In the context of lifeguarding, what should be the immediate response to witness someone collapse?

The immediate response to someone collapsing should start with checking for pulse and breathing. This step is essential because it helps determine the condition of the person and whether they require immediate medical attention. If the individual is unresponsive and not breathing or does not have a detectable pulse, it indicates a critical state that requires prompt action, such as administering CPR.

Assessing pulse and breathing gives the rescuer crucial information to decide the next course of action, such as calling for emergency services or starting artificial respiration as needed. Additionally, understanding the person's condition guides the lifeguard in providing appropriate care until professional medical assistance arrives.

While assessing the surrounding area for safety is important, it generally comes after initially checking the victim’s condition. It ensures that both the rescuer and the victim are not in danger while providing assistance. Starting artificial respiration is also a critical intervention but is only appropriate if it is determined that the individual is not breathing.