Sachse R E, Fink S A, Klitzman B
Durham Veterans Administration Hospital, Department of Cell Biology and Biomedical Engineering, Duke University, Durham, NC, USA.
Plast Reconstr Surg. 1998 Dec;102(7):2381-7. doi: 10.1097/00006534-199812000-00017.
Multimodality evaluation of six different support surfaces was performed measuring interface pressure, transcutaneous oxygen tension, and blood flow in pressure ulcer-prone areas on healthy subjects. Interface pressure was measured with a flexible force-sensing resistor array. The interface pressure distribution patterns of 10 healthy male volunteers were measured in the supine and lateral positions using a pressure sensor (force sensing resistor) array. Transcutaneous oxygen (TcPO2) and laser Doppler flowmeter probes were placed over the sacrum, the right trochanter, and the right ischium. Data were recorded for 15 minutes each with the subject in the supine and lateral decubitus positions. Statistically significant differences (p < 0.05) between the various surfaces could be observed for blood flow and pressure measurements, especially in the lateral position over the trochanter and for the TcPO2 measurements in the supine position over the sacrum. We conclude that measuring interface pressure, transcutaneous oxygen tension, and blood flow allows a more thorough evaluation of the physiologic effects of special support surfaces than any single technique. Future studies on patients will assess algorithms for using these measurement techniques to predict the efficacy of various support surfaces in minimizing pressure ulceration.
对六种不同的支撑面进行了多模态评估，测量了健康受试者易发生压疮部位的界面压力、经皮氧分压和血流量。使用柔性力敏电阻阵列测量界面压力。使用压力传感器（力敏电阻）阵列在仰卧位和侧卧位测量了10名健康男性志愿者的界面压力分布模式。将经皮氧（TcPO2）探头和激光多普勒流量计探头放置在骶骨、右转子和右坐骨上。受试者处于仰卧位和侧卧位时，分别记录15分钟的数据。在血流量和压力测量方面，尤其是在转子上方的侧卧位以及骶骨上方仰卧位的TcPO2测量中，可以观察到不同支撑面之间存在统计学显著差异（p < 0.05）。我们得出结论，与任何单一技术相比，测量界面压力、经皮氧分压和血流量能够更全面地评估特殊支撑面的生理效应。未来针对患者的研究将评估使用这些测量技术来预测各种支撑面在最小化压疮方面疗效的算法。
