What should a lifeguard do if the first breath does not enter the guest's lungs?

If the first breath does not enter the guest's lungs, readjusting and trying again is the appropriate response because it addresses potential issues with the airway's position or seal during the rescue breaths.

In this situation, it is essential to ensure the airway is properly aligned, which can be achieved by tilting the head back slightly and ensuring a good seal around the mouth if performing mouth-to-mouth ventilation. Sometimes, simply repositioning the head or adjusting the approach can make a significant difference in successfully delivering air to the lungs.

Continuing the effort to provide effective ventilation is crucial, especially in life-threatening situations, and it ensures that the lifeguard is doing everything possible to maintain an open airway. Each attempt allows the lifeguard to assess if the adjustments made improve the chances of ventilation success. By focusing on readjusting rather than moving to other options, the lifeguard remains committed to providing the best care possible in that critical moment.