Is there an equal distribution of questions on the exam?

No, there is not an equal distribution of cardiac, respiratory, neurological, etc. questions on the exam. In fact, you may take the exam on the same day as one of your classmates, and you'll receive different questions. One test may have 6 questions on hypertension, another exam may only have 2 questions. It's the luck of the draw. Be prepared to answer questions in random order on a variety of topics.