As of July 6, 2016, the CFRN has an updated exam (the content outline posted on the BCEN website). With this in mind, some of solid study materials I have seen mentioned for preparing for the exam are dated to 2009, 2011, ect. Granted many things in patient assessment and care remain universal, but with evolution in technology/best practice and updates to algorithms, should I be guarded in which study resources I use? If so, which are the best? I plan on testing at the end of this year and want to be ready - any insight would be greatly appreciated.