What is the most common cause of airway obstruction in unconscious patients?

The most common cause of airway obstruction in unconscious patients is the tongue. When a person loses consciousness, the muscles in the throat, including those that help keep the airway open, relax. This relaxation can allow the tongue to fall back and obstruct the upper airway, especially in a supine position. It is a significant concern in emergency situations, as this can lead to inadequate ventilation and oxygenation, increasing the risk of complications.

In unconscious individuals, the airways are more vulnerable to obstruction due to the decreased muscle tone that prevents the tongue from being held in its normal position. Thus, the tongue effectively blocks airflow, making it critical for healthcare providers to recognize this risk and take appropriate measures, such as repositioning the patient's head or utilizing airway adjuncts, to ensure that the airway remains patent.