What is the first step in the primary assessment of a casualty?

The first step in the primary assessment of a casualty is to ensure the scene is safe before approaching the casualty. Safety is paramount in any emergency situation to prevent further injuries to both the rescuer and the victim. Before assessing the casualty or providing any first aid, the rescuer must evaluate the environment for potential hazards such as traffic, fire, electricity, or potentially aggressive individuals. By confirming that the scene is secure, the rescuer can approach the casualty safely and effectively.

Once the scene is confirmed safe, the rescuer can then proceed to check for responsiveness, call for help if needed, and assess breathing. These subsequent steps are essential but are contingent upon the initial safety assessment being completed successfully.