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Pathogenic mechanism of spontaneous vascular occlusion following traumatic arterial rupture

Pathogenic mechanism of spontaneous vascular occlusion following traumatic arterial rupture

Chirurg 61(11): 797-802

In ruptures of arteries the spontaneous haemostasis was supposed to be induced by 'rolling' of the intima until now. Experiments with isolated arterial segments (human femoral artery) and in vivo with ovine femoral arteries could not show this mechanism as the reason for the spontaneous haemostasis. The structure of the adventitia and its typical behavior during rupture procedure explains better the 'sandglass formation' in arterial ruptures with fractures and dislocations. This is induced by a 'fingertrap'-mechanism ofthe adventitia. The adventitia is sealed by platlets, which show a direct interaction with the collagen fibrs of the adventitia. The platelet thrombus is stabilized by fibrin.

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