Call Evan, Pedersen Justin, Bill Brian, Black Joyce, Alves Paulo, Brindle C Tod, Dealey Carol, Santamaria Nick, Clark Michael
Department of Microbiology, Weber State University, Ogden, UT, USA.
Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, USA.
Int Wound J. 2015 Aug;12(4):408-13. doi: 10.1111/iwj.12123. Epub 2013 Jul 30.
Recent clinical research has generated interest in the use of sacral wound dressings as preventive devices for patients at risk of ulceration. This study was conducted to identify the modes of action through which dressings can add to pressure ulcer prevention, for example, shear and friction force redistribution and pressure distribution. Bench testing was performed using nine commercially available dressings. The use of dressings can reduce the amplitude of shear stress and friction reaching the skin of patients at risk. They can also effectively redirect these forces to wider areas which minimises the mechanical loads upon skeletal prominences. Dressings can redistribute pressure based upon their effective Poisson ratio and larger deflection areas, providing greater load redistribution.
近期的临床研究引发了人们对使用骶部伤口敷料作为有溃疡风险患者的预防装置的兴趣。开展这项研究是为了确定敷料可增加预防压疮的作用方式，例如，剪切力和摩擦力的重新分布以及压力分布。使用九种市售敷料进行了台架试验。使用敷料可降低到达有风险患者皮肤的剪切应力和摩擦力的幅度。它们还可有效地将这些力重新导向更宽的区域，从而将骨骼突出部位的机械负荷降至最低。敷料可根据其有效泊松比和更大的挠曲面积重新分布压力，提供更好的负荷再分布。
