[Differentiation of dyspnea in patients with asthma and lung sarcoidosis].

Dyspnea as a subjective feeling of lack of air is the patients with the pathology of the respiratory system. Objectivization of this phenomenon is difficult, despite the introduction of questionnaires about the degree of dyspnoea. The results of these assessments do not always correlate with the results of spirometric tests. In patients with asthma, dyspnoea is caused by airway obstruction. In the case of patients with lung sarcoidosis, the complexity of the phenomenon causes that many mechanisms and factors are responsible for the dyspnea symptoms in these patients. Dyspnea in patients with sarcoidosis is progressive and is closely related to the extent of interstitial exchanges. The diffusion capacity for carbon monoxide (DLco) determined in these patients reflects the degree of respiratory distress. Therapeutic procedures are also dependent on this parameter.