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Titolo:
Spectrophotometric evaluation of postmortem lividity
Autore:
Bohnert, M; Weinmann, W; Pollak, S;
Indirizzi:
Univ Freiburg, Inst Forens Med, D-79104 Freiburg, Germany Univ Freiburg Freiburg Germany D-79104 ns Med, D-79104 Freiburg, Germany
Titolo Testata:
FORENSIC SCIENCE INTERNATIONAL
fascicolo: 2, volume: 99, anno: 1999,
pagine: 149 - 158
SICI:
0379-0738(19990111)99:2<149:SEOPL>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONOXIDE-RELATED DEATHS; CARBON-MONOXIDE; PHOTOMETRIC MEASUREMENT; LIVOR-MORTIS; SYSTEM; TIME; COLORIMETER; HYPOSTASIS; PRESSURE; COLOR;
Keywords:
livores; colorimetry; carbon monoxide poisoning;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Bohnert, M Univ Freiburg, Inst Forens Med, Albertstr 9, D-79104 Freiburg, Germany Univ Freiburg Albertstr 9 Freiburg Germany D-79104 rg, Germany
Citazione:
M. Bohnert et al., "Spectrophotometric evaluation of postmortem lividity", FOREN SCI I, 99(2), 1999, pp. 149-158

Abstract

Under low ambient temperatures normally bluish postmortem lividity adopts a bright red or pink colour due to resaturation of haemoglobin with O-2. The most important differential diagnosis in the presence of pink hypostasis is carbon monoxide poisoning. To answer the question if objective measuringmethods allow differentiation of hypostasis with regard to cold expositionor carbon monoxide poisoning, spectrophotometric measurements were performed and the colorimetric measures as well as the spectral reflectance curvesof the postmortem lividity were determined. The colorimetric measures CIE-L*a*b* showed similar values for all bright red livores mortis; differentiation between CO intoxication and cold exposition was not possible. Reflectance curves of pink hypostasis after cold storage showed the typical patternof O-2-rich blood with reflectance minima at wavelengths 541 nm and 576 nmand a reflectance maximum at 560 nm. Pink hypostasis because of carbon monoxide poisoning showed a shift of the reflectance maximum toward 555 nm anda flattened curve in all cases with COHb concentrations exceeding 52%, whereas these changes were not regularly observed with lower COHb levels. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 19:09:33