How should you expel air when giving rescue breaths?

The correct response entails the importance of creating an airtight seal while giving rescue breaths. When administering rescue breaths, it's crucial to ensure that the air you are expiring into the victim’s lungs does not escape, which could occur if there isn't a proper seal. Maintaining an airtight connection allows for efficient delivery of the air, ensuring that the victim receives the necessary oxygen. Additionally, this technique helps to reduce the risk of aspiration, which can happen if the air escapes.

It's paramount to balance the force with which air is expelled; while the act of blowing air should create a seal, it should also be done with sufficient gentleness to avoid causing discomfort or potential injury to the victim's lungs. Understanding this method highlights the need for both technique and care when delivering rescue breaths to a person in respiratory distress or cardiac arrest.