Which complication of enteral nutrition is the most potentially dangerous in the older adult?

• A. Diarrhea
• B. Abdominal distention
• C. Aspiration
• D. Leaking around the enterostomy site

Answer: (C)

Aspiration is the most dangerous complication with enteral feeding in older adults because material entering the lungs can cause rapid and severe lung injury—chemical pneumonitis, bacterial pneumonia, acute respiratory distress syndrome, and can progress to respiratory failure or sepsis. The elderly are especially at risk due to impaired swallow and gag reflexes, reduced cough, dementia or neurodegenerative disease, and higher prevalence of lung disease, all of which increase the likelihood that formula or gastric contents will be aspirated during feeding or with tube misplacement. The consequences can escalate quickly and are more difficult to manage in this population, making prevention critical—keeping the patient elevated during and after feeds, verifying tube placement before each feed, and opting for feeding approaches (like continuous rather than bolus) that minimize reflux risk.

Diarrhea and abdominal distention are certainly concerns and common in enteral nutrition, but they typically do not carry the same immediate, life-threatening risk as aspiration. Leaking around an enterostomy site is problematic and requires care, but again does not pose the same acute danger to respiration and oxygenation as aspiration.