Which of the following is NOT listed as a possible cause of abdominal distention during enteral tube feeding?

• A. Rapid administration of feeding
• B. Use of hyperosmolar solution
• C. Medications that slow peristalsis
• D. Dehydration

Answer: (D)

Abdominal distention during enteral feeding is mainly driven by factors that increase the gut’s load or slow its movement. Feeding too quickly overwhelms the gut’s ability to accommodate the volume, leading to gas buildup, bloating, and distention. Hyperosmolar formulas pull water into the intestinal lumen, increasing luminal volume and promoting distention and discomfort. Medications that slow peristalsis reduce gut motility, allowing gas and fluid to accumulate and causing distention.

Dehydration, while important for overall fluid balance, is not a typical direct trigger for distention in this context. It can affect overall perfusion and may contribute to broader GI problems in severe cases, but the common mechanisms directly linked to distention with tube feeds are rate, osmolarity, and motility effects.