Define tube feeding syndrome.

• A. High-protein tube feedings with inadequate fluid provision
• B. Low-protein diet with excess fluids
• C. Intermittent feeding causing cramps
• D. Excess carbohydrate leading to ketosis

Answer: (A)

Tube feeding syndrome is best understood as dehydration and related electrolyte disturbances that can occur when a tube-fed patient receives a protein-rich formula without enough free water. Protein metabolism generates nitrogen, which must be excreted as urea, a process that relies on adequate hydration. If fluid provision is inadequate, the patient can become dehydrated, leading to hypernatremia, concentrated electrolytes, and increased renal strain. This risk is particularly important in those who already have limited oral intake or high protein needs, making careful balance of nutrients and fluids essential.

Providing high-protein tube feeds without sufficient fluids directly captures this concept, whereas simply having a low-protein diet with extra fluids, intermittent feeding with cramps, or excess carbohydrates with ketosis describe different issues that do not define tube feeding syndrome.