Oertwich P A, Kindschuh A M, Bergstrom N
College of Nursing, University of Nebraska Medical Center, USA.
Res Nurs Health. 1995 Dec;18(6):481-8. doi: 10.1002/nur.4770180604.
The purpose of this study was to (a) determine whether small shifts in body weight change pressure and blood flow under a bony prominence, and (b) identify the magnitude of change in blood flow and pressure under a bony prominence over time. Blood flow and interface pressure in two positions (lateral oblique/supine) with two small shifts in each position (thigh/rib cage) were evaluated over time in 50 nursing home residents. There was a significant decrease in interface pressure under the trochanter through the small shifts intervention, F = 5.36, p < .01. There was a significant decrease in interface pressure, F = 3.90, p < .05, and a significant increase in blood flow, F = 4.85, p < .05, under the sacrum through the small shifts intervention. Blood flow and interface pressure did not change significantly over time.
（a）确定体重的微小变化是否会改变骨突下的压力和血流；（b）确定骨突下血流和压力随时间的变化幅度。对50名疗养院居民进行了长期评估，测量了两个体位（侧斜位/仰卧位）下各有两次微小位移（大腿/胸廓）时的血流和界面压力。通过微小位移干预，转子下的界面压力显著降低，F = 5.36，p < 0.01。通过微小位移干预，骶骨下的界面压力显著降低，F = 3.90，p < 0.05，血流显著增加，F = 4.85，p < 0.05。血流和界面压力随时间未发生显著变化。
