Clonidine pre-treatment prevents endotoxemia and OS in the gut, liver, and lungs of rats subjected to severe H/S. The improved intestinal barrier function probably stems from the antioxidant effect of clonidine on the intestinal epithelium, whereas the reduced endotoxemia may contribute to a decreased OS observed in the liver and lungs.
Reinfusion of large amounts of unprocessed blood (up to 40% of blood volume), collected with compresses from a noncontaminated surgical field is a cheap method, which may be of potential benefit in trauma patients, when more sophisticated autotransfusion devices are lacking. In the present study, this method resulted in transient but significant hemodynamic changes in the pulmonary circulation. Impairment of oxygen transport was noticed after the end of hemorrhage, but this impairment cannot be attributed to the autotransfusion technique alone, but also to factors such as hemorrhagic shock, surgical trauma, etc.
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