In clinical practice, anemia is a clinical situation, which, according to present evidences, is met in 70% of hospitalized patients. The most efficient treatment for anemia is hemotransfusion and, the reason why we transfuse, is to preserve the tissue oxygenation the moment the compensatory mechanisms fail But although there are 200 years since the first hemotransfusions were carried out, despite of the technological advancements, field experts still have not found a strict international consensus... Mehr