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[Ultrastructural changes in the endothelial cells of the mesenterial terminal blood stream track during the first two hours of a traumatic hemorrhagic shock (THS)].

Ultrastructural changes of endothelial cells of the mesenteric microcirculatory bed were morphometrically and statistically examined on a total of 32 male R-rats 15, 30, 60, and 120 min after a traumatic-haemorrhagic shock (THS). Significant changes of various parameters were observed at all times after shock compared with a control group (8 animals). The findings can be divided into 2 main forms of reaction, namely activation and injury. At all times overlapping occurred and endothelial cells were considerably heteromorphic. Severe, possible irreversible injuries were rare.