What is a common first step in assessing a casualty?

Checking responsiveness is a fundamental initial step when assessing a casualty. This step is crucial because it helps you determine the level of consciousness and alertness of the individual, which can provide vital information about their condition. By assessing responsiveness, you can quickly identify if the casualty is able to respond to stimuli, such as verbal commands or physical touch. This evaluation aids in deciding the appropriate next actions, such as calling for help or performing further assessments.

If a casualty is unresponsive, it raises the urgency for immediate interventions, such as assessing the airway and breathing, while being prepared to begin resuscitation efforts if necessary. Understanding the casualty's responsiveness can also guide you in determining the severity of their injuries and if they require specific medical assistance.