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Tytuł pozycji:

Decomposition variability between the scene and autopsy examination and implications for post-mortem interval estimations.

Tytuł :
Decomposition variability between the scene and autopsy examination and implications for post-mortem interval estimations.
Autorzy :
Giles SB; Cranfield Forensic Institute, Cranfield University, Shrivenham, Swindon, SN6 8LA, United Kingdom. Electronic address: .
Errickson D; Cranfield Forensic Institute, Cranfield University, Shrivenham, Swindon, SN6 8LA, United Kingdom.
Márquez-Grant N; Cranfield Forensic Institute, Cranfield University, Shrivenham, Swindon, SN6 8LA, United Kingdom.
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Źródło :
Journal of forensic and legal medicine [J Forensic Leg Med] 2022 Jan; Vol. 85, pp. 102292. Date of Electronic Publication: 2021 Nov 24.
Typ publikacji :
Journal Article
Język :
English
Imprint Name(s) :
Original Publication: Kidlington, Oxford : Elsevier
MeSH Terms :
Forensic Medicine*
Postmortem Changes*
Autopsy ; Biomarkers ; Forensic Pathology ; Humans ; Morgue
Contributed Indexing :
Keywords: Accumulated degree days; Autopsy; Decomposition; Forensic pathology; Photographs; Post-mortem interval
Substance Nomenclature :
0 (Biomarkers)
Entry Date(s) :
Date Created: 20211128 Date Completed: 20220111 Latest Revision: 20220111
Update Code :
20220301
DOI :
10.1016/j.jflm.2021.102292
PMID :
34839087
Czasopismo naukowe
Forensic experts rely on scene and/or autopsy photographs to estimate the post-mortem interval (PMI) when an in-situ assessment of decomposition is unfeasible. The degree of decomposition may vary between the scene and autopsy, which importantly could affect estimations of the unknown PMI in forensic casework. This study aimed to investigate decomposition variability between the scene and autopsy and assess the subsequent effect on the accuracy of PMI estimations. Scene and autopsy photographs from 94 cases with known PMI were used from the Allegheny County Office of the Medical Examiner in Pittsburgh, United States. The total decomposition scoring (TDS) method measured the overall decomposition level, and 28 markers of decomposition were recorded as a percentage of the total body surface area (TBSA). In 60% of cases the TDS had increased at autopsy causing significant overestimations of the autopsy PMI and 86% of decomposition markers varied between the scene and autopsy. Decomposition progressed during mortuary time lags (MTL) of 3-44 h, where bodies were stored in a pre-autopsy refrigerator at 4 °C, suggesting that refrigeration may not always delay decomposition. This research also assisted in validating photographs as a proxy for real-time decomposition assessments. While the autopsy photographs conferred higher quality than the scene photographs, the scene photographs produced more accurate PMI estimations. Forensic experts should exhibit caution when estimating the PMI from autopsy photographs alone, as they may not accurately reflect scene decomposition. To prevent misinterpretation of the PMI estimation, both scene and autopsy photographs should always be requested.
(Copyright © 2021 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.)

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