Complex and emergency care
Emergency and disaster triage
NCLEX disaster chapter: everyday versus mass-casualty triage, START and color tags, reverse triage, decontamination order, and scarce-resource decisions.
ClesialReviewed by Sophia Bennett, RN
Contents7 sections
Disaster triage flips the usual hospital habit. With unlimited staff you save every salvageable life. With a bus crash and three nurses you tag for the greatest good. Single-client ABC priorities still apply in normal care and are taught in Priority frameworks. This chapter owns mass-casualty tagging and decontamination order.
Everyday triage versus disaster triage
In a normal emergency department, the unstable airway or stroke gets resources immediately even if a sprained ankle waited longer. That is everyday triage: unstable before stable, ABCs win. In a mass-casualty incident, demand exceeds supply. You spend minutes on clients who can survive with quick intervention and you may categorize others as expectant when nothing you have will change the outcome.
| Setting | Goal | Rule of thumb |
|---|---|---|
| Usual ED | Best care for each individual | Unstable before stable; ABCs win |
| Mass casualty | Greatest good for the greatest number | Tag colors; scarce minutes on salvageable lives |
| Hospital surge | Make room for incoming critical clients | Reverse triage: move stable inpatients out per plan |
That feels ethically harsh. Exams test whether you can hold both truths: dignity for everyone, resources for the salvageable many. A black tag in disaster is not cruelty theater. It is an honest resource call, and comfort care is still nursing when possible. Applying everyday ED logic to a disaster stem (sending the only OR to an unsurvivable injury while three reds bleed out) is the classic trap.
Color tags and START logic
Most NCLEX stems use a four-color system. Red (immediate) needs life-saving intervention now: airway obstruction you can open, severe bleeding you can control, breathing compromise that responds. Yellow (delayed) is serious but can wait hours: stable fractures, controlled bleeding. Green (minor) can walk and wait. Black (expectant/deceased) is not breathing after basic airway opening or has injuries incompatible with available care.
| Tag | Meaning | Examples as tested |
|---|---|---|
| Red | Immediate | Obstructed airway you can open; arterial bleed you can stop; RR extreme with salvage potential |
| Yellow | Delayed | Stable long-bone fracture; wounds needing surgery later; serious but not crashing |
| Green | Minor / walking wounded | Can walk to a collection area; scrapes, minor injuries |
| Black | Expectant / deceased | Apneic after airway open; unsurvivable injuries when resources are gone |
START-style first pass
- Can they walk? Green (clear the scene).
- Not breathing: open airway. If still apneic, black.
- Breathing but RR extreme, no radial pulse pattern, or cannot follow commands: red.
- Others injured but stable enough to wait: yellow.
- Re-triage as resources arrive. Tags can change.
Exact START cutoffs vary by protocol version on exams. The principle does not: spend seconds sorting, treat reds, re-triage as resources arrive. A green client who later decompensates can be up-tagged. Walking wounded are cleared first not because they matter less forever, but because moving them reveals the quiet victims still on the ground.
Safety
Do not drag a black-tag expectant client into the only OR while three reds are drowning in blood you could stop. That is the disaster distractor.
Decontamination and nurse role
Chemical and radiation exposures contaminate everything they touch. When the stem says a factory spill, pesticide cloud, or dirty bomb pattern, decontaminate (remove clothing, wash as protocol) before or at the threshold of the clean treatment area so one client does not poison the department. Wear appropriate PPE. Your safety keeps the workforce intact.
| Zone idea (as tested) | Nursing focus |
|---|---|
| Hot / contaminated | PPE; remove clothing; gross decontamination per protocol |
| Warm / transition | Continue wash; do not track contaminant inward |
| Cold / clean treatment | Standard emergency care once clients are clean enough to enter |
- Remove clothing carefully. Most contaminant often leaves with the clothes.
- Flush skin and eyes as protocol. Protect responders from runoff.
- Life threats (massive hemorrhage, airway) may need simultaneous action per protocol, still without contaminating the whole ED.
- Follow incident command. Freelancing creates chaos.
- Document tags and times when the system allows. Communication is part of triage.
- Psych first aid for walking wounded matters after the reds are moving. Panic spreads.
Reverse triage during hospital surge means discharging or transferring stable inpatients to free critical beds. It feels backward if you only know everyday ED logic. The stem is asking whether you can free capacity for the incoming wave. Fire, evacuation, and RACE/PASS device skills sometimes appear beside disaster stems. Treat them as parallel safety algorithms rather than rewriting triage colors. Poisoning of a single child is not disaster triage. That lives in Pediatric acute emergencies.
Priority map
| Situation | First move |
|---|---|
| Usual ED, one crashing airway | Everyday ABC: treat the unstable first |
| Bus crash, many victims | Sort with tags; treat reds; clear greens |
| Apneic after airway open (disaster) | Black/expectant when resources gone |
| Arterial bleed, talking | Red: control bleed now |
| Chemical on clothes at ED door | Decontaminate before clean entry |
| Surge needs beds | Reverse triage: discharge/transfer stables per plan |
Revision
Must know
- 1Everyday ED triage treats the sickest unstable first. Mass-casualty triage maximizes survivors when demand exceeds resources.
- 2Common tag map: red = immediate, yellow = delayed, green = minor/walking wounded, black = expectant/dead.
- 3Black/expectant in disaster: apneic after airway open, or unsurvivable injuries when resources are gone. Not the same as giving up in a normal ED with full staff.
- 4Green walking wounded: move them out of the way so you can find reds. They are not ignore forever.
- 5START-style logic (as tested): walking? green. Breathing? open airway; still not breathing? black. Extreme RR, poor perfusion, or cannot follow commands? red. Otherwise yellow.
- 6Decontaminate chemical or radiation exposures before they enter the clean hospital when feasible. Protect staff and other clients.
- 7Life-saving interventions in the hot or warm zone follow protocol. Do not drag contamination into the clean ED to start comfort care first.
- 8Nurse role: follow the incident command / triage officer plan. Do not invent a private hospital in the parking lot.
- 9Single-client ABC prioritization still lives in Priority frameworks and acute chapters. This page owns scarce-resource tagging.
Memory hooks
Red now, yellow soon, green walk, black gone
Immediate, delayed, minor, expectant: the four-color disaster map.
Walking = green first pass
If they can walk to you, clear them aside and hunt for who cannot.
Dirty outside, clean inside
Decontaminate before the clean treatment area so one client does not poison the department.
On the exam
How it's tested
Stems give four disaster victims and ask who is red versus black, whether everyday sickest first still applies, or whether to decontaminate before ED entry. Distractors apply normal ED sickest always first to a black-tag expectant client when resources are gone, or send contaminated clients straight into triage.