Re-oxygenation of post-mortem lividity by passive diffusion through the skin at low temperature
Re-oxygenation of post-mortem lividity by passive diffusion through the skin at low temperature
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低温下通过皮肤被动扩散对死后青斑进行再氧化
DOI：
10.1007/s12024-011-9244-7
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Neil E. I. Langlois
中科院分区：
文献类型：
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作者：
Hannah Watchman;G. Stewart Walker;Lise L. Randeberg;Neil E. I. Langlois
死后尸僵是由于死后血液在重力作用下被动沉降而形成的。由于循环停止后残留的细胞活动消耗了组织中的氧气，因此尸斑由脱氧血液组成。先前已经表明，身体的冷却会导致尸斑从暗红色/蓝色变成粉红色/红色，这是由于血红蛋白在低温下对氧气的亲和力增加。这项研究证实，这是通过皮肤被动扩散发生的，但这只能在有限的时间范围内发生。这一过程的原因及其可能的法医应用需要进一步调查。
Post-mortem hypostasis develops due to passive settling of the blood under the effect of gravity after death. Due to consumption of oxygen in the tissues by residual cellular activity after the circulation has stopped, lividity is composed of deoxygenated blood. It has been previously shown that cooling of a body causes lividity to oxygenate, changing from a dark red/blue to a pink/red color, due to hemoglobin’s increased affinity for oxygen at low temperature. This study has confirmed that this occurs by passive diffusion through the skin, but that this can only occur within a limited time frame. The reasons for this process and its potential forensic application require further investigation.