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Mechanics of breathing in patients with aortic valve disease

par Yernault, Jean Claude ;De Troyer, André
Référence Clinical Respiratory Physiology, 16, 4, page (491-499)
Publication Publié, 1980

Article révisé par les pairs

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Résumé :

Lung elastic properties and volumes, CO-transfer factor, airway resistance and forced expiratory flows were measured in 53 heart patients with pure aortic valve disease and correlated to hemodynamic data. The type of valve disease had no influence on the results. Characteristic findings were a restrictive type of ventilatory defect with no obstructive component, more marked when the pulmonary wedge pressure at rest was increased. Despite the decreased lung volumes, the static expiratory compliance remained normal, but dynamic compliance was low. The reduction in forced expiratory flows was explained by changes in volumes and lung elastic pressures. The observed changes are most probably the consequence of interstitial lung edema.