What is a primary complication associated with using a convex pouching system?

Using a convex pouching system primarily addresses specific challenges associated with stomas, especially for patients with retracted or flush stomas. While this type of system can indeed provide benefits, a notable complication is the potential for increased pressure on the stoma.

Convex pouching systems are designed to apply pressure against the skin surrounding the stoma to create a better seal and improve pouch adherence. However, if the convexity is too pronounced or the pouch is applied too tightly, this pressure can lead to various issues. The pressure may cause discomfort, impair blood flow to the stoma, or even lead to ischemia over time. This makes it essential for nurses and healthcare providers to monitor patients for signs of increased pressure or irritation around the stoma site.

In comparison, while decreased stoma visibility, improved adhesion, and reduction in skin irritation are factors considered when using a convex pouching system, they do not pose the same level of risk as the potential for increased pressure on the stoma itself. Increased pressure is a direct consequence of the mechanics of how the convex pouch interacts with the patient's body, making it a primary concern in this context.