If the guest does not respond to initial ventilations, how often should you continue rescue breathing for an adult?

In the context of rescue breathing for an adult who is unresponsive and not breathing adequately, continuing rescue breaths at a rate of every 5 seconds is considered appropriate practice. This rate allows for a sufficient volume of air (approximately 1 breath every 5 seconds) to provide adequate oxygenation while minimizing the risk of overinflation of the lungs.

Rescue breathing aims to deliver oxygen directly to a person's lungs, compensating for the lack of natural breathing. This interval ensures that each breath is effective enough to raise the chest visibly, indicating that air is entering the lungs, without causing excess pressure that could lead to complications like gastric inflation.

Establishing a clear rhythm with the 5-second interval is also essential for maintaining a consistent approach, making it easier for the rescuer to keep the procedure effective and for any bystanders to understand and assist if necessary. This timing helps ensure the patient receives the necessary breaths while also providing time for the rescuer to assess their condition regularly.