Abstract:Recently demand oxygen delivery (DOD) system has been preferred to continuous flow oxygen (CFO) method for long term oxygen therapy in patients with chronic obstructive pulmonary disease, since DOD system supplies oxygen during only inhalation and saves oxygen consumption. However, the oxygen saving ratio have not properly compared without considering fraction of inspired oxygen (FIO 2 ), though FIO 2 determines the efficacy of treatment. The purpose of this study was 1) to investigate the equivalence between … Show more
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