This book is a quick examination review for the Sleep Disorders Specialty (SDS) exam offered by the National Board of Respiratory Care (NBRC).This review is meant to be a quick review with key insight into concepts and ideas that are covered in the exam. The purpose of this exam review is to help you think the way the test-makers want you to think in order for you to pass the exam. Often times the real world and exam world don’t do things the same way and this book is meant to help you navigate the exam world long enough to pass it. This review guide is a quick, inexpensive exam review and should be used with other material to help pass the exam.