How should rescue breaths be given in BLS?

Rescue breaths in Basic Life Support should be given by sealing the lips around the person’s mouth and providing breaths every 5 to 6 seconds while checking for chest rise. This method is crucial because it ensures that the breaths are delivered slowly and effectively, allowing for adequate oxygenation of the lungs without over-inflation, which can lead to complications such as gastric insufflation or potential harm to the lungs. By monitoring for chest rise, rescuers can confirm that the breaths are being properly delivered and that the air is entering the lungs, which is a key indicator of effective ventilation.

This approach is part of the foundational principles of BLS, emphasizing the importance of a controlled and methodical technique when providing rescue breaths to someone who is not breathing but has a pulse. It reflects the need to maintain an appropriate rate of ventilation to optimize oxygen delivery while minimizing the risk of adverse effects.