Higashimoto Y, Machida K, Haga T
Division of Respiratory Diseases, Tokyo National Chest Hospital, Japan.
Kekkaku. 1990 Nov;65(11):693-9.
To evaluate the usefulness of a new oxymatic conserver, Demand Oxygen Delivery System (DODS), we compared DODS breathing with Standard steady flow (SF) breathing in 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 SaO2, measured by BIOX 3740, and PaO2 were observed at rest and on exercise. The oxygen consumption 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 problems are observed during exercise. The results indicate the effectiveness of DODS in advancement of quality of life patients with chronic respiratory failure.
为评估新型氧自动保存器——按需输氧系统（DODS）的效用，我们将13名主要因肺结核后遗症导致慢性呼吸衰竭的受试者的DODS呼吸与标准稳流（SF）呼吸进行了比较。DODS（氧自动保存器）的价值在于它仅在吸气早期输送氧气，从而将呼气阶段输送过程中的氧气损失降至最低。通过BIOX 3740测量的动脉血氧饱和度（SaO2）和动脉血氧分压（PaO2）在静息和运动时均有改善。DODS与SF方法的耗氧比在0.5至0.3之间，表明DODS优于SF方法。在一些患者中，DODS在静息时几乎不运行。但运动期间未观察到问题。结果表明DODS对改善慢性呼吸衰竭患者的生活质量有效。
