[Significance of lung function study in clinical monitoring of patients with mucoviscidosis].

Lung function tests as tools in the lifelong care of patients with cystic fibrosis can help to assess results of different therapeutic regimes and the prognosis, as there is a typical sequence of alterations of lung function parameters. They allow to assess the degree of disablement more precisely and more adequately than do clinical data; this is of special concern in questions related to social rehabilitation and the finding of an adequate job. Appropriate parameters are forced vital capacity, maximal mid-exspiratory flow, residual volume and partial pressure of oxygen and carbon dioxide in arterial blood.