Layered Foam Dressing Over a Silicone Contact Layer for Granulating Wounds

Recommended Dressing System

The United Kingdom guidelines for extensive skin wounds advise a layered approach: a primary non‑adherent silicone contact layer (Mepitel) to protect the wound bed and prevent trauma during changes, topped with a secondary foam dressing (e.g., Exu‑Dry or Mepilex) to absorb exudate while preserving an optimal healing environment. 1, 2
Exu‑Dry (Smith & Nephew) is specifically endorsed in high‑quality wound‑care guidelines as a secondary foam or burn dressing for exudate collection when applied over non‑adherent silicone layers such as Mepitel. 1, 2

Effective exudate management is essential for granulating wounds; excess moisture leads to maceration and delayed healing, whereas insufficient absorption promotes bacterial growth. 2
Foam dressings provide several key advantages:
The combination of a silicone contact layer with a foam secondary dressing is well‑established in wound‑care guidelines for promoting granulation tissue formation. 1, 2

For wounds that are exposed to contamination and mechanical stress (e.g., in occupational settings), the layered system protects the wound from trauma and reduces the risk of infection. 3
Occlusive dressings, such as the described layered construct, have been shown to enhance wound healing compared with dry dressings. 4
The secondary foam dressing should be changed every 1–3 days based on exudate levels, while the underlying Mepitel layer can remain in place for up to 5–7 days unless it becomes saturated or displaced. 1, 2

Clinicians should monitor for signs of infection—including increased redness, swelling, foul‑smelling drainage, heightened pain, or fever—and remove the dressing for medical evaluation if any of these occur. 3, 4