Seiler W O, Stähelin H B
Fortschr Med. 1979 Apr 12;97(14):675-7.
Pressure is of crucial importance in the formation of decubitus ulcers. In order to elucidate the effect of imposed skin pressure we measured with a new cutaneous oxygen sensor the skin oxygen tension under increasing pressure upon skin tissue on hard sites (bony prominences) and upon soft sites (muscle padded areas). On hard sites the skin oxygen tension fell rapidly under increasing pressure (y = 90.9--0.39 x/r = 0.98) from initially 86.4 +/- 10.6 to 20.2 +/- 12.1 mmHg under an imposing skin pressure of 175 g/cm2. On soft sites a pressure load of 175 g/cm2 decreased the skin oxygen tension only from 82.9 +/- 5.8 to 71.4 +/- 10.0 mmHg. Our results may explain why hard sites (bony prominences) are preferential areas in decubitus ulcer formation.
压力在压疮形成过程中至关重要。为了阐明施加的皮肤压力的影响，我们使用一种新型皮肤氧传感器，测量了硬部位（骨隆突）和软部位（肌肉垫部位）的皮肤组织在压力增加时的皮肤氧张力。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），在施加175 g/cm²皮肤压力时，从最初的86.4 ± 10.6 mmHg降至20.2 ± 12.1 mmHg。在软部位，175 g/cm²的压力负荷仅使皮肤氧张力从82.9 ± 5.8 mmHg降至71.4 ± 10.0 mmHg。我们的结果或许可以解释为何硬部位（骨隆突）是压疮形成的优先区域。
