Which factor directly impairs the ability to clear secretions?

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

Answer: (B)

Clearance of secretions hinges on an effective cough to propel mucus from the airways up to the oropharynx where it can be expelled or swallowed. If a person is unable to cough, there’s no strong expulsive force to move the secretions out, so mucus accumulates, airway obstruction can occur, and the risk of atelectasis or infection rises. This is a direct disruption of the main mechanism that physically removes secretions from the lungs.

Other factors can influence clearance but not by directly stopping the clearing action itself. For example, dehydration thickens mucus making it harder to clear, and decreased level of consciousness can blunt protective airway reflexes including coughing, but the fundamental issue is not having an effective cough in the first place. Risk for aspiration increases the chance of secretions entering the wrong areas rather than impairing the actual clearing process.