Seiler W O, Stähelin H B
J Am Geriatr Soc. 1979 Jul;27(7):298-301. doi: 10.1111/j.1532-5415.1979.tb06043.x.
Pressure is a crucial factor in the formation of decubitus ulcers. To elucidate the effect of imposed skin pressure, a new cutaneous oxygen sensor was used to measure the skin oxygen tension under increasing pressure upon skin tissue at "hard sites" (bony prominences) and at "soft sites" (muscle-padded areas). At hard sites the skin oxygen tension fell rapidly under increasing pressure (y = 90.9--0.39. X; r = 0.98) from an initial value of 86.4 +/- 10.6 to 20.2 +/- 12.1 mm Hg under an imposed skin pressure load of 175 gm/cm 2. At soft sites a pressure load of 175 gm/cm 2 decreased the skin oxygen tension only from 82.9 +/- 5.8 to 71.4 +/- 10.0 mm Hg. These results may explain why hard sites (bony prominences) are preferential areas for decubitus ulcer formation.
压力是压疮形成的关键因素。为了阐明施加的皮肤压力的影响，一种新型皮肤氧传感器被用于测量在“硬部位”（骨隆突）和“软部位”（肌肉垫部位）对皮肤组织施加递增压力时的皮肤氧张力。在硬部位，随着压力增加，皮肤氧张力迅速下降（y = 90.9 - 0.39X；r = 0.98），在175克/平方厘米的皮肤压力负荷下，从初始值86.4±10.6毫米汞柱降至20.2±12.1毫米汞柱。在软部位，175克/平方厘米的压力负荷仅使皮肤氧张力从82.9±5.8毫米汞柱降至71.4±10.0毫米汞柱。这些结果或许可以解释为什么硬部位（骨隆突）是压疮形成的优先区域。
