What should you begin if the unresponsive guest has a pulse but is not showing signs of normal breathing?

When an unresponsive guest has a pulse but is not exhibiting signs of normal breathing, the appropriate action is to initiate rescue breathing. This situation indicates that the body is still receiving blood flow due to the presence of a pulse, but the individual is not breathing adequately to oxygenate their blood.

Rescue breathing is crucial because it provides the necessary oxygen to the lungs and hence to the rest of the body. It involves giving breaths to the person at a rate that allows for proper ventilation without the need for chest compressions, which would be required in full CPR. This approach helps to prevent further complications, such as brain damage or organ failure, that can arise from prolonged periods without oxygen.

In this scenario, simply monitoring the person's pulse without taking additional action (like calling for professional help) would not be life-saving, as their breathing status is critical. Therefore, the action of initiating rescue breathing directly addresses the urgent need for ventilation while recognizing that circulation is still intact.