Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

How can a skin barrier be protected from soiling when using zinc oxide?

1. Leaving it exposed

2. Using cotton balls

3. Applying a clear film dressing over it

4. Only using zinc oxide products

The correct answer is: Applying a clear film dressing over it

The application of a clear film dressing over a skin barrier treated with zinc oxide is an effective method for protection from soiling. This dressing serves multiple purposes; it acts as a physical barrier that helps to keep external contaminants like feces or urine away from the skin. Additionally, clear film dressings are breathable, allowing moisture vapor to escape while keeping a protective seal against liquid and solid matter. Using zinc oxide alone provides a barrier to irritation but does not prevent exposure to potential soiling incidents. The clear film dressing enhances the protective effect of zinc oxide by maintaining its position while adding an extra layer of security. The dressing also helps to keep the zinc oxide in place, which can be beneficial for prolonged use, reducing the need for frequent reapplication. In contrast, leaving the area exposed would not provide any protection against soiling, cotton balls might absorb some moisture but are not an effective barrier, and solely using zinc oxide products may not suffice in preventing external contaminants from making contact with the skin.