An MRI investigation of the effects of user anatomy and wheelchair cushion type on tissue deformation
An MRI investigation of the effects of user anatomy and wheelchair cushion type on tissue deformation
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DOI：
10.1016/j.jtv.2017.04.001
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发表时间：
2018-02-01
影响因子：
2.5
通讯作者：
Gefen, Amit
中科院分区：
文献类型：
--
作者：
Brienza, David;Vallely, Jaxon;Gefen, Amit
研究目的：组织变形被认为是压力损伤的重要危险因素。本研究探讨了解剖结构和轮椅垫类型对tissue deformation.Materials和Methods的影响：直接三维组织变形的反应进行了测量，为6名参与者坐在6个不同的轮椅垫使用MR成像。两名参与者在评估的一年内患有创伤性脊髓损伤（SCI），两名参与者在至少13年前患有创伤性SCI，两名参与者没有SCI。组织变形进行了量化使用的坐骨结节（IT）之间的卸载和加载（坐）conditions.Results之间的体积的差异：SCI的参与者往往有较少的肌肉组织体积下的IT，而坐在没有SCI的参与者相比。在负载条件下，肌肉和脂肪体积的减少因垫子和参与者而异。较高的界面压力往往与较低的卸载tissue thickness.Conclusion：该研究表明，没有一个单一的缓冲类型测试产生的最低量的组织变形在所有参与者。个体解剖结构和衬垫类型影响组织的变形反应和相关的压力损伤风险。(C)2017年组织活力协会。由爱思唯尔有限公司出版。保留所有权利。
Aim of the study: Tissue deformation is recognized as an important risk factor for pressure injuries. This study investigated the effects of anatomy and wheelchair cushion type on tissue deformation.Materials and methods: Direct 3-dimensional tissue deformation response was measured for six participants sitting on six different wheelchair cushions using MR imaging. Two participants had a traumatic spinal cord injury (SCI) within one year of the assessment, two sustained traumatic SCI at least 13 years prior, and two were without SCI. Tissue deformation was quantified using the difference in volume of tissue beneath the ischial tuberosity (IT) between unloaded and loaded (sitting) conditions.Results: The participants with SCI tended to have less muscle tissue volume beneath their ITs while sitting compared to participants without SCI. Reductions in muscle and fat volumes in the loaded conditions varied depending on both cushion and participant. Higher interface pressures tended to be associated with lower unloaded tissue thicknesses.Conclusion: The study showed no single cushion type tested produced the lowest amount of tissue deformation across all participants. Individual anatomy and cushion type affect deformation response of tissue and related pressure injury risk. (C) 2017 Tissue Viability Society. Published by Elsevier Ltd. All rights reserved.