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Journal Article

Citation

Eckes L, Tsokos M, Herre S, Gapert R, Hartwig S. Forensic Sci. Med. Pathol. 2013; 9(2): 145-153.

Affiliation

Institute of Legal Medicine and Forensic Sciences, Charité-University Medicine Berlin, Berlin, Germany.

Copyright

(Copyright © 2013, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/s12024-012-9383-5

PMID

23065653

Abstract

Diphenhydramine (DPH), an H1-antihistamine, is identified during postmortem toxicological analyses on a relatively rare but still regular basis. This study examines suicidal intoxications with DPH by analyzing blood and gastric content concentration levels. Twenty cases of DPH intoxications within a 10-year period (2000-2010) were discovered by screening the autopsy records of the Institute of Legal Medicine and Forensic Sciences (ILMFS) in Berlin, Germany. In four cases, DPH levels were lower than 1 μg/mL and hence were not considered likely to be responsible for causing death. In 11 cases, DPH played a role in the fatal episode, and five of these cases were monointoxications. Considering that more than 8,000 autopsies were performed by the ILMFS within the time period under examination, there is only one monointoxication case every 2 years, which makes it a rare occurrence. In two of these intoxications, DPH was only measured in toxic but not "lethal" concentrations in blood, with a concentration of 5 μg/mL being generally used as the cut off between categories according to forensic literature. This raises the question as to whether a strict boundary for a "lethal" blood concentration, as suggested in some literature, can be set and applied in any of these cases. This study shows that an individual interpretation of each case is of utmost importance for correct classification. A thorough toxicological analysis of peripheral venous blood and gastric content, as well as a detailed work-up of the death circumstances, are the basis of an exact interpretation of intoxications with DPH.


Language: en

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