How is an oropharyngeal airway (OPA) measured?

The correct method for measuring an oropharyngeal airway (OPA) involves determining the appropriate size based on the patient's anatomy to ensure effective airway management. The measurement is taken from the corner of the patient's ear to the corner of the patient's mouth. This correlates with the length of the device needed to sit properly within the oropharyngeal space. Selecting the appropriate size is crucial because it helps maintain airway patency without causing trauma to the soft tissues of the mouth or pharynx.

Using this measurement allows responders to adequately assess the correct size of the OPA, ensuring it properly fits the patient's airway, optimally facilitating airway management during resuscitation efforts. Other measurement methods may not align with the anatomical structures and could lead to ineffective or inappropriate use of the airway adjunct.