Which of the following is NOT a research-based method to restore patency to clogged feeding tubes?

• A. Water flush
• B. Cranberry juice flush
• C. Mechanical declogging devices
• D. Pancreatic enzyme mixed with sodium bicarbonate

Answer: (B)

Restoring patency in clogged feeding tubes relies on methods that have shown evidence in clinical practice. Water flushes are a staple first-line step because they physically push out or dilute minor obstructions and help prevent clogs from forming in the first place. Mechanical declogging devices provide a direct, physical means to break apart or remove a clog, and their use is supported by research and clinical protocols. Pancreatic enzyme mixed with sodium bicarbonate has been explored in studies as an enzymatic approach to dissolve certain types of plugs, so it carries some research basis behind it. Cranberry juice flush, however, does not have credible research backing for effectively unclogging feeding tubes. It lacks a demonstrated mechanism to dissolve or remove blockages and is not supported by robust data, making it the non-research-based option.