Al-Majid Sadeeka, Vuncanon Barbara, Carlson Nika, Rakovski Cyril
AORN J. 2017 Sep;106(3):194-200. doi: 10.1016/j.aorn.2017.07.002.
Offloading a patient's heels during supine surgical procedures is a common practice to prevent heel pressure injuries. This practice may increase sacral pressure and jeopardize sacral skin integrity, but prophylactic dressings may help protect sacral skin. The purpose of this study was to examine the effects of offloading the heels and of multilayered silicone foam dressings on sacral pressure. We measured the sacral pressure of 50 healthy volunteers using a pressure-mapping system under four conditions: heels not offloaded and sacral dressing applied, heels offloaded and dressing applied, heels not offloaded and no dressing, and heels offloaded and no dressing. We used linear mixed-effects modeling to compare the effects of these conditions on sacral pressure. Offloading the heels significantly increased sacral pressure (P < .001), whereas the dressing had no effect on sacral pressure (P = .49). Offloading a patient's heels may increase the risk of sacral pressure injuries.
在仰卧位手术过程中减轻患者足跟压力是预防足跟压力性损伤的常见做法。这种做法可能会增加骶骨压力并危及骶骨皮肤完整性，但预防性敷料可能有助于保护骶骨皮肤。本研究的目的是探讨足跟减压和多层硅胶泡沫敷料对骶骨压力的影响。我们使用压力映射系统在四种情况下测量了50名健康志愿者的骶骨压力：足跟未减压且应用骶骨敷料、足跟减压且应用敷料、足跟未减压且未应用敷料、足跟减压且未应用敷料。我们使用线性混合效应模型来比较这些情况对骶骨压力的影响。足跟减压显著增加了骶骨压力（P <.001），而敷料对骶骨压力没有影响（P =.49）。减轻患者足跟压力可能会增加骶骨压力性损伤的风险。
