Development and validity of a new model for assessing pressure redistribution properties of support surfaces
Development and validity of a new model for assessing pressure redistribution properties of support surfaces
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DOI：
10.1016/j.jtv.2010.12.002
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发表时间：
2011-05-01
影响因子：
2.5
通讯作者：
Sakamoto, Jirou
中科院分区：
文献类型：
--
作者：
Matsuo, Junko;Sugama, Junko;Sakamoto, Jirou
压疮是一个常见的问题，尤其是在年长的患者中。在日本，大多数住院老年人营养不良，并表现出极端的骨质突出(EBP)。EBP是压疮发生的重要因素，这是由于EBP皮肤表面集中的界面压力增加所致。建议使用支撑面预防压疮。然而，目前评价支撑面压力再分布的模棱两可的标准是不充分的。由于压力重分布受到体型和姿势的影响，因此使用人类受试者进行评估是有限的。因此，可以替代人类的模型是必要的。我们开发了一个新的EBP模型，该模型基于100名卧床不起的老年人的人体测量，包括骨盆倾斜度。本模型与卧床不起的老年受试者的压力分布图的比较表明，最大接触压力值、臀部接触压力值和骨隆起率密切对应。这表明该模型很好地逼近了老年EBP患者的特征。随后，我们通过定量评估由浸泡、包络和接触面积变化组成的压力再分布函数来检验模型的有效性。该模型能够检测到聚氨酯泡沫硬度的差异、气垫内部压力的差异以及压力切换模式期间的顺序变化。这些结果证明了我们的新的臀部模型在评估各种表面的压力重分布方面的有效性。(C)2010年组织活力学会。爱思唯尔有限公司出版。保留所有权利。
Pressure ulcers are a common problem, especially in older patients. In Japan, most institutionalized older people are malnourished and show extreme bony prominence (EBP). EBP is a significant factor in the development of pressure ulcers due to increased interface pressure concentrated at the skin surface over the EBP.The use of support surfaces is recommended for the prophylaxis of pressure ulcers. However, the present equivocal criteria for evaluating the pressure redistribution of support surfaces are inadequate. Since pressure redistribution is influenced by physique and posture, evaluations using human subjects are limited. For this reason, models that can substitute for humans are necessary. We developed a new EBP model based on the anthropometric measurements, including pelvic inclination, of 100 bedridden elderly people. A comparison between the pressure distribution charts of our model and bedridden elderly subjects demonstrated that maximum contact pressure values, buttock contact pressure values, and bone prominence rates corresponded closely. This indicates that the model provides a good approximation of the features of elderly people with EBP. We subsequently examined the validity of the model through quantitative assessment of pressure redistribution functions consisting of immersion, envelopment, and contact area change. The model was able to detect differences in the hardness of urethane foam, differences in the internal pressure of an air mattress, and sequential changes during the pressure switching mode. These results demonstrate the validity of our new buttock model in evaluating pressure redistribution for a variety of surfaces. (C) 2010 Tissue Viability Society. Published by Elsevier Ltd. All rights reserved.