Triage: How It Works in a Hospital - Verywell Health www.verywellhealth.com/medical-triage-and-how-it-works-2615132Private View Emergency department triage: This is used by hospitals when patients arrive at the emergency room. Incident (multicasualty) triage: This is used for any situation involving injuries to multiple people, such as in a motor vehicle accident. Disaster (mass casualty) triage: Similar to incident triage, this type involves injuries to a large number of people, such as after a terrorist incident or a ...