[Finite-element simulation of ethanol diffusion in nonencapsulated subdural hematomas].

Q4 Medicine Sudebno-Meditsinskaya Ekspertisa Pub Date : 2024-01-01 DOI:10.17116/sudmed20246701120

G V Nedugov

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引用次数: 0

Abstract

Objective: Determination of the diffusion regularities of ethanol in nonencapsulated subdural hematomas.

Material and methods: The finite-element modelling of the ethanol's concentration field for the non-lethal nonencapsulated subdural hematoma using the ELCUT 6.5 application was carried out.

Results: A two-dimensional finite-element concentration field model of a low volume subdural hematoma, taking into account the different boundary conditions of ethanol diffusion, has been developed. It has been proven that the diffusion rate of ethanol is determined by the impact of its initial concentration field, the level of ethanolemia, the geometry of hematoma, as well as the diffusion properties of bounding with hematoma tissues. The possibility of ethanol diffusion in the content of a nonalcoholic hematoma from bounding tissues was shown. The central region of hematoma has been found to have the highest ethanol concentration stability. If the diffusion's boundary conditions are not identical, the indicated area shifts to the surface of hematoma with a lower density of diffusion's flow.

Conclusion: It is recommended to interpret the postmortem concentration of ethanol in the most diffusion-resistant region of hematoma as the minimum limit of ethanolemia during the hematoma formation.

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[非包裹性硬膜下血肿中乙醇扩散的有限元模拟]。

目的：确定乙醇在无包膜硬膜下血肿中的扩散规律：确定乙醇在无包囊硬膜下血肿中的扩散规律：使用 ELCUT 6.5 应用程序对非致死性无囊硬膜下血肿的乙醇浓度场进行有限元建模：考虑到乙醇扩散的不同边界条件，建立了低容量硬膜下血肿的二维有限元浓度场模型。事实证明，乙醇的扩散速率取决于其初始浓度场、乙醇血症水平、血肿几何形状以及与血肿组织结合的扩散特性的影响。研究表明，非酒精性血肿内容物中的乙醇有可能从绑定组织中扩散出来。研究发现，血肿中心区域的乙醇浓度稳定性最高。如果扩散的边界条件不一致，则指示区域会转移到扩散流密度较低的血肿表面：结论：建议将血肿最不易扩散区域的尸检乙醇浓度解释为血肿形成过程中乙醇血症的最低限度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sudebno-Meditsinskaya Ekspertisa Medicine-Pathology and Forensic Medicine

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： The journal is concerned with the theory and practice of forensic medicine - the problems of thanatology, traumatology, toxicology, serology, forensic obstetrics, forensic dentistry, forensic psychiatry, forensic chemistry, physicotechnical methods of investigation, history of forensic medicine and some problems of criminology and legal laws related to forensic medicine. It publishes original studies by Russian authors, casuistry surveys, abstracts and reviews of Russian and foreign literature, scientific information, reports on scientific conferences.