What is the primary function of an oropharyngeal airway?

The primary function of an oropharyngeal airway is to keep the tongue off of the posterior pharynx. When a patient is unconscious or has impaired consciousness, their tongue can fall back and obstruct the airway, leading to potential respiratory issues. The oropharyngeal airway is designed to prevent this blockage by maintaining an open passage for air to flow into the trachea, thus facilitating effective ventilation.

This device works by providing structure that holds the tongue forward, preventing it from pressing against the back of the throat, which could block airflow. It is particularly useful in emergency situations where maintaining an open airway is critical. Therefore, the correct answer highlights this essential role of maintaining airway patency.