Figure 3-1. Check the airway.
Figure 3-2. Open the airway: jaw-thrust method.
c. Primary Survey: B--Breathing. Breathing and ventilation bring oxygen to
the alveoli and remove carbon dioxide from the alveoli. Adequate breathing and
adequate ventilation are essential to life. If the patient must be helped to ventilate, the
best aids are the bag-valve mask device or an endotracheal tube.
(1) Bag-valve mask device. This device can deliver up to 95 percent
oxygen. You can sense when the patient's lungs are receiving sufficient oxygen. The
disadvantage of this device is that it is difficult for one person to achieve an adequate
seal on the patient.
(2) Endotracheal tube. If an endotracheal tube is used, someone must
remain with the patient to monitor him.