Abstract:

BACKGROUND: Pressure sore or pressure ulcer is a comprehensive complication in clinic. Although there are many anti-pressure ulcer materials and drugs, their effects are temporary rather than permanent. Therefore, to explore the human body pressure distribution reasonable to prevent pressure ulcer is of great consequence.
OBJECTIVE: Through changing supine positions, to realize the different human body pressure distribution, and then to study the relationship between human body pressure distribution and supine positions so as to explore more reasonable pressure distribution in the human body.
METHODS: Human body pressure distribution indexes were measured at different supine positions under the different air pressure of the mattress by using the pressure distribution measurement and analysis of the XSENSOR system. Then, the experimental data were collected and tidied through Excel and MATLAB software to compare and analyze the human body pressure distribution indexes under different supine positions using SPSS 16.0 statistical analysis software. t-test was done for pairwise comparisons of body pressure indexes.
RESULTS AND CONCLUSION: P values for human body pressure distribution indexes under different supine positions were less than 0.05, indicating that changing supine positions exerts an important influence to human body pressure distribution. When the angle of the leg elevation-the back elevation was 10º-0º, the human body pressure distribution was more reasonable resulting in the biggest pressure of the whole body and the least heel pressure, which is the ideal human body pressure distribution.