# During a mass casualty incident involving a chemical spill, the emergency department nurse is triaging multiple patients. Which action should the nurse prioritize first when managing contaminated patients? > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=540389 > language: ko > subject: Adult Health ## 문제 During a mass casualty incident involving a chemical spill, the emergency department nurse is triaging multiple patients. Which action should the nurse prioritize first when managing contaminated patients? A chemical plant explosion has resulted in multiple casualties arriving at the emergency department. Several patients show signs of chemical exposure with skin irritation, respiratory distress, and eye irritation. ## 보기 1. Immediately begin administering oxygen to all patients showing respiratory distress 2. Start IV access on the most critically injured patients first 3. Begin documenting patient information and injury severity scores 4. Establish decontamination procedures before allowing patients into the treatment area **✔ 정답** **정답: 4** ## 해설 In mass casualty incidents involving chemical contamination, decontamination must be the first priority to prevent secondary contamination of healthcare workers, other patients, and the facility. This follows the principle of safety first in emergency management. In mass casualty situations involving chemical exposure, decontamination procedures must be established immediately according to the basic principle of emergency management, 'safety first.' This question assesses the nurse's understanding of contamination control and the hierarchy of priorities in emergency situations. Chemical contamination presents unique challenges because contaminated patients can cause secondary exposure to healthcare workers, other patients, and the entire healthcare facility. The primary goal is to prevent the spread of hazardous substances while providing appropriate treatment. Decontamination procedures must be established before patients enter treatment areas to create a safe environment for everyone. The decontamination process typically includes removing contaminated clothing, washing affected areas with copious amounts of water or appropriate neutralizing solutions, and proper disposal of contaminated materials. This process not only protects healthcare workers but also prevents cross-contamination between patients and maintains the integrity of the healthcare facility. From a nursing perspective, this requires an understanding of personal protective equipment (PPE) requirements, proper decontamination techniques, and the ability to coordinate with hazardous materials teams and emergency response personnel. Nurses must also consider the psychological impact on patients who may be frightened or confused during the decontamination process. This scenario reflects real-world emergency preparedness requirements where nurses must be ready to respond to chemical, biological, radiological, nuclear, and explosive (CBRNE) incidents. The NCLEX-RN exam emphasizes the importance of safety protocols and the nurse's role in emergency preparedness and response. Why option 1 is incorrect: While providing oxygen to a patient with respiratory distress is important, without decontamination there is a risk of contaminating healthcare workers and the facility. Why option 2 is incorrect: Intravenous access is part of treatment, but establishing a safe environment must take priority. Why option 3 is incorrect: Documentation is important, but immediate safety measures take higher priority. ## 심화 해설 Understanding the Priority in a Chemical Mass Casualty Incident When managing a mass casualty incident (MCI) involving a chemical spill, the primary goal shifts from individual patient care to doing the greatest good for the greatest number of people. The most critical initial step is not to immediately dive into medical interventions like oxygen administration or IV access, but to protect the healthcare facility, current patients, and staff from becoming secondary casualties. This principle is the foundation of hazardous material (hazmat) response and is prioritized in triage algorithms designed specifically for chemical disasters. Why Decontamination Must Come First The correct action is to establish decontamination procedures before allowing patients into the treatment area. The rationale is rooted in the very nature of a chemical incident. Patients arriving from a chemical spill are contaminated with the offending agent. If they are brought directly into the emergency department (ED), the chemical can off-gas or transfer via contact, contaminating surfaces, equipment, and air. This can incapacitate healthcare providers and expose other vulnerable patients, effectively shutting down the ED's ability to function. A study validating a triage algorithm for irritant gas syndrome agents reinforces that the initial step in an ED during such an event is a systematic approach that begins with recognizing the exposure and immediately initiating protective measures, which inherently includes decontamination, before sorting patients into treatment categories [1]. The safety of the treatment environment is the absolute first priority in the incident command structure for chemical, biological, radiological, nuclear, and explosive (CBRNE) events [3]. Analyzing the Incorrect Options The other options represent actions that are important but are secondary to ensuring a safe care environment. - Option 1 (Administer oxygen): While patients in respiratory distress need oxygen, providing it before decontamination is dangerous. A patient with chemical-soaked clothing will continue to inhale concentrated fumes and expose the nurse providing care. The oxygen itself does not stop the ongoing exposure. Triage systems for chemical events are designed to categorize patients based on signs and symptoms after the immediate life-saving intervention of decontamination has been initiated [1]. - Option 2 (Start IV access): Initiating IV access on the most critically injured is a core trauma principle, but it is not the first step in a chemical MCI. This action exposes the nurse to a prolonged, hands-on procedure with a contaminated patient, creating a high risk of cross-contamination. The priority of care is determined by a triage system that accounts for the chemical injury severity, but only after the scene and receiving areas are safe [2]. - Option 3 (Begin documenting): Documentation is a vital legal and clinical responsibility. However, in the immediate chaos of an MCI, it is never prioritized over life-saving interventions and safety. Patient tracking and injury severity scoring are components of the secondary triage and treatment phases, which occur once the decontamination corridor is established and the initial chaos is controlled. Clinical Application of Triage in Chemical Disasters Standard hospital triage systems like the Emergency Severity Index (ESI) are not designed for chemical disasters. Research comparing triage systems using data from a real-world chlorine spill found that the injury severity levels assigned by standard systems did not correlate well with actual patient outcomes in a chemical exposure context [2]. This is because chemical exposures create a unique pathophysiology where symptoms can be delayed, and the primary threat of ongoing contamination is not a factor in standard trauma or medical triage. A novel triage algorithm specific to irritant gas syndrome agents was developed to address this gap, focusing on the specific signs and symptoms of the exposure to more accurately and efficiently sort patients after decontamination [1]. The competency required for managing these incidents includes a clear understanding that the incident commander's first duty is to ensure scene and responder safety, which translates at the hospital door to a strict "decontamination first" policy [3]. The nurse's priority is to trigger this safety protocol, not bypass it to deliver individual medical care that would ultimately compromise the entire operation. ## 임상 시나리오 Chemical MCI: Decontamination FirstProtect the facility before initiating patient care In a chemical mass casualty incident, the absolute priority is gross decontamination before patients enter the treatment area. This prevents secondary contamination of staff, equipment, and other patients, which could disable the entire emergency department. Establish a decontamination zone outside the facility. Patients must be undressed and flushed with water for at least 2-5 minutes for most agents, following the principle of doing the greatest good for the greatest number. CautionDo not delay decontamination for immediate medical interventions like oxygen or IV access. Life-saving measures are performed concurrently only within the decontamination zone by properly protected personnel. ## 핵심 개념 - **Secondary Contamination** — The transfer of a hazardous substance from a contaminated patient to healthcare personnel, equipment, or the environment, potentially incapacitating the facility. - **Decontamination (Decon)** — The process of removing or neutralizing hazardous substances from personnel and equipment to prevent harm and further spread. - **Mass Casualty Incident (MCI)** — An event where the number and severity of casualties overwhelm the immediately available resources, requiring a shift from individual care to providing the greatest good for the greatest number. ## 같은 주제 문제 - [A nurse is working in the emergency department when a mass casualty incident involving a c…](https://mymerci.kr/pages/nclex_q.php?qn_id=540385) - [A nurse is working in the emergency department during a mass casualty incident involving a…](https://mymerci.kr/pages/nclex_q.php?qn_id=540386) - [A nurse is responding to a chemical spill at a community event where multiple patients arr…](https://mymerci.kr/pages/nclex_q.php?qn_id=540387) - [A nurse is working in a field hospital during a suspected bioterrorism attack with anthrax…](https://mymerci.kr/pages/nclex_q.php?qn_id=540388) - [During a mass casualty incident involving a chemical spill, the triage nurse must prioriti…](https://mymerci.kr/pages/nclex_q.php?qn_id=540390) - [A nurse is working in the emergency department during a mass casualty incident involving a…](https://mymerci.kr/pages/nclex_q.php?qn_id=540391) - [A nurse is working in the emergency department during a mass casualty incident involving a…](https://mymerci.kr/pages/nclex_q.php?qn_id=540392) - [During a mass casualty incident involving a suspected bioterrorism attack with anthrax exp…](https://mymerci.kr/pages/nclex_q.php?qn_id=540393) --- More free questions: [기출문제](https://mymerci.kr/) _학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요._