Which is an acceptable method of selecting an appropriately sized oropharyngeal airway?

Measure the corner of the mouth to the angle of the mandible.

An acceptable method for selecting an appropriately sized oropharyngeal airway (OPA) involves measuring the device against the patient. Here is the standard technique:

1. Place the OPA against the side of the patient’s face.
2. Align the flange (the flat end) of the OPA with the corner of the patient’s mouth.
3. Ensure that the tip of the OPA reaches the angle of the patient’s mandible (jaw).