How much should a stoma protrude in order to use a flat barrier?

• A. More than 1/2 inch
• B. More than 3/4 inch
• C. At least 1/4 inch
• D. Less than 1/2 inch

Answer: (A)

Stoma barrier choice depends on how far the stoma sticks out from the abdomen. A flat barrier works best when the stoma has enough projection so the opening can sit around the stoma and the barrier can lie flat against the skin without gaps. When the stoma protrudes more than about half an inch, there’s enough contour for a flat barrier to seal properly and protect the surrounding skin. If the stoma is shallow or flush, a convex barrier is usually needed to apply gentle inward pressure around the stoma and prevent leakage. So, the amount described—more than half an inch—fits the situation where a flat barrier is appropriate.