I happen to be an NRP regional instructor and I asked this very specific question to the NRP officials via email. The response I received, which for me makes sense, is there should be a policy in each hospital on which guidelines to use and where depending on the setup of the hospital, the staff education and their comfort level doing resuscitation using NRP or PALS recommendations. Bottom line, outside the delivery, and until new eveidence, you do the best you can with the method you feel you are most skilled.