Book excerpt: Face the demands of the emergency nursing certification exam (CEN) with the self-assurance that only the right kind of preparation can bring, with the newly updated Lippincott® Q&A Certification Review, 3rd Edition. This ideal study guide offers 175 multiple-choice questions, divided evenly among body systems and written in the same style and similar content as those created by the Board of Certification for Emergency Nursing (BCEN). Offering end-of-chapter answers and rationales plus two end-of-book practice exams, this is the optimal study guide for all RNs preparing for the CEN exam.