Inoue Hiromasa, Ishida Tomomi, Tsuji Akiko, Kudo Keiko, Ikeda Noriaki
Department of Forensic Pathology and Sciences, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582, Japan.
Leg Med (Tokyo). 2005 Mar;7(2):96-102. doi: 10.1016/j.legalmed.2004.09.002.
In medico-legal autopsies for drowned bodies, the location of drowning needs to be determined. To investigate the usefulness of electrolyte analysis in pleural effusion as an indicator of the location where the deceased has drowned, we determined the concentrations of electrolytes in the pleural effusion of rats drowned in four kinds of water. The concentrations of sodium and chloride ions in the pleural effusion of rats that drowned in seawater were significantly greater than those of rats that drowned in freshwater at both 1 day and 3 days after drowning. The concentration of potassium ions in pleural effusion 1 day after drowning showed no difference between each group, although it then increased from 1 to 3 days after seawater drowning, whereas it decreased from 1 to 3 days after freshwater drowning. The concentration of total protein in pleural effusion increased from 1 to 3 days after drowning, however, there was no significant difference in the concentration of total protein in pleural effusion between each group at either 1 day or 3 days after drowning. These results suggest that analysis of electrolytes in pleural effusion may be useful for determining whether drowning has occurred in seawater or in freshwater.
在溺水尸体的法医解剖中，需要确定溺水地点。为了研究胸腔积液中电解质分析作为判断死者溺水地点指标的实用性，我们测定了在四种水中溺水的大鼠胸腔积液中的电解质浓度。溺水后1天和3天，海水溺水大鼠胸腔积液中钠离子和氯离子的浓度显著高于淡水溺水大鼠。溺水后1天，各实验组胸腔积液中钾离子浓度无差异，但海水溺水后1至3天钾离子浓度升高，而淡水溺水后1至3天钾离子浓度降低。溺水后1至3天胸腔积液中总蛋白浓度升高，但溺水后1天或3天各实验组胸腔积液中总蛋白浓度无显著差异。这些结果表明，胸腔积液中电解质分析可能有助于确定溺水发生在海水还是淡水中。
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