When to Use an OPA
An oropharyngeal airway is used only on unresponsive patients without a gag reflex. If a patient gags, the airway can trigger vomiting and aspiration. The device holds the tongue away from the posterior pharynx and makes BVM ventilation easier.
Measuring the Correct Size
Measure from the corner of the patient's mouth to the earlobe, or from the center of the mouth to the angle of the jaw. An airway that is too small can push the tongue backward, while one that is too large can obstruct the larynx or damage the epiglottis.
Insertion Steps
Open the mouth with the crossed-finger technique, then insert the airway upside down with the tip toward the roof of the mouth and rotate it 180 degrees once it is near the soft palate. For infants and small children, use a tongue depressor and insert the airway in the anatomical position to avoid injuring the palate. Reassess breathing and continue to monitor for a gag reflex.