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    J Forensic Sci. 2009 Jan;54(1):192-4. Epub 2008 Nov 1.

    Agonal sequences in four filmed hangings: analysis of respiratory and movement responses to asphyxia by hanging.

    Sauvageau A.

    Source

    Laboratoire de sciences judiciaires et de médecine légale, Edifice Wilfrid-Derome, 1701 rue Parthenais, 12 étage, Montréal, Quebec, Canada H2K 3S7.

    Abstract

    The human pathophysiology of asphyxia by hanging is still poorly understood, despite great advances in forensic science. In that context, filmed hangings may hold the key to answer questions regarding the sequence of events leading to death in human asphyxia. Four filmed hangings were analyzed. Rapid loss of consciousness was observed between 13 sec and 18 sec after onset of hanging, closely followed by convulsions (at 14-19 sec). A complex pattern of decerebration rigidity (19-21 sec in most cases), followed by a quick phase of decortication rigidity (1 min 00 sec-1 min 08 sec in most cases), an extended phase of decortication rigidity (1 min 04 sec-1 min 32 sec) and loss of muscle tone (1 min 38 sec-2 min 47 sec) was revealed. Very deep respiratory attempts started between 20 and 22 sec, the last respiratory attempt being detected between 2 min 00 sec and 2 min 04 sec. Despite differences in the types of hanging, this unique study reveals similarities that are further discussed.

    PMID:
    19040672
    [PubMed - indexed for MEDLINE]

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