What are risk factors for aspiration pneumonia in dysphagia?

• A. Impaired airway protection
• B. Reduced cough reflex
• C. Impaired airway protection, reduced cough reflex, poor bolus control, regurgitation with aspiration risk, and poor oral hygiene.
• D. Excellent oral hygiene.

Answer: (C)

Risk for aspiration pneumonia in dysphagia comes from multiple, interacting problems that allow material to enter and irritate the airway and to become infected once aspirated. If airway protection during swallowing is impaired, material can more easily slip into the larynx or trachea. A reduced cough reflex means the body’s primary defense to clear aspirated material is weaker, so anything that gets in stays longer and can cause infection. Poor bolus control reflects difficulty coordinating chewing and swallowing, leading to premature spillage of the bolus into the pharynx or airway before a safe swallow is set up. Regurgitation with aspiration risk adds backflow of contents from the esophagus or oropharynx directly into the airway, increasing exposure to bacteria. Finally, poor oral hygiene raises the bacterial load in the oropharynx, so if material is aspirated, the likelihood of infection is higher. Excellent oral hygiene would actually reduce this risk, not contribute to it. All these factors together create a higher risk profile for aspiration pneumonia in someone with dysphagia.