Development and validity of a new model for assessing pressure redistribution properties of support surfaces

Junko Matsuo, Junko Sugama, Hiromi Sanada, Mayumi Okuwa, Toshio Nakatani, Chizuko Konya, Jirou Sakamoto

研究成果: Article査読

16 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)55-66
ページ数12
ジャーナルJournal of Tissue Viability
20
2
DOI
出版ステータスPublished - 05-2011
外部発表はい

All Science Journal Classification (ASJC) codes

  • 病理学および法医学
  • 皮膚病学

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