Mass Casualty, Disaster, and Special Operations Response
Disaster and mass casualty medicine shifts the goal from optimizing each patient to doing the most good for the most people. Know the incident command system: unified command, span of control, and the sections (operations, planning, logistics, finance/administration). Understand that EMS integrates into a larger command structure and that communication interoperability and common terminology are recurring themes.
Triage is central. Learn the logic of mass-casualty triage-rapid sorting by physiologic and mobility criteria into immediate, delayed, minimal, and expectant/deceased categories-and the key principle that in a true mass casualty, lifesaving interventions are limited and rapid movement to treatment areas matters more than scene treatment. Contrast this with routine triage, where each patient receives full care. Understand surge capacity, patient distribution across facilities, and the ethical framework of crisis standards of care (fairness, transparency, consistency).
Special operations and hazardous scenes add personal protective equipment, decontamination, and scene safety as gating decisions: you cannot treat until the scene is safe and patients are decontaminated. Recognize warm/cold zone concepts, tactical EMS supporting law enforcement, and the principle that provider safety precedes patient care.
Traps: applying routine one-patient-at-a-time care during a mass casualty; spending time on scene treatment instead of rapid extraction and distribution; skipping decontamination; confusing triage categories; and assigning command roles incorrectly (e.g., medical director taking operational command).
Rule of thumb: in mass casualty, sort fast, treat little, move many. Worked example: a bus crash with 20 patients and 3 ambulances - the answer is rapid triage, request additional resources and unified command, transport immediate patients first, and avoid scene treatment that delays movement.