David Tilton RN, BSN is the staff educator at Western State Hospital, DSHS, State of WA. He has twenty years of nursing experience in the areas of ICU, CCU, Post Anesthesia Recovery, Sub-Acute, Long Term Care, and, Forensics. He has also served as a freelance reader / reviewer for some of the major medical publishing houses, Saunders, Lippincott, Mosby, Harcourt, over the last fifteen years.