In a loop stoma, what is the primary function of the proximal and distal openings?

In a loop stoma, what is the primary function of the proximal and distal openings?

• A. Both openings carry stool.
• B. Proximal opening carries stool; distal opening carries mucus.
• C. Distal opening carries stool; proximal carries mucus.
• D. Only proximal opening is functional.

Answer: (B)

In a loop stoma, the bowel is brought to the surface as a loop, creating two openings: the proximal and the distal. The proximal opening acts as the outlet for stool because it drains the upstream section of the bowel where fecal matter is formed and carried toward the large intestine. The distal opening, coming from the downstream segment, continues to secrete mucus from goblet cells and typically does not pass stool, so its main output is mucus. This separation guides care and appliance design, with the proximal side handling stool and the distal side handling mucus.

In a loop stoma, the bowel is brought to the surface as a loop, creating two openings: the proximal and the distal. The proximal opening acts as the outlet for stool because it drains the upstream section of the bowel where fecal matter is formed and carried toward the large intestine. The distal opening, coming from the downstream segment, continues to secrete mucus from goblet cells and typically does not pass stool, so its main output is mucus. This separation guides care and appliance design, with the proximal side handling stool and the distal side handling mucus.