THE RECOVERY CHARACTERISTICS OF SOFT TISSUES FOLLOWING REPEATED LOADING
THE RECOVERY CHARACTERISTICS OF SOFT TISSUES FOLLOWING REPEATED LOADING
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DOI：
10.1682/jrrd.1990.04.0141
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发表时间：
1990-01-01
影响因子：
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通讯作者：
BADER D L
中科院分区：
文献类型：
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作者：
BADER D L
患者支撑接口处的压力释放对于避免局部缺血引起的组织破裂是重要的，特别是对于虚弱的受试者。然而，仍然有很少的指导方针，以表明特定组织区域所需的救济水平。本文探讨了组织恢复的性质，以重复加载压缩。通过（1）使用连接到骶骨的实验系统的外部应用和（2）在动态垫上的坐骨支撑来产生负荷。在这两种情况下，在规定的时间内施加的界面压力与经皮气体张力的变化有关，后者是组织活力的指标。结果表明，两个不同的反应，重复加载。正常反应提供了快速和完全的组织恢复到经皮氧分压的无负荷值。这在所有正常受试者和一些衰弱受试者中观察到。还有一组虚弱的受试者表现出受损和延迟的组织恢复。有人提出，他们是在发展组织分解的风险最大。
Pressure relief at the patient support interface is important to avoid tissue breakdown by ischemia, particularly with debilitated subjects. However, there are still few guidelines to indicate the level of relief required for specific tissue areas. This paper examines the nature of the tissue recovery to repeated loading in compression. Loading was produced by (1) external application using an experimental system attached to the sacrum and (2) ischial support on a dynamic cushion. In both cases, the interface pressures applied for a prescribed time were related to changes in transcutaneous gas tension, the latter being an index of tissue viability. Results indicate two distinct responses to repeated loading. The normal response provides rapid and complete tissue recovery to unloaded values of transcutaneous oxygen tension. This was observed with all normal subjects and some of the debilitated subjects. There was also a group of debilitated subjects who demonstrated impaired and delayed tissue recovery. It is proposed that they are at most risk of developing tissue breakdown.