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CBRN recognition — DIPIMC MCQ

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HardMajor Incident ManagementCBRN recognitionDIPIMCDipIMC

Multiple people have collapsed at an enclosed venue with no obvious trauma. Responders begin to feel unwell as they approach the casualties.

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: C — Apply the STEP 1-2-3 approach, keep a safe distance and consider a hazardous-materials cause.

Multiple casualties collapsing without trauma, with responders themselves becoming affected, suggests a hazardous-materials or CBRN cause, so the STEP 1-2-3 Plus approach is applied: one casualty prompts caution, two raises concern, and three or more signals a likely hazardous environment requiring scene safety and specialist resources. Rushing in risks becoming a casualty and worsening the incident. Recognition and self-protection precede patient care.

Reference: JESIP Joint Doctrine