Best practice guidelines are systematically developed statements designed to assist nurses working in partnership with persons and their families to make decisions about health care and services (Field & Lohr, 1990). This nursing Best Practice Guideline (BPG) is intended to replace the RNAO BPGs Screening for Delirium, Dementia and Depression in Older Adults (2010b) and Caregiving Strategies for Older Adults with Delirium, Dementia and Depression (2010a).