I am going to say that you are starting out correctly. You have to learn the facts. And, if memorization of your notes is the way you do that, then that is what you need to do. However, from the last nursing test(s) you took you also know that learning the facts isn't enough. Nursing tests generally have what are called "application" questions on them. They are trying to test your critical thinking skills. They are trying to see if you can determine a best action to take when you are given a situation and left on your own to figure out what is the most important thing to do next. This requires processing a number of things in your mind.
- Facts
- Knowledge of a medical disease (signs and symptoms)
- Complications of medical diseases
- Knowledge of how a medical disease is treated
- Complications of the medical care that can occur
- Nursing process (the 5 steps)
- Priority
That's a lot to consider for one problem on a test out of, what, 50 questions? Basically, you end up doing a mini-care planning for each application problem. As much as students hate writing care plans, it has to be understood that the written care plan is nothing more than the physical documentation of the thinking process that should be going on in our minds every time we are presented with a patient problem. Our thinking process is just faster than our pens (or, computer keyboards). Many of these problems boil down to what point in the nursing process you are at, so you need to know those five steps: assessment, the problem identification along with formulation of goals and outcomes, planning the care which includes determining nursing interventions, implementation and evaluation. And, remember, it re-cycles, so if some nursing intervention hasn't worked you go back through the steps of the nursing process again and re-work them to come up with a new plan of action.
Then, the part that trips most people up on tests is that sometimes the BEST answer is not one of your answer choices. Instructors play around with your minds by taking that wonderful logical processing and throwing a monkey wrench in it. Your mission, student nurses, is to figure out how that monkey wrench has now messed up the logical process and get back on the road to the logical conclusion. That is where your knowledge of the nursing process helps. You have to mentally ask yourself, "if I already did this, then what would the next logical step be?", or, "what are all the complications of this drug and is this problem the patient is having a side effect of the drug?" and look for the answers that way. Do you see what I am getting at. You are not only having to know the new information for your tests, but also all the other information that came before it.
Many students find using a book with practice NCLEX questions in it helpful in learning to think this way. It might help you to make a list of the things I just put above this and see if it doesn't work to lead you to the correct answers on the problems you got wrong on previous tests to show you that this is the way to get to the right answers. And, then memorize the process. I guarantee you that as a practicing professional nurse you will need to master this thinking skill in order to be successful in a career an RN. You will learn it by barely passing tests in school or by trial and error on the job.
Here is a current thread you should check out that addresses this very similar thing:
http://allnurses.com/forums/f50/nursing-101-question-how-would-you-answer-187954.html