Red Cross Lifeguard Practice Test

Which statement about bag-valve-mask resuscitators (BVMs) is most accurate?

1. BVMs are readily available at all emergency scenes.

2. Monitoring the victim for full exhalation is not required.

3. Ventilations are more effective when two rescuers operate the BVM.

4. When used by a single rescuer, BVMs allow easy coordination with chest compressions.

The correct answer is: Ventilations are more effective when two rescuers operate the BVM.

The statement regarding ventilations being more effective when two rescuers operate the BVM is accurate because it highlights an important aspect of effective resuscitation techniques. When two rescuers are working together, one can focus on maintaining a proper seal on the mask, while the other can control the bag and ensure the correct volume of air is delivered to the victim's lungs. This teamwork reduces the likelihood of air leakage around the mask, which can occur if it's not held tightly, resulting in more effective ventilations. Having two rescuers allows for better coordination and timing between breaths and compressions during CPR. This collaboration helps to maintain the overall quality of care being provided, as one rescuer can also monitor the victim’s response more closely while assisting with the BVM. The other statements do not convey as accurate or safe practices regarding the use of BVMs in emergency situations. For example, it's important to ensure readiness and availability of BVMs during emergencies, and monitoring for full exhalation is critical to ensure proper ventilation. Furthermore, while it's possible for a single rescuer to use a BVM, doing so effectively while also performing chest compressions can be difficult and may not result in optimal outcomes.