Physical Therapy Assistant Practice Exam

What is the method referred to when applying a moistened gauze dressing to necrotic tissue that is allowed to dry completely?

1. Wet-to-dry dressing

2. Hydrogel application

3. Enzymatic debridement

4. Occlusive dressing

The correct answer is: Wet-to-dry dressing

The method of applying a moistened gauze dressing to necrotic tissue, which is then allowed to dry completely, is known as a wet-to-dry dressing. This technique is utilized in wound care to assist in the debridement process. When the moist gauze comes into contact with necrotic tissue, it adheres to the tissue as it dries, allowing for the removal of dead tissue upon dressing change. This approach helps in promoting a clean wound bed. The wet-to-dry dressing method is particularly effective because it combines moisture at the initial application, which aids in softening the necrotic tissue, with the drying process that supports the mechanical removal of debris during subsequent changes. It is important to note that while this method has its place, it can also cause some pain and trauma to surrounding healthy tissue when it is removed. Other techniques mentioned in the choices, such as hydrogel application, focus on maintaining a moist wound environment and do not involve the drying process essential to the wet-to-dry method. Enzymatic debridement involves the use of topical agents that selectively digest or dissolve tissue, rather than relying on the mechanical properties of a dressing. Lastly, occlusive dressings are designed to prevent moisture loss and