Which is the most common cause of airway obstruction in an unconscious patient?

Which is the most common cause of airway obstruction in an unconscious patient?

• A. A foreign body
• B. Mucosal swelling
• C. The tongue
• D. Loose dentures

Answer: (C)

When a patient is unconscious, protective airway muscles lose tone and the tongue tends to fall backward, blocking the airway. This relaxation of the tongue is the most common reason the airway becomes obstructed in an unresponsive person, because the tongue occupies the space behind the soft palate and can easily seal off the pharynx when it relaxes. A foreign body can cause obstruction, but that typically occurs during choking in a conscious or semi-conscious person who is actively coughing or gagging. Mucosal swelling can impede airflow as edema builds, but it’s not the immediate, most frequent cause in an unconscious patient. Loose dentures can shift and contribute to obstruction, yet they’re less consistently the primary culprit compared with the tongue when someone is unresponsive. So, the most common cause of airway obstruction in an unconscious patient is the tongue falling back and blocking the airway. This is why airway management often focuses on maintaining an open airway with positioning or an airway adjunct to prevent the tongue from occluding the passage.

When a patient is unconscious, protective airway muscles lose tone and the tongue tends to fall backward, blocking the airway. This relaxation of the tongue is the most common reason the airway becomes obstructed in an unresponsive person, because the tongue occupies the space behind the soft palate and can easily seal off the pharynx when it relaxes.

A foreign body can cause obstruction, but that typically occurs during choking in a conscious or semi-conscious person who is actively coughing or gagging. Mucosal swelling can impede airflow as edema builds, but it’s not the immediate, most frequent cause in an unconscious patient. Loose dentures can shift and contribute to obstruction, yet they’re less consistently the primary culprit compared with the tongue when someone is unresponsive.

So, the most common cause of airway obstruction in an unconscious patient is the tongue falling back and blocking the airway. This is why airway management often focuses on maintaining an open airway with positioning or an airway adjunct to prevent the tongue from occluding the passage.