams, and these sort of things help me to put my thoughts in order. It won't be the only thing I rely on though.