Which device is commonly used to obtain an airway in an unconscious patient?

The oropharyngeal airway is commonly used in unconscious patients to maintain an open airway. This device is designed to fit into the patient's mouth and extend into the oropharynx, preventing the tongue from obstructing the airway. It is particularly effective in cases where the patient cannot protect their own airway due to unconsciousness or decreased consciousness levels.

In unconscious individuals, the risk of tongue displacement blocking the airway is significant, which is why this device is crucial. The oropharyngeal airway allows for better ventilation and can facilitate other interventions, such as bag-mask ventilation, if necessary.

While other devices might play roles in airway management, they serve different purposes. A nasal cannula is primarily for delivering oxygen and would not address airway obstruction. A bag-valve mask is used for ventilation but requires a patent airway to be effective. An endotracheal tube is typically employed in more advanced airway management situations, particularly when long-term airway control is needed or when performing intubation, but it is not the first line for simply maintaining an airway in an unconscious patient.