[Treatment of preoperative anemia in major orthopedic surgery].

The prevalence of preoperative anemia in major orthopedic surgery is high and is the main predictive factor for allogeneic blood transfusion. The scheduling of a preoperative visit with sufficient notice (at least 3 weeks before surgery), with a blood count test and a basic iron metabolism study, enables us to treat the anemia and/or improve preoperative hemoglobin levels, thereby reducing the need for transfusion and the risks associated with transfusions. Intravenous iron and/or erythropoietin are treatments for optimizing preoperative anemia, with good levels of scientific evidence.