3rd Edition CPEN Exam Review Book. Scott DeBoer, RN, MSN, CPEN, CEN, CFRN wrote the first available CPEN review book back in 2009 and he just keeps making it better and better! Unlike most textbooks or certification review books… this entertaining and informative review book is written in the way we really think and talk in the Emergency Department It includes over 1000 questions, and easy to read and remember material. The 2014 3rd Edition of this innovative review book is designed to reflect the updated Board of Certification of Emergency Nursing (BCEN) content outline for the Certified Pediatric Emergency Nurse (CPEN) examination. It will make the review of essential aspects of pediatric emergency nursing much simpler by offering multiple choice questions broken down into 11 chapters with easy to remember rationales. This engaging and informative review book offers a step-by-step approach to pediatric emergencies and is designed to review essential material for individuals preparing to take and pass the CPEN Exam.