Pressure Distribution Comparison among Standard Seating Surfaces and Strap Seating System

John Damiao, Anthony Blair, Nicole Martinez, Rachel Reyes and Brenda Mahon

Global Journal of Health Science, 2023, vol. 15, issue 7, 35-40

Abstract: AIMS- Pressure injuries (PIs) are common issues that can be minimized through the use of pressure-redistributing support surfaces. Cushions that provide immersion and contour are considered the most effective for pressure relief; however, others are readily available on the market. The aim of this study is to determine how a wheelchair equipped with Comfort Tension Seating®(CTS) compares to standard sling seating, foam, and a high-end pressure redistributing contoured cushion. MATERIALS & METHODS- Pressure redistribution qualities as measured through peak pressure index (PPI) using pressure mapping technology were gathered on four different seating surfaces -standard sling seat, CTS, and two cushion types flat cross-section foam, contoured-cushion, and CTS. Twenty non-disabled participants trialed each cushion for five minutes each. The methods of this study are described and outcomes analyzed by comparing the PPI and comfort of the four cushions. RESULTS- A Wilcoxon signed-rank test, and related samples Friedman’s two-way analysis of variance by ranks (ANOVA) was calculated. The results show that there is a significant difference between each of the cushions in comfort and pressure redistribution. There was a statistically significant difference in mean PPI between the three groups in which the CTS performed better than the sling and flat cross-section foam, but not quite as good as the high-end contoured cushion (p <.001). CONCLUSION- While not as optimal as the contoured M2 foam cushion, the CTS seating surface appears to provide superior pressure-redistributing performance compared to sling and flat cross-section foam. This suggests that the CTS could be used as a support surface for many applications, except for individuals with high-level PI risk, without using tilt and recline features.

Date: 2023
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