What is an indication for using a bag-mask ventilation?

Using bag-mask ventilation is particularly indicated for patients who require intubation but are not yet intubated because it serves to provide adequate ventilation and oxygenation until the airway can be definitively secured with an endotracheal tube. This technique allows healthcare providers to deliver positive pressure ventilation, ensuring that the patient receives oxygen while preparing for intubation.

In situations where a patient is unconscious and has a patent airway, bag-mask ventilation may not be necessary, as the airway is open, and the patient may be able to breathe adequately on their own. For patients who can speak, they are typically able to maintain their own airway and do not require assistance with ventilation. In awake patients experiencing difficulty breathing, the focus may be on addressing the underlying issue rather than providing bag-mask ventilation, as they might still have some level of airway protection and breathing capability. Thus, using bag-mask ventilation is most appropriate for those who are unable to maintain their airway or adequately ventilate themselves until intubation can be accomplished.