Australian disaster triage: a colour maze in the Tower of Babel.

BACKGROUND The objective of this study was to review the systems of disaster triage used by Australian State and Territory ambulance services and compare their triage taxonomy, methodology and documentation with the Australian Council on Health Care Standard's (ACHCS) National Triage Scale, which is used in all Australian hospital emergency departments. METHODS A postal survey of the State and Territory ambulance services during October 1996 was conducted. Details of the mass casualty incident (MCI) triage systems were then compared with the ACHCS National Triage Scale. Colours specified or used on a triage tag were checked for compliance with Standards Australia AS-2700 1996 Colour Standards for General Purposes. Participants consisted of those State and Territory ambulance services which would be the initial emergency medical service responders in the event of an MCI in an Australian capital city, and the ACHCS. The main outcome measure was the homology between the respective triage taxonomies, methodologies and documentation systems. RESULTS All eight State and Territory ambulance services used a numerical and colour coded system to indicate triage priority during an MCI. There were five different triage tag designs for triage documentation, six different triage taxonomies and five different triage methodologies with minimal homology between the different triage systems and the National Triage Scale used in hospitals. Only two ambulance triage systems specifically triaged emotional disturbance. Several triage tags and their patient attachments were made from perishable materials and are thus likely to fail under field conditions. CONCLUSION The multiplicity of triage systems used within Australia will result in avoidable confusion, thus hindering the medical response to an MCI, especially for incidents near State or Territory borders. There is little evidence to support the continued use of triage tags. Australia needs to develop a uniform system of patient triage as a national priority.

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