A nurse is working in the emergency department when a mass casualty incident occurs. Multiple patients arrive simultaneously with varying degrees of injuries. What is the nurse's first priority in this situation?

In mass casualty incidents, the immediate priority is implementing the disaster management plan and initiating triage protocols to systematically assess and categorize patients based on injury severity and treatment urgency.

Core Nursing Explanation Key Concept Analysis: This question tests the fundamental principle of Disaster Nursing and the concept of Triage. In a mass casualty incident (MCI), resources (staff, space, equipment) are overwhelmed by the number of patients. The core goal shifts from providing immediate, comprehensive care to each individual to doing the greatest good for the greatest number of people. This is achieved through a structured, systematic approach.

Answer Rationale: Key Point! The nurse's first priority is to Implement the hospital's disaster management plan and initiate triage protocols. This action activates the entire emergency response system. The disaster plan provides the framework for roles, communication, resource allocation, and space management. Initiating triage (often using a system like START (Simple Triage and Rapid Treatment)) is the critical first clinical step to rapidly sort patients by severity (e.g., Immediate, Delayed, Minor, Expectant) and direct them to the appropriate care area. Without this organized system, chaos ensues, and the most critical patients may not be identified quickly.

Distractor Analysis:
Watch out for confusion! Option ②, "Prepare the trauma bay for the most critically injured patients," is an action that occurs after triage. You cannot know who the "most critically injured" are until triage is performed. Preparing a single bay in anticipation is not the systematic first step.
Option ③, "Contact additional nursing staff," is a crucial action but is typically a component of activating the disaster plan. The plan will specify who calls for additional staff (e.g., the charge nurse or hospital supervisor). The first action is to activate the overarching plan that coordinates all such responses.
Option ④, "Gather emergency supplies and medications," is also important preparatory work. However, in the initial moments of an MCI, the priority is establishing command, control, and the patient sorting system. Gathering supplies is a supportive action that should happen concurrently as part of the plan's activation, but it is not the overarching first priority.

Related Concepts: The principles of triage in an MCI differ from daily emergency department triage. In daily triage, the sickest patient is seen first. In an MCI, resources are limited, and the goal is to maximize survival. A patient requiring extensive, time-consuming resources with a low chance of survival may be triaged as "Expectant" (or black tag) so that resources can be directed to those with a higher likelihood of survival with immediate intervention. Concept Summary • Mass Casualty Incident (MCI): An event that overwhelms local healthcare resources due to the number and severity of casualties. • Disaster Management Plan: A pre-established protocol that outlines roles, communication chains, resource mobilization, and facility setup for emergency response. • Triage: The process of sorting patients based on the urgency of their need for care. In MCIs, common systems are START (Simple Triage and Rapid Treatment) or JumpSTART (for pediatric patients). • Triage Categories: - Red (Immediate): Life-threatening injuries but likely to survive with prompt treatment. - Yellow (Delayed): Significant injuries but not immediately life-threatening. - Green (Minor): Walking wounded with minor injuries. - Black (Expectant/Deceased): Deceased or injuries so severe that survival is unlikely given available resources. Side-by-Side Comparison!

Scenario	Primary Goal	Nurse's First Priority
Daily Emergency Department	Provide comprehensive care to each patient in order of acuity.	Perform rapid primary assessment (ABCs) of the individual patient who appears most ill.
Mass Casualty Incident (MCI)	Do the greatest good for the greatest number; maximize survival.	Activate the disaster plan and begin systematic triage of all patients to categorize them.

Anatomy, Physiology & Pharmacology Points • While specific anatomy isn't the focus, triage in an MCI uses rapid physiological assessments: - Respiratory Status: Can the patient walk? If not, check respirations. If absent, open airway. If still absent → Black tag. - Perfusion: Assess capillary refill (>2 seconds indicates poor perfusion) or radial pulse. - Mental Status: Can the patient follow simple commands? (AVPU scale: Alert, Voice, Pain, Unresponsive). Memory Tips • Acronym: ID the Plan First! In a Disaster, Implement the Plan First. • Mnemonic for MCI Mindset: "Sort, Don't Treat First." Your first job is to sort (triage) everyone, not to start treating the first patient you see. High-Frequency NCLEX Topics Disaster preparedness and triage are Core public health and safety topics. The NCLEX-RN often tests the priority action in an MCI, emphasizing the nurse's role in initiating the system (plan/triage) over individual clinical tasks. Questions may also ask about specific triage tag colors based on brief patient scenarios. Watch Out for Question Variations! • Instead of "first priority," the question may ask: "Which action should the charge nurse delegate first?" (Answer: Delegate a nurse to the triage area). • The scenario may describe a specific triage finding (e.g., "apneic after positioning airway, capillary refill > 4 sec") and ask for the correct tag color (Black). • It may shift to post-triage: "After triaging 10 patients, which patient should be transported to the treatment area first?" (Answer: A Red-tagged patient).

Nursing Clinical Practice Guide Clinical Scenario: You are the charge nurse on a quiet Tuesday afternoon when EMS radios in: "Multi-vehicle pile-up on the highway, 15+ patients, ETA 10 minutes. Injuries unknown." Your ED currently has 3 nurses and 10 empty beds.

Nursing Intervention Strategy: 1. Assessment & Activation: Immediately announce "Code Triage" or "MCI Activation" per hospital policy. This alerts the entire hospital. Grab the disaster clipboard/plan. 2. Planning & Implementation: • Assign Roles: Designate one nurse as the Triage Officer (to tag patients at the entrance). Designate another as the Treatment Area Manager. You, as charge nurse, assume the Incident Commander role for the ED sector. • Set Up Physical Space: Direct staff to quickly create clear areas: Triage Zone, Red Treatment Area, Yellow Holding Area, Green Minor Care Area, and a separate area for expectant (Black) patients. • Communicate: Use the disaster plan's communication tree to call in off-duty staff, notify the lab, blood bank, and OR. 3. Patient Safety and Precautions: • Triage Accuracy: The triage nurse must be experienced and stick strictly to the algorithm (e.g., START: 30-second assessment per patient). Do not get drawn into providing treatment during primary triage. • Resource Conservation: In an MCI, you may need to use supplies sparingly and creatively (e.g., using magazine pages as splints). • Psychological First Aid: Assign a staff member to manage family inquiries and provide clear, calm directions to walking wounded.
Nursing Procedure & Medication Flow • Triage Procedure (START): For each non-ambulatory patient: 1) Assess Ability to Walk (If yes → Green tag). 2) Assess Respirations (If none → position airway. If still none → Black tag. If >30 or 2 sec → Red tag). 4) Assess Mental Status (Unable to follow simple commands → Red tag). If passes all, tag as Yellow. • Medication: In the initial chaos, medication administration is deferred until patients are in the treatment area. The priority is establishing IV access and hemorrhage control for Red-tagged patients. Pain medication for Greens and Yellows is a lower priority.
A Word from Your Senior Nurse "Disaster nursing feels overwhelming, but that's why we drill and have plans. Your number one job in those first chaotic minutes is not to be a hero for one patient, but to be a leader who creates order from chaos. By calmly activating the plan and starting triage, you become the linchpin that allows your entire team to function effectively and save the maximum number of lives. On the NCLEX, they are testing your ability to see the big picture and prioritize system-level actions over task-level ones. Remember: Plan first, then triage. Everything else flows from that."