An oropharyngeal airway is a medical device used to maintain an open airway in patients who are unconscious or unable to breathe effectively on their own. It is a curved plastic tube that is inserted into the mouth and extends into the throat, preventing the tongue from blocking the airway. This device is commonly used in emergency situations and during anesthesia. Oropharyngeal airways come in various sizes to accommodate different patients, and proper sizing is crucial for effectiveness. They are typically used in conjunction with other airway management techniques, such as bag-mask ventilation, to ensure adequate oxygen delivery.