Druck der Strangulationsschlinge

Hultkvist, Gustaf

doi:10.1007/bf01767969

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“…Auch sei erwfihnt, dab sehr dezidierte rechnerische und experimentelle Grundlagen darfiber existieren, welche Zugkrfifte bei den verschiedenen Formen des nicht freien Erh~ingens einwirken (Schwarzacher 1928) und wie sich die Gewebsdrucke aufden Halsquerschnitt verteilen (Hultkvist 1930).…”

Section: Bisheriges Schrifttumunclassified

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Halskompression und arterielle Obstruktion

1981

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Compression of the Neck and Arterial ObstructionSummary. Literature dealing with the obstruction of neck arteries induced by strangulation is referred to. Two types Of strangulation are applied to ten human corpses, i.e., hanging and strangulation by ligature. The neck arteries are isolated at their origins from the thoracic vessels. After removal of the brain the arterial openings at the skull base are observed of their flow through. Tap water is perfused through the vessels under four pressures, i.e., 100 , 200, 300, and 170 mm Hg. By using strangulation tools of three different diameters, various strangulation experiments are performed under controlled conditions imitating strangulation by ligature as well as atypical hanging. The most relevant results were:(1) In ~trangulation by ligature with the rope running horizontally round the neck it is possible to bring about obstruction to the carotid arterie~ by the same forces as in experimental hanging. Depending on the tool and on the arterial pressure, these forces vary between 2.5 and 10 kg. There are relations between the necessary forces, the diameter of the strangulaiion tools and the arterial pressures. Even by applying tractive forces in the range between 30-40 kg or by enhancing with a manual draw we did not succeed in bringing about an obstruction of the vertebral arteries. With the rope running obliquely round the neck as it does in typical hanging it is possible by minor tensile forces (between 8 and 17 kg) to obstruct these vessels as well.(2) In experimental hanging using a typical position of the tool, obstructions of all arteries occur between 5 and 15 kg. In types of hanging with an anterior suspension point above the level of the chin it was possible to occlude at least two vessels by application of intermediate forces.(3) In strangulation by ligature, the site of the appliance seems to have some influence. Infralaryngeal strangulation need somewhat greater tensile forces than a supralaryngeal course of the rope. Extreme bending of the neck does not impede the free passage of water, whereas with rotation and lateral flexion there could very well result obstructions of the arterial passage of the neck if physiological move of the head is reached or slightly overstepped.Some individual parameters of the corpses used (neck girth, rigor mortis, arteriosclerosis) did not have any influence on the powers obstructive to the carotid arteries.

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Section: Bisheriges Schrifttumunclassified

“…Schwarzacher (1928), im gleichen Bereich wie bei Brouardel (1897) und Scheil (1953. Wie bereits yon Scheil angemerkt und von Hultkvist (1930) …”

Section: Ergebnisse (1) Einflufl Der Strangdicke (Abb 1) Aus Den a unclassified