Question 19 of 20 Two rescuers are performing CPR on an adult victim. Which observation would cause the bystanding nurse to intervene? There are two rescue breaths for every 15 compressions. Rescue breaths last 1 second. The rescuer seals the victim's nose when breathing into the victim's mouth. Rescue breaths cause the chest to rise visibly. SUBMIT ANSWER

The correct answer is: **There are two rescue breaths for every 15 compressions.** **Explanation:** According to the latest **American Heart Association (AHA)** guidelines for adult CPR: - **Compressions to Rescue Breaths Ratio:** The recommended ratio is **30 compressions followed by 2 rescue breaths (30:2)**, not 15:2. This ensures adequate circulation and oxygenation during CPR. The other options are consistent with proper CPR techniques: - **Rescue breaths lasting 1 second** help ensure effective ventilation without causing excessive ventilation. - **Sealing the victim's nose when delivering breaths** ensures that air goes into the lungs rather than escaping through the nose. - **Rescue breaths causing visible chest rise** indicate that air is entering the lungs effectively. Using a 15:2 ratio could lead to insufficient chest compressions, reducing the effectiveness of CPR and potentially decreasing the victim’s chances of survival. Therefore, the bystanding nurse should intervene if observing a 15:2 ratio. **Answer:** There are two rescue breaths for every 15 compressions.