Between cranberry juice and water, which has been shown to better irrigate feeding tubes and maintain patency?

• A. Cranberry juice
• B. Water
• C. Isotonic saline
• D. Olive oil

Answer: (B)

Maintaining feeding tube patency hinges on using a flushing solution that clears residuals without introducing substances that can clog the lumen or irritate the digestive tract. Water fits this role best because it is neutral, readily available, and unlikely to leave behind residues, sugars, or fats that could promote debris buildup or microbial growth. Cranberry juice contains sugars and acids and may have particulates that can cling to the tube, increasing the chance of clogging or irritation. Olive oil can coat the inside of the tube and trap debris, making it harder to clear. Isotonic saline is sterile and safe, but it adds sodium and chloride and isn’t necessary for routine flushing when water can accomplish patency without altering electrolyte balance.