What is the purpose of scene size-up and what elements does it include?

• A. An emergency medical assessment of all patients.
• B. A quick evaluation of hazards, resources, access, and an initial plan.
• C. An in-depth medical assessment of patients.
• D. A planning stage for future missions.

Answer: (C)

Scene size-up is the rapid, first-look assessment you perform on arriving at a scene to sets the response in motion. Its purpose is to ensure safety and to establish how you’ll approach the situation, not to diagnose or treat patients right away. You quickly identify potential hazards and risks, estimate how many people might be involved, determine what resources you have and what you still need, check how you and others can access and evacuate the area, and outline an initial plan for actions—such as entry points, who handles what tasks, and how to communicate with others. This quick assessment gives you the information you need to proceed safely and effectively. The medical checks of patients come later, once the scene is secured.