Oxygen Therapy in Respiratory Failure

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Abstract
THE goal of oxygen therapy in respiratory failure should be the correction of hypoxia to a safe level without significant enhancement of respiratory acidosis. Conventional methods of administering oxygen have been modified in attempts to achieve this goal. Recommended technics have included the administration of oxygen at low rates of flow,1 , 2 intermittent periods of inhalation,3 intermittent hyperventilation4 and the use of special devices for administration of oxygen in predictable concentrations. 1 , 5 6 7 About thirty years ago, Barach1 introduced the concept of "controlled oxygen therapy" by the use of low rates of gas flow and also developed a mask, based on the principle . . .