On the study of postmortem tissue changes’ dynamics according to impedance metrics data

Tolmachev I.A.; Lavrukova O.S.; Kazakova E.L.; Danilova I.V.; Polyakov A.Yu.

doi:https://doi.org/10.17116/sudmed20236606124

I.A. Tolmachev

Kirov Military Medical Academy

ORCID: 0000-0002-5893-520X

O.S. Lavrukova

Petrozavodsk State University

ORCID: 0000-0003-0620-9406

E.L. Kazakova

Petrozavodsk State University

ORCID: 0000-0002-8670-5380

I.V. Danilova

Petrozavodsk State University

ORCID: 0000-0001-7031-4580

A.Yu. Polyakov

Bureau of Forensic Examination

ORCID: 0000-0003-0067-8850

On the study of postmortem tissue changes’ dynamics according to impedance metrics data

Authors:

I.A. Tolmachev, O.S. Lavrukova, E.L. Kazakova, I.V. Danilova, A.Yu. Polyakov

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Journal: Forensic Medical Expertise. 2023;66(6): 24‑27

DOI: 10.17116/sudmed20236606124

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To cite this article:

Tolmachev IA, Lavrukova OS, Kazakova EL, Danilova IV, Polyakov AYu. On the study of postmortem tissue changes’ dynamics according to impedance metrics data. Forensic Medical Expertise. 2023;66(6):24‑27. (In Russ.)
https://doi.org/10.17116/sudmed20236606124

Подписка 2026 Судебно-медицинская экспертиза (Forensic Medical Expertise)

Использование инфографики авторами научных работ

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OBJECTIVE

To find a way and form of presenting impedance metrics data to clarify prescription of death coming in a comprehensive assessment.

MATERIAL AND METHODS

The impedance of biological objects was measured depending on prescription of death coming in standardized conditions (air temperature +4 °C, humidity 45%). The main examined postmortem period was 1 months. Measurements were made on 3 diagnostic zones of biological object and for 5 current frequency of the study. A total of 2100 readings were taken.

RESULTS AND CONCLUSION

The studies performed in standardized conditions have showed that using impedance metrics method to diagnose prescription of death coming is possible. The analysis of only absolute impedance values is not sufficient to clarify prescription of death coming due to its undulating changes. The additional use of relative coefficients, characterizing impedance dispersion, is suggested. The study of possible using the impedance indicators of corpse’s tissues to determine prescription of death coming should be performed with consideration to pathomorphology of degradation. Further study of impedance dynamics when corpse is under different conditions is necessary for development of a working algorithm to determine prescription of death coming based on tissue impedance.

Keywords:

forensic medical examination

prescription of death coming

late postmortem period

impedance

model objects

Authors:

I.A. Tolmachev

Kirov Military Medical Academy

ORCID: 0000-0002-5893-520X

O.S. Lavrukova

Petrozavodsk State University

ORCID: 0000-0003-0620-9406

E.L. Kazakova

Petrozavodsk State University

ORCID: 0000-0002-8670-5380

I.V. Danilova

Petrozavodsk State University

ORCID: 0000-0001-7031-4580

A.Yu. Polyakov

Bureau of Forensic Examination

ORCID: 0000-0003-0067-8850

Received:

19.07.2023

Accepted:

05.09.2023

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Receiver 19.07.2023