Chest
clinical investigationsDemand Oxygen Delivery during Exercise
Section snippets
Demand Oxygen Delivery System
The DODS (Oxymatic, Chad Therapeutics, Inc, Chatsworth, CA) is a small, durable, 10 oz device, powered by a standard C-cell battery. It incorporates an electronically controlled solenoid valve and is interposed between the patient and the liquid or gas oxygen source (Fig 1). The DODS senses the beginning of inhalation through the nasal cannula and thereupon directs the solenoid valve to open momentarily to deliver a 32 ±2 ml bolus of oxygen. This delivery pulse is complete within 200 msec after
ACKNOWLEDGMENT
We wish to acknowledge and thank Charles Adams; Oswaldo Re, M.D.; Jim Williams; and Gerri Dingier for their help and support in performance of the study and preparation of the manuscript.
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Cited by (32)
Oxygen-conserving devices: A forgotten resource
2007, Archivos de BronconeumologiaComparison of two demand oxygen delivery devices for administration of oxygen in COPD
2005, ChestCitation Excerpt :This is also in conformity with the results of other publications,710 in which oxygen equilibrium was established only after 30 min. In other studies, measurements were carried out after only 10 min11 or 15 min.12 In this study, we have been able to show that oxygen-conserving devices can provide hypoxemic patients with an adequate supply of oxygen at rest.
This research study was supported in part by Chad Therapeutics, Inc., Chatsworth, California, the Danziger Family Fellowship, and the Ray and Alpha Morrow Research Fund.
Manuscript received April 24; revision accepted July 7.