[Response to exertion of patients with obstructive bronchopneumopathies in the stage of chronic hypoxia and hypercapnia (functional study)].

Twenty patients suffering from chronic obstructive bronchopulmonary disease were tested during exercise. If exhaustive load is always reduced; it is difficult to predict from the functional results obtained at rest. The commun characteristic found in those patients is the insufficient adaptation during exercise of the VA/V ratio, with deterioration of Pao2 and Paco2.