Which factor best demonstrates decreased LOC as a risk for airway obstruction?

• A. Patients with Decreased LOC
• B. Dehydration
• C. Unable to Cough
• D. Risk for Aspiration

Answer: (A)

Decreased level of consciousness directly reduces the body's ability to protect the airway, so the airway is more likely to become obstructed. When someone is obtunded or unconscious, protective reflexes such as the gag and cough reflexes are blunted and muscle tone supporting the airway relaxes. This makes it easier for the tongue to fall back, secretions to pool, or a foreign material to obstruct the airway, all of which are classic ways airway obstruction can occur.

The other statements don’t show this risk as clearly. Dehydration doesn’t by itself create a mechanical airway blockage. Being unable to cough is a sign of impaired airway clearance, which can accompany decreased LOC, but it’s more a consequence of impaired reflexes rather than the factor that demonstrates the decreased LOC itself. Risk for aspiration is a related concern but describes a potential outcome rather than the specific demonstration of decreased LOC as a risk factor.