 The Certified Pediatric Emergency Nurse (CPEN®) designation is applied to a registered nurse who has demonstrated expertise in pediatric emergency nursing by passing a computer-administered examination given jointly by the Board of Certification for Emergency Nursing (BCEN) and the Pediatric Nursing Certification Board (PNCB).The certification exam first became available on January 21, 2009, and was accredited by ABSNC in May 2015.The certification is valid for four years, and can be renewed either by passing another examination, by completing 100 contact hours (continuing education) in the specialty, or by completing 1,000 clinical practice hours and 40 contact hours in the specialty.