肺結核後遺症を中心とした慢性呼吸不全患者におけるデマンド型酸素供給装置の有用性の検討

概要

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To evaluate the usefulness of a new oxymatic conserver, Demand Oxygen Delivery System (DODS), we compared DODS breathing with Standard steady flow (SF) breathingin thirteen subjects with chronic respiratory failure due to mainly tuberculosis sequelae. The value of the DODS (Oxymatic) is that it delivers oxygen only during early inspiration, so as to minimize loss from delivery during expiratory phase. Improvement of SaO<SUB>2</SUB>, measured by BIOX3740, and PaO<SUB>2</SUB>were observed at rest and on exercise. The oxygenconsumption ratio of the DODS to the SF method was between 0.5 and 0.3, favoring the DODS over the SF method. In some patients DODS hardly ran at rest. But no problemsare observed during exercise. The results indicate the effectiveness of DODS in advancement of quality of life patients with chronic respiratory failure.