Sonorous breathing in an unresponsive patient indicates what?

Sonorous breathing, often described as a deep, pronounced sound resembling snoring, typically indicates that there is an obstruction in the airway, specifically at the level of the oropharynx. In an unresponsive patient, this sound suggests that the airway is partially obstructed, possibly due to the relaxation of the muscles in the throat which can lead to the tongue falling back and blocking the airway. This is considered an anatomical obstruction because it involves the structures within the throat that can physically obstruct airflow.

Recognizing sonorous breathing is crucial in emergency situations, as it alerts responders to the need for airway management. It indicates that the patient's airway might require intervention, such as repositioning, suctioning, or possibly intubation, to ensure that the airway is clear and that ventilation can occur.