- Now endorsed by ACORN - Aligns with the 2016 ACORN and PNC NZNO Standards - Reflects the latest national and international standards, including the NSQHS Standards, the new NMBA Standards for Practice for Registered and Enrolled Nurses and the WHO Surgical Safety Checklist - Includes two new chapters: The perioperative team and interdisciplinary collaboration and Perioperative patient safety - Supporting online resources are available on evolve.