How do tongue can cause airway obstruction in unconscious patient?

In an unconscious patient, the tongue can fall back and obstruct the airway due to loss of muscle tone and reflexes. This occurs especially when the patient is in a supine position, allowing the tongue to block the oropharynx and impede airflow. Additionally, the lack of protective reflexes increases the risk of aspiration, further complicating airway management. Proper positioning or airway adjuncts, like an airway adjunct or intubation, may be necessary to secure the airway.