International Journal of Legal Medicine

, Volume 127, Issue 2, pp 437–445

Differentiation at autopsy between in vivo gas embolism and putrefaction using gas composition analysis

Authors

  • Yara Bernaldo de Quirós
    • Veterinary Histology and Pathology, Department of Morphology, Institute of Animal Health, Veterinary SchoolUniversity of Las Palmas de Gran Canaria (ULPGC)
    • Biology DepartmentWoods Hole Oceanographic Institution
  • Oscar González-Díaz
    • Physical and Chemical Instrumental Center for the Development of Applied Research Technology and Scientific estate (CIDIA), Edificio Polivalente 1University of Las Palmas de Gran Canaria (ULPGC)
  • Andreas Møllerløkken
    • Department of Circulation and Medical ImagingNorwegian University of Science and Technology
  • Alf O. Brubakk
    • Department of Circulation and Medical ImagingNorwegian University of Science and Technology
  • Astrid Hjelde
    • Department of Circulation and Medical ImagingNorwegian University of Science and Technology
  • Pedro Saavedra
    • Department of MathematicsUniversity of Las Palmas de Gran Canaria (ULPGC)
    • Veterinary Histology and Pathology, Department of Morphology, Institute of Animal Health, Veterinary SchoolUniversity of Las Palmas de Gran Canaria (ULPGC)
Original Article

DOI: 10.1007/s00414-012-0783-6

Cite this article as:
Bernaldo de Quirós, Y., González-Díaz, O., Møllerløkken, A. et al. Int J Legal Med (2013) 127: 437. doi:10.1007/s00414-012-0783-6

Abstract

Gas embolism can arise from different causes (iatrogenic accidents, criminal interventions, or diving related accidents). Gas analyses have been shown to be a valid technique to differentiate between putrefaction gases and gas embolism. In this study, we performed systematic necropsies at different postmortem times in three experimental New Zealand White Rabbits models: control or putrefaction, infused air embolism, and compression/decompression. The purpose of this study was to look for qualitative and quantitative differences among groups and to observe how putrefaction gases mask in vivo gas embolism. We found that the infused air embolism and compression/decompression models had a similar gas composition prior to 27-h postmortem, being typically composed of around 70–80 % of N2 and 20–30 % of CO2, although unexpected higher CO2 concentrations were found in some decompressed animals, putting in question the role of CO2 in decompression. All these samples were statistically and significantly different from more decomposed samples. Gas composition of samples from more decomposed animals and from the putrefaction model presented hydrogen, which was therefore considered as a putrefaction marker.

Keywords

PutrefactionGas embolismDecompressionGas compositionNitrogen

Supplementary material

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012