Which patient is at highest risk for airway obstruction?

• A. Dehydration
• B. Unable to Cough
• C. Patients with Decreased LOC
• D. Unable to Communicate

Answer: (C)

Protection of the airway relies on being awake and able to protect it with reflexes like coughing and swallowing. When level of consciousness is decreased, those protective reflexes are blunted, the tongue can fall back and partially occlude the airway, and the risk of aspirating secretions or food increases dramatically. That combination makes airway obstruction most likely in patients with decreased LOC.

Dehydration can thicken secretions and hinder clearance but doesn’t directly produce obstruction as often. Inability to cough impairs airway clearance, but if some consciousness and reflexes remain, coughing can still help, whereas decreased LOC undermines multiple protective mechanisms at once. Inability to communicate doesn’t by itself cause obstruction; it mainly affects how needs are recognized and managed.