[Analysis of pulmonary mechanics in patients with silicosis (author's transl)].
Parameters of pulmonary mechanics were measured at rest and during physical effort in patients with silicosis and normal subjects. Between normal subjects and patients with silicosis of stage I a significant difference could not be found. However, a decrease of dynamic compliance and an increase of elastic work of breathing were found in patients with silicosis III during exercise. The PT/VT-quotient is already high at rest. These results are not in agreement with the subjective symptom "dyspnea". The feeling of dyspnea appears when the PT/VT-quotient is enhanced signifcantly during exercise in comparison with the value at rest. Therefore, only the PT/VT-quotient is a suitable parameter indicating dyspnea.
D004417:Dyspnea / Q000503:physiopathology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008170:Lung Compliance; D005082:Physical Exertion; D012119:Respiration; D012829:Silicosis / Q000503:physiopathology*
Atemmechanische Untersuchungen bei Silikose