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EMS Operations and Scene Safety Flashcards

7 cards from real EMT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 EMS Operations and Scene Safety flashcards as text

  1. What does the acronym 'IDLH' stand for in hazardous materials response?

    Answer: Immediately Dangerous to Life or Health

    IDLH stands for Immediately Dangerous to Life or Health, representing the concentration of a hazardous substance that poses an immediate threat to life or could cause irreversible health effects.

  2. The Emergency Response Guidebook (ERG) is primarily used by first responders to:

    Answer: Identify hazardous materials and determine appropriate initial response actions

    The ERG provides first responders with essential information on hazardous materials including identification, protective distances, and initial emergency response guidance.

  3. In the START triage system used at mass casualty incidents, how many categories are patients sorted into?

    Answer: 4

    The START (Simple Triage and Rapid Treatment) system uses 4 categories: Immediate (Red), Delayed (Yellow), Minor (Green), and Expectant/Deceased (Black).

  4. In the START triage system, a patient who is breathing at a rate greater than 30 breaths per minute should be tagged as:

    Answer: Immediate (Red)

    A respiratory rate greater than 30 breaths per minute indicates respiratory compromise and classifies the patient as Immediate (Red), requiring urgent intervention.

  5. The 'hot zone' at a hazardous materials incident is best defined as:

    Answer: The area immediately surrounding and including the source of contamination

    The hot zone is the area of highest contamination directly surrounding the hazmat source; only properly trained and equipped personnel may enter this zone.

  6. When responding to a suspected carbon monoxide poisoning in an occupied building, what is the EMT's most important first action?

    Answer: Confirm the scene is safe and the building has been ventilated or evacuated

    Carbon monoxide is an odorless, colorless gas that poses an immediate threat to rescuers; scene safety must be confirmed and the building ventilated before entry.

  7. According to DOT hazmat placard classifications, which class number identifies a flammable liquid?

    Answer: Class 3

    Class 3 placards identify flammable liquids such as gasoline, diesel, and alcohols, which are commonly encountered at vehicle accident scenes.