The effect of low frequency breathing compared with spontaneous breathing was examined at rest and during exercise (40 watts) in 12 patients suffering from severe chronic obstructive bronchitis. At rest low frequency breathing improved significantly the alveolar ventilation and the tensions of oxygen and carbon dioxide in the arterial blood. There was no significant change in ventilation minute volume.
View Article and Find Full Text PDFTwenty 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.
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