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

What is the main characteristic of absorptive moisture barrier pastes?

1. They are highly permeable

2. They are occlusive with zinc oxide

3. They are non-adhesive

4. They contain hydrophilic properties

The correct answer is: They are occlusive with zinc oxide

The key characteristic of absorptive moisture barrier pastes is that they are occlusive with zinc oxide. This means they create a protective layer that helps to prevent moisture from reaching the skin while simultaneously protecting irritated or damaged areas. Zinc oxide is known for its skin-protecting properties and is commonly used in barrier creams to provide a physical barrier that not only helps retain moisture in the skin but also protects against irritants and provides some anti-inflammatory properties. In this context, while other characteristics such as permeability, adhesiveness, and hydrophilic properties may be relevant to different types of moisture barriers, they don't define absorptive moisture barrier pastes as clearly as their occlusive nature with zinc oxide. The focus on occlusiveness highlights their role in promoting skin health by creating a barrier that maintains optimal moisture levels while shielding the skin from external irritants.