What should be the first step when encountering an unresponsive adult?

When encountering an unresponsive adult, the initial step is to call for help. This is crucial because it ensures that emergency services are notified while you're assessing the situation and providing care.

Calling for help not only brings additional resources to the scene but also allows the responder to focus on potentially life-saving interventions without delay. In many cases, once assistance is summoned, other responders can take over or provide support, allowing for a more effective and safe response.

Following this initial step, checking for breathing, performing CPR, or checking for a pulse are important actions that would typically follow. However, without first ensuring that trained assistance is on the way, your ability to provide effective resuscitation measures could be compromised due to a lack of support or necessary equipment.