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Mechanical Evaluation of Pressure Ulcer Prevention due to Reduced Stress in Supine Position

仰卧位压力减轻预防压疮的机械评估

基本信息

批准号：
23700663
负责人：
OSHITA Kenichi
金额：
$ 2.5万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Young Scientists (B)
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2012
项目状态：
已结题

项目摘要

Pressure ulcer is consequence of intense and prolonged mechanical loading of vascularized soft tissues, which causes cell death through metabolic deprivation and/or critical deformation. Therefore in this research we focused attention on the external causes of pressure ulcer generating mechanism. We measured shear stress and pressure on the skin surface under the occiput, the scapula and the sacrum. Furthermore, the stress states in the body were numerically examined using viscoelastic finite element method. It was shown that the stress on uppermost of subcutaneous tissue under the sacrum greatly depended on the projection shape and the size of the sacrum.

压疮是血管化软组织强烈且长期机械负荷的结果，通过代谢剥夺和/或严重变形导致细胞死亡。因此，本研究重点关注压疮发生机制的外在原因。我们测量了枕骨、肩胛骨和骶骨下皮肤表面的剪切应力和压力。此外，使用粘弹性有限元法对体内的应力状态进行了数值研究。结果表明，骶骨下最上面的皮下组织所承受的应力很大程度上取决于骶骨的投影形状和大小。