Heart, brain, kidneys, liver, small intestine, and skeletal muscle experience tissue hypoxia at different degrees of acute anemia, as assessed by the pimonidazole method and vascular endothelial growth factor expression. Further studies are needed to elucidate the mechanisms that determine organ-specific anemia tolerance.
During cell-free volume replacement, hyperoxic ventilation with Fio2 0.6 generates a readily usable plasmatic oxygen reserve and thereby increases the tolerance toward acute normovolemic anemia.
In this present experimental study the infusion of a PEG-modified LEH provided adequate tissue oxygenation, hemodynamic stability, and a prolongation of survival time after critical anemia. However, these effects were sustained for only a short period of time.
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