Oxygen Cost and Efficiency of Respiratory System in Hypoxia and in Congestive Heart Failure

It was, therefore, of interest to determine whether the oxygen consumption and efficiency of the respiratory system weretaltered in other conditions in which hypoxia was present. This paper reports measurements of the oxygen cost of an increased ventilation and the efficiency with which added inspiratory work loads were handled in (1) normal subjects breathing hypoxic gas mixtures and (2) patients with congestive heart failure.

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