OFA Emergency Response & Scene Assessment 3 — Questions and Answers
Question 1: Which statement BEST describes the 'mechanism of injury' (MOI) concept in emergency assessment?
- The specific anatomical location of the wound
- The forces and events that caused the injury (Correct answer)
- The severity rating assigned by paramedics
- The time elapsed since the injury occurred
Correct answer: The forces and events that caused the injury
Mechanism of injury describes the forces involved (e.g., fall height, crush force) and helps predict hidden or internal injuries.
Question 2: At a hazardous materials incident, the 'hot zone' is defined as:
- The area where decontamination takes place
- The area where command post is established
- The area of highest contamination directly around the hazard (Correct answer)
- The perimeter set for bystanders
Correct answer: The area of highest contamination directly around the hazard
The hot zone (exclusion zone) is the area of highest contamination; only properly equipped personnel may enter.
Question 3: While performing a scene size-up, you notice overhead power lines are down near an injured worker. Your best action is to:
- Drag the worker away from the lines quickly
- Stay back and call for specialized help (Correct answer)
- Use a rubber glove to move the lines
- Approach cautiously and assess the worker from 1 foot away
Correct answer: Stay back and call for specialized help
Downed power lines remain energized until utility workers confirm otherwise; first aiders must stay clear and summon specialized help.
Question 4: In the DRABC framework, what does the 'D' stand for?
- Defibrillation
- Danger (Correct answer)
- Diagnosis
- Disability
Correct answer: Danger
In DRABC, 'D' stands for Danger — always check for hazards to yourself, bystanders, and the patient before proceeding.
Question 5: A secondary survey is MOST appropriately performed:
- Before calling for emergency services
- Only by paramedics on scene
- After life-threatening conditions have been addressed in the primary survey (Correct answer)
- Simultaneously with the primary survey
Correct answer: After life-threatening conditions have been addressed in the primary survey
The secondary survey (head-to-toe assessment) only begins after the primary survey has identified and managed immediate life threats.
Question 6: When communicating with EMS dispatch about a workplace emergency, which piece of information is MOST critical to provide first?
- The name of the injured worker
- The exact location of the emergency (Correct answer)
- The worker's medical history
- The company's insurance policy number
Correct answer: The exact location of the emergency
Giving EMS the precise location first ensures help is dispatched to the correct address without delay.
Question 7: Bystander control at an emergency scene is important primarily because:
- Bystanders may contaminate legal evidence
- Crowds can interfere with care and create additional hazards (Correct answer)
- OSHA regulations require it
- Bystanders may provide inaccurate information to EMS
Correct answer: Crowds can interfere with care and create additional hazards
Uncontrolled bystanders can obstruct access, increase panic, and create additional safety risks for both responders and the patient.
OFA Emergency Response & Scene Assessment 3
Which statement BEST describes the 'mechanism of injury' (MOI) concept in emergency assessment?