Zhou Rui-Qing, Zhang Fu, Wang Ye, Liao Zhi-Gang
West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
Fa Yi Xue Za Zhi. 2008 Feb;24(1):12-4.
To investigate the correlation between postmortem interval (PMI) and the changes of electrical conductivity in vitreous humor in rabbits after death.
The changes of electrical conductivity in vitreous humor in rabbits were measured using the conductivity meter under 30 degrees C during 0-48 hours and 20 degrees C during 0-120 hours after death.
Electrical conductivity in vitreous humor in rabbits increased gradually under 30 degrees C and 20 degrees C from 0 to 48 hours and from 0-120 hours after death. The formulae of the relationship between PMI and conductivity under 30 degrees C and 20 degrees C were obtained by statistical analysis and the correlation coefficients were 0.970 and 0.983 (both P < 0.01), respectively.
The increase of electrical conductivity in vitreous humor in rabbits after death may be used as the relatively objective parameter for PMI estimation.
探讨家兔死后死后间隔时间（PMI）与玻璃体液电导率变化之间的相关性。
在死后0 - 48小时内于30℃下以及死后0 - 120小时内于20℃下，使用电导率仪测量家兔玻璃体液的电导率变化。
家兔玻璃体液的电导率在死后0至48小时内在30℃下以及0至120小时内在20℃下均逐渐升高。通过统计分析得出了30℃和20℃下PMI与电导率之间关系的公式，相关系数分别为0.970和0.983（均P < 0.01）。
家兔死后玻璃体液电导率的增加可作为估计PMI的相对客观参数。
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