What should rescuers see to confirm effective ventilation with a BVM?

Effective ventilation with a Bag-Valve-Mask (BVM) can be confirmed through visible chest rise. This is crucial because chest rise indicates that air is entering the lungs and that the ventilation is effective, thus ensuring oxygen is being delivered to the patient. If the chest is rising appropriately with each breath administered, it suggests that the BVM is creating a proper seal and effectively ventilating the patient's lungs.

While other factors, like stable pulse and clear airway, are important in the overall management of a patient, they do not directly confirm the effectiveness of the BVM ventilation. Similarly, breath sounds can indicate airway patency and lung function but may not explicitly demonstrate that ventilation is occurring. In contrast, visible chest rise serves as a straightforward and immediate visual cue to the rescuer that their actions are resulting in successful ventilation.