[Response to exertion of patients with obstructive bronchopneumopathies in the stage of chronic hypoxia and hypercapnia (functional study)]. / Le comportement a l'effort des patients atteints de bronchopneumopathie obstructive au stade d'hypoxie et d'hypercapnie chroniques (étude fonctionelle)

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. Acidosis is constant and mixed both metabolic and respiratory. The results are discussed after review of the literature.