Ejection fraction of 30-40% is an indication for hyperbaric oxygenation therapy. The decision about the treatment is made by the physician based on his experience, general condition of the patient, frequency and severity of hypoxic episodes. If EF% is 30% or below, HBO is not recommended, because antioxidative defense mechanisms are exhausted under hyypoxia and the balance of the organism should not be changed. An increase in average EF% by 11% demonstrates that combined use of HBO and Erythropoietin gives good results.
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