What is the primary action to verify during ventilation with a bag-valve-mask?

The primary action to verify during ventilation with a bag-valve-mask is ensuring that the chest begins to rise. This is a critical indicator that air is being effectively delivered into the lungs. When the chest rises, it signifies that the airway is open and that the positive pressure from the bag is making its way into the patient's lungs, confirming that the ventilation is successful.

In a clinical scenario, observing the rise and fall of the chest is a direct and visible cue that the patient is receiving the breaths they need. It helps to assess the effectiveness of the ventilation technique being employed.

Other considerations, such as ensuring the mask is properly sealed or that the patient's airway is clear, are important components of the process, but the ultimate goal is to confirm that oxygen is being delivered to the patient effectively, represented by the rising chest. If the chest is not rising, it indicates that further adjustments may be necessary, such as repositioning the mask or addressing airway obstructions.