RESUMO
Objective: To compare the coefficient of friction (CoF) of skin against fabric when the skin is covered with a liquid barrier film versus a silicone dressing, relative to a bare skin baseline. Approach: A laboratory instrument allowing the measurement of friction between two surfaces was used to compare the CoF between a fabric representing bed linen (100% cotton) and the skin of two laboratory operators, either bare (dry or hydrated) or covered with a liquid barrier film or a silicone dressing. Results: The CoF of hydrated skin was over twice the value found for dry skin. The liquid barrier film product reduced the CoF of hydrated skin to a greater extent than the silicone dressing. Innovation and Conclusion: Silicone dressings have recently been promoted to help prevent pressure ulcers. Published data have shown that their CoF is lower than other dressings, but the data were not compared to bare skin. We found that a liquid barrier film provided a greater reduction in the CoF of skin against linen than a silicone dressing. In the context of preventative use (e.g., application on intact skin) to reduce the risk of pressure ulcers, applying a liquid barrier film may reduce friction better than a silicone dressing.