What is a key expected outcome when using a convex barrier on a flush stoma?

• A. Increase stoma protrusion
• B. Decrease skin irritation
• C. Reduce adhesion to skin
• D. Improve moisture management

Answer: (A)

Using a convex barrier on a flush stoma primarily aims to increase stoma protrusion to create a better seal. The curved, outward-facing surface of a convex barrier applies gentle pressure around the peristomal skin, helping a stoma that sits level with or below the skin to push outward slightly. This increased protrusion makes the barrier edge engage more securely with the skin, reducing gaps where leaks can occur and improving overall adhesion of the appliance.

While a better seal can indirectly reduce skin irritation from leakage, and moisture management is important for appliance performance, the main outcome of using convex protection on a flush stoma is to promote protrusion and improve seal integrity.