# During a mass casualty incident involving a suspected bioterrorism attack with anthrax exposure, the triage nurse must prioritize patients for treatment. Which patient should receive the highest priority for immediate intervention?

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## 문제

During a mass casualty incident involving a suspected bioterrorism attack with anthrax exposure, the triage nurse must prioritize patients for treatment. Which patient should receive the highest priority for immediate intervention?

A bioterrorism incident has occurred at a large public gathering, with suspected aerosolized anthrax exposure affecting multiple victims. The emergency department is receiving numerous patients with varying presentations.

## 보기

1. A 45-year-old patient with mild respiratory symptoms and low-grade fever who was exposed 6 hours ago
2. A 35-year-old patient presenting with severe dyspnea, chest pain, and diaphoresis who was exposed 48 hours ago **✔ 정답**
3. A 28-year-old asymptomatic patient who was in the exposure area but left immediately when the incident occurred
4. A 60-year-old patient with a productive cough and fatigue who was exposed 12 hours ago

**정답: 2**

## 해설

Patient 2 with severe dyspnea and chest pain 48 hours post-exposure indicates fulminant anthrax requiring immediate intervention for survival. Other patients have milder or no symptoms and can wait.

## 심화 해설

Understanding the Priority: Safety and Containment in Bioterrorism

In a mass casualty incident (MCI) involving a suspected bioterrorism attack with Bacillus anthracis (anthrax), the immediate priority is not individual patient care but rather the protection of the entire facility, staff, and other patients. The principles of disaster medicine require a paradigm shift from conventional standards of care to operations where resources and safety are compromised [3]. The systematic review on triage algorithms for bioterrorism emphasizes that effective management hinges on algorithms that first address scene safety and containment to prevent a secondary incident within the healthcare facility [1].

Why Decontamination and Isolation Come First

Anthrax spores are highly resilient and can be aerosolized, posing a significant cross-contamination risk. If patients exposed to aerosolized spores enter the emergency department without decontamination, they can shed spores from their clothing and skin, turning the hospital into a secondary exposure site. The foundational nursing skill set for man-made disasters, including bioterrorism, prioritizes immediate containment and safety procedures before advanced clinical interventions [4]. Establishing isolation precautions and decontamination procedures creates a physical barrier and removes the offending agent, which is the cornerstone of the "scene safety" component of disaster response [3]. Without this step, initiating antibiotic prophylaxis or supportive care is premature and places healthcare providers at risk, potentially crippling the response capacity.

Analyzing the Other Options in the Context of Disaster Medicine

The remaining options represent critical clinical interventions, but their timing is secondary to safety and containment. The CDC guidelines for anthrax detail comprehensive treatment and post-exposure prophylaxis (PEP) regimens, including antibiotics and antitoxins, which are essential for patient survival [2]. However, these guidelines assume that the patient has been properly received and decontaminated if necessary. Beginning antibiotic prophylaxis (Option 2) or supportive care like oxygen and IV fluids (Option 4) before decontamination can expose staff during close contact and contaminate equipment. Similarly, performing rapid diagnostic testing (Option 3) is a lower priority in the immediate triage phase of an MCI. The systematic review of triage algorithms indicates that during a bioterrorism event, the initial triage is based on clinical presentation and exposure history to sort patients, not on time-consuming confirmatory tests that delay life-saving containment and treatment [1]. The CDC guidelines further note that treatment decisions, especially in a declared mass casualty event, are often empirical and based on clinical suspicion rather than waiting for diagnostic confirmation [2].

Clinical Reasoning and NCLEX-RN Application

This question tests the application of disaster triage principles, specifically the critical distinction between conventional and contingency care. The 2023 Model Core Content of Disaster Medicine explicitly states that a key competency is the ability to modify practices when resources are inadequate, focusing on actions that do the most good for the greatest number [3]. A nurse who immediately begins decontamination and isolation is applying this principle by protecting the healthcare infrastructure. The scoping review on nursing skills in disasters reinforces that for man-made events, skills in safety management, decontamination, and the use of personal protective equipment are paramount and must be executed before direct patient care activities [4]. The nurse's first action is to ensure that the arrival of contaminated patients does not create a secondary disaster within the emergency department.

References (research sources)

- [1]Triage Algorithms for Mass-Casualty Bioterrorism: A Systematic Review.Meta-analysis/systematic reviewZhao F, Zhao C, Bai S, Yao L, Zhang Y. (2023) · DOI: 10.3390/ijerph20065070

- [2]CDC Guidelines for the Prevention and Treatment of Anthrax, 2023.GuidelineBower WA, Yu Y, Person MK, Parker CM, Kennedy JL, Sue D, Hesse EM, Cook R, Bradley J, Bulitta JB, Karchmer AW, Ward RM, Cato SG, Stephens KC, Hendricks KA. (2023) · DOI: 10.15585/mmwr.rr7206a1

- [3]The 2023 Model Core Content of Disaster Medicine.Research articleWexler BJ, Schultz C, Biddinger PD, Ciottone G, Cornelius A, Fuller R, Lefort R, Milsten A, Phillips J, Nemeth I. (2023) · DOI: 10.1017/s1049023x23006556

- [4]Nursing skills required across natural and man-made disasters: A scoping review.Research articleSu Y, Wu XV, Ogawa N, Yuki M, Hu Y, Yang Y. (2022) · DOI: 10.1111/jan.15337

## 임상 시나리오

Clinical Practice Guide
Triage and Initial Management of Mass Exposure to Inhalational Anthrax:
1. Immediate Reporting and Isolation: If bioterrorism is suspected, immediately report to public health authorities and implement standard precautions.
2. Symptom-Based Triage: For asymptomatic/early symptom (fever, myalgia) patients, start prophylactic antibiotic treatment and follow up. Patients with severe respiratory symptoms (dyspnea, chest pain) require immediate hospitalization and intensive care.
3. Caution: Early symptoms of inhalational anthrax resemble influenza and are easily mistaken. Large-scale cluster occurrence, rapid symptom deterioration, and lack of response to antibiotics should be considered red flags. In SATA (Select All That Apply) questions, beware of traps that distinguish between 'the first action to take' and 'the most urgent patient'.

## 핵심 개념

- **Inhalational Anthrax** — Inhalation anthrax. A fatal disease caused by inhaling anthrax spores, presenting initially with nonspecific flu-like symptoms and progressing rapidly to respiratory failure and shock in later stages.
- **Mass Casualty Triage** — Mass casualty triage. A systematic process for prioritizing patient treatment to save as many lives as possible under limited resources.
- **Bioterrorism** — Bioterrorism. The act of intentionally spreading pathogens (bacteria, viruses, etc.) to cause fear, harm, or death.
- **Disease Progression** — Disease progression. Understanding how a disease manifests and worsens over time is essential for triage and treatment planning.
- **Ethical Triage** — Ethical triage. Applying ethical principles (e.g., the greatest good for the greatest number) to decide who to treat first in a disaster situation with limited resources.

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