Correlation between the changes of oxidation reduction potential values and postmortem interval of heart blood in rabbits after death

Tian Tong Yang, Yong Guang Yu, Jing Bai, Hai Dong Zhang, Ting Yi Sun, Mary G. Ripple, David R. Fowler, Ling Li

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To investigate correlation between the changes of oxidation reduction potential (ORP) values of heart blood in rabbits after death and postmortem interval (PMI) at different temperatures. Methods: Forty-eight rabbits were randomly divided into 6 groups and sacrificed by air embolism. Blood samples were taken from the right ventricle of each rabbit and stored at different temperatures of 10, 15, 20, 25, 30 and 35°C, respectively. Every 4 hours from 0h to 132h postmortem, the ORP values of the blood samples were measured at different intervals by PB-21 electrochemical analyzer. The curvilinear regression equation was established by SPSS 17.0 software. The surface equation and 3D surface diagram were established by MATLAB 7.10.0 software. Results: The ORP values at different temperatures of heart blood in rabbits were highly correlated with the PMI. The ORP values rised obviously when the temperature was high and rised slowly when the temperature was low. The surface equation and 3D surface diagram were obtained. Conclusion: The surface equation and 3D surface diagram of ORP values and PMI may be used for PMI estimation at different temperatures.

Original languageEnglish (US)
JournalFa yi xue za zhi
Volume29
Issue number5
DOIs
StatePublished - Oct 2013
Externally publishedYes

Keywords

  • Forensic pathology
  • Interpolation function
  • Oxidation reduction potential
  • Postmortem interval
  • Rabbits

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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