期刊
COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING
卷 15, 期 1, 页码 59-71出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10255842.2010.539208
关键词
pressure ulcer; deep tissue injury; finite element model; spinal cord injury; elderly; risk factor
Pressure ulcers (PU) are localised damage to skin and underlying tissues, caused by sustained tissue deformations and ischaemia. PU typically appear in insensitive or immobile patients, e. g. those with spinal cord injury (SCI) or geriatric patients. As these patients often experience fluctuations in blood pressure, and are also exposed to high-shear loads in their weight-bearing soft tissues during wheelchair sitting or bed rest, we used an inverse finite element method to determine the effects of capillary blood pressure (CBP) and shear deformations on occurrence of mechanical collapse in capillaries. We studied collapse in straight, U-shaped and bifurcated capillaries. All model configurations were consistent in demonstrating that the level of CBP has a considerable influence on the likelihood of capillary collapse in the physiological CBP range, particularly if shear is present. Our modelling therefore suggests that low CBP is a 'suspect' risk factor for PU in SCI and geriatric patients.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据