Acute and chronic bronchopulmonary diseases accompanied by the formation of sputum of increased viscosity (bronchial asthma, pneumonia, tracheobronchitis, obstructive bronchitis, bronchiectasis, emphysema, cystic fibrosis, tuberculosis, pneumoconiosis).
Sanitation of the bronchial tree in the preoperative period and during the medical and diagnostic intrabronchial manipulation, prevention of congestion in the bronchi of thick viscous sputum after the operation.