As a foundational tool in the basic airway management toolkit, bag valve mask ventilation can save lives, relieve patient stress, and make transport easier. Bag valve mask ventilation is appropriate when a patient shows signs of hypoxic respiratory failure, apnea, or hypoxically induced altered mental states. Patients who are hyperventilating or have sustained injuries that reduce respiratory effort may also require ventilation. It may be appropriate to ventilate women in labor when there is reason to believe that they are not getting adequate oxygen or are so fatigued that breathing becomes difficult.