[Revisions to the Canadian Emergency Department Triage and Acuity Scale implementation guidelines].

There has been widespread implementation of the Canadian Emergency Department Triage and Acuity Scale (CTAS) across Canada since it was introduced in 1999. This consensus document, developed by the CTAS National Working Group (NWG) of nurse and physician leaders in emergency department (ED) triage, continues to be viewed as a dynamic document that requires modification over time as experience is gained in its application. This article presents the first major modification to the CTAS.