NLE Disaster Nursing & Crisis Response — Disaster Nursing & Emergency PreparednessSummary

A disaster is any event that overwhelms local resources and capacity to respond, causing damage, destruction, and human suffering. Disasters are classified as natural (typhoons, earthquakes, volcanic eruptions, floods, tsunamis, landslides, droughts) or man-made/technological (industrial accidents, chemical spills, fires, transportation crashes, structural collapse, terrorism, armed conflict). Understanding this distinction is essential for hazard mapping, risk assessment, and tailored response protocols.

Disaster management is a continuous, overlapping cycle—not a single event. Phase 1: Mitigation (before disaster)—actions to prevent or reduce impact (hazard mapping, building codes, land-use planning, structural reinforcement, mangrove projects, family preparedness education). Phase 2: Preparedness (before disaster)—planning and readiness (developing disaster plans, conducting drills, training responders, stockpiling supplies, establishing warning systems). Phase 3: Response (during and immediately after)—saving lives and preventing harm (search and rescue, triage, evacuation, shelter establishment, meeting immediate needs). Phase 4: Recovery (after response, longest phase)—restoring function and services (infrastructure rebuilding, mental health care, disease surveillance, lessons-learned analysis). This cycle drives all nursing and community health actions.

In routine nursing, the goal is optimal care for the individual patient—maximum benefit for that person. In disaster nursing, the goal fundamentally shifts to the greatest good for the greatest number. Resources are finite. In a mass-casualty event, this means that the sickest patients (BLACK/expectant, those unlikely to survive even with maximal care) do not receive intensive treatment; instead, those resources are directed to RED (immediate–salvageable) victims who are likely to survive with intervention. This is an ethical reorientation that many nurses find conceptually challenging.

START is the gold-standard adult mass-casualty triage system. The sequence is: (1) Ambulation assessment—call out for anyone who can walk to move to a safe area; all walkers are tagged GREEN (minor/delayed care) and reassessed later. (2) For non-walkers, assess three parameters in strict order (RPM): Respirations—if not breathing, reposition/open airway; if still not breathing → BLACK (deceased/expectant); if breathing only after airway opening or RR >30 → RED (immediate); if RR ≤30, proceed. Perfusion—check radial pulse or capillary refill; if radial pulse absent or capillary refill >2 seconds → RED; if adequate, proceed. Mental status—give simple command ('squeeze my hand'); if cannot follow commands → RED; if can follow → YELLOW (delayed). Each victim is assessed in <60 seconds. Four colour-coded categories result: RED (Priority 1–immediate–salvageable, treated first), YELLOW (Priority 2–delayed–stable but serious), GREEN (Priority 3–minor–walking wounded), BLACK (Priority 4–expectant/deceased–comfort care only).

RED (Priority 1–Immediate): Life-threatening but salvageable injuries requiring intervention now—airway compromise, uncontrolled major bleeding, shock, RR >30, absent radial pulse or capillary refill >2 seconds, altered mental status (cannot follow commands). RED victims are treated first. YELLOW (Priority 2–Delayed): Serious but stable injuries that can wait a short time without threat to life or limb—stable fractures, moderate burns without airway involvement, moderate lacerations. Treatment can be delayed. GREEN (Priority 3–Minor): The 'walking wounded'—minor injuries, can wait longest, often able to assist. BLACK (Priority 4–Expectant/Deceased): Dead or injuries so severe that survival is unlikely even with maximal resources. In a mass-casualty setting, BLACK victims receive comfort care only (no aggressive treatment), so resources can be directed to salvageable RED victims. This allocation maximizes lives saved.

CBRN encompasses deliberate or accidental releases of hazardous agents causing mass casualties. Chemical: Nerve agents (sarin—treated with atropine and pralidoxime), blister agents, choking agents, cyanide (blood agents). Rapid onset; priority is decontamination and antidote administration. Biological: Pathogens (anthrax, plague, smallpox) or toxins (botulism). Delayed onset; recognition often through surveillance of unusual illness clusters; priority is isolation, infection control, prophylaxis/vaccination, and public health reporting. Radiological: Dispersal of radioactive material ('dirty bomb') causing contamination. Nuclear: Detonation causing blast, thermal, and radiation injury. Overarching priorities: (1) Protect the responder first (PPE—incapacitated nurses help no one). (2) Decontaminate before entering treatment area to prevent secondary contamination. (3) Follow incident command structure. (4) For radiation exposure, apply time (minimize exposure), distance (maximize from source), and shielding. (5) Treat immediately life-threatening conventional injuries before radiation effects. (6) Potassium iodide protects the thyroid from radioactive iodine.

RA 10121—Philippine Disaster Risk Reduction and Management Act of 2010—shifted national policy from reactive disaster response toward proactive disaster risk reduction and management (DRRM). It established the National Disaster Risk Reduction and Management Council (NDRRMC), which coordinates across agencies and mandates DRRM councils and offices at regional, provincial, municipal, and barangay levels. The Incident Command System (ICS) provides the standardized command-and-control structure for multi-agency response. The Department of Health (DOH) leads health-sector response through Health Emergency Management systems and pre-positioned response teams. Community-level readiness—barangay disaster plans, evacuation centres, early-warning systems, family go-bags—is central given frequent Filipino exposure to typhoons and earthquakes.

Disasters inflict psychological as well as physical harm; survivors may develop acute stress reactions and later PTSD. Psychological First Aid (PFA) is the evidence-based immediate psychosocial support—it is not formal therapy and does not force 'debriefing' or trauma recounting (debriefing is no longer recommended as a routine early intervention). PFA core actions: Look—observe for safety, urgent needs, and serious distress. Listen—approach distressed individuals, ask about needs and concerns, listen without judgment. Link—connect people to basic needs and services, accurate information, loved ones, and social supports. PFA principles: promote safety, calming, self- and community-efficacy, connectedness, and hope. Meet basic needs first (water, food, shelter, safety), provide accurate information, reunite families, protect from further harm, and refer severe reactions for professional mental health care. Responders' own mental health matters—manage fatigue, burnout, and vicarious trauma.

The Incident Command System is a standardized organizational structure for managing emergency response, enabling clear command, unified communication, and coordinated action across multiple responding agencies (police, military, firefighters, health, logistics, public information). The ICS typically includes: Incident Commander (overall authority), Operations (response activities—search, rescue, treatment), Planning (situation assessment, resource tracking), Logistics (supplies, personnel, transport), Finance/Administration (costs, contracts). All responding agencies align under a single ICS structure, preventing duplication, confusion, and gaps. Nurses report to the Health Operations Officer or similar health-sector lead within the ICS.

Core nursing actions during disaster response: (1) Scene safety and personal protection first—do not become a casualty; use PPE and follow incident command. (2) Triage rapidly using START; prioritize RED (immediate–salvageable) for treatment. (3) Re-triage frequently, as conditions change. (4) Address airway, breathing, circulation, and major hemorrhage in the RED group. (5) Decontaminate in CBRN events before treatment, except for immediately life-threatening problems. (6) Prevent secondary disasters in shelters—safe water, sanitation, infection control, and communicable-disease surveillance. (7) Provide psychological first aid; identify and refer severe psychological reactions. (8) Document and communicate within the command structure; support the recovery phase.

At the community level, preparedness includes barangay disaster plans, evacuation centres, early-warning systems, and family education. Nurses teach families to prepare a disaster/emergency go-bag containing: water (2 liters per person per day for 3+ days), non-perishable food, essential medications, first-aid supplies, flashlight and batteries, whistle, important documents (IDs, medical records, insurance), phone chargers. Families should have a communication plan (meeting point, out-of-area contact number—local lines may be down) and know evacuation routes and the location of the nearest evacuation centre. Post-disaster health protection: boil or treat water, practise hand hygiene, prevent mosquito breeding (dengue/leptospirosis risk after floods), and know when to seek care.

Mitigation and Preparedness (before disaster): Nurses educate communities, develop disaster plans, conduct drills, stock supplies, teach family preparedness. Response (during/immediately after): Nurses perform rapid triage (START), provide emergency treatment, establish safety and shelter, manage communicable-disease surveillance. Recovery (after response): Nurses support rebuilding, provide ongoing physical and mental health care, conduct disease surveillance, participate in evaluation for future improvement.

Understanding what constitutes a disaster (natural vs. man-made) enables hazard mapping and risk assessment (vulnerability analysis of health facilities, population groups, infrastructure). Risk assessment informs mitigation planning—e.g., if a barangay is typhoon-prone, mitigation includes early-warning systems, evacuation routes, and shelter preparation. If earthquake-prone, building codes and structural reinforcement. The chain of understanding progresses from definition → classification → assessment → planning.

When a mass-casualty incident occurs, START rapidly stratifies victims into four colour-coded categories. Each category receives a priority ranking for treatment: RED first (immediate–salvageable), YELLOW second (delayed–serious but stable), GREEN third (minor–walking wounded), BLACK fourth/not treated (expectant–comfort care only). This priority order determines how resources (personnel, medications, equipment, transportation) are allocated. The goal is to maximize lives saved, not to provide maximal care to individuals.

CBRN events require a cascade of nursing actions: (1) Recognition—identifying the hazard (chemical, biological, radiological, or nuclear). (2) Protective measures—responder safety (PPE, distance, shielding). (3) Decontamination—before victims enter treatment area. (4) Specific interventions—nerve agent antidotes (atropine, pralidoxime), isolation and prophylaxis for biological agents, potassium iodide for radioactive iodine exposure, management of blast/thermal/radiation injury.

RA 10121 established a hierarchical DRRM structure (NDRRMC at national level, regional/provincial/municipal/barangay councils) and mandates the use of the Incident Command System for multi-agency coordination. At the barangay level (the community where nurses often live and work), preparedness includes disaster planning, evacuation centres, early-warning systems, and family education. Nurses participate at all levels—facilitating barangay planning, staffing evacuation centres, educating families.

Disasters cause both physical injury and psychological distress. While START triage addresses physical severity, Psychological First Aid addresses emotional and psychological needs. Both are essential. PFA principles (Look, Listen, Link) complement emergency medical response, and mental health referral systems must be integrated with disaster response planning.

When families prepare go-bags, establish communication plans, and know evacuation routes (family preparedness activities), they reduce their own vulnerability and increase the likelihood of survival and faster recovery. This is a mitigation/preparedness action at the household level that reduces the overall burden on disaster response systems.