The triage nurse must demonstrate the capacity for critical thinking in environments where available data is limited, incomplete or ambiguous. (College of Emergency Nursing Australasia, 2007). Ibrahim, (2005) and Afifi, (2006) reported that, there was no triage system in the emergency department at EL-Manial University hospital in Egypt as well as nurses role is not of significant importance, in which the role of the nurse concerned only with writing reports and implementing physicians orders. Therefore, the previous studies recommended the developing of the triage nurse role to improve...