Acute and chronic diseases of the respiratory tract, accompanied by difficulty in withdrawing viscous sputum: tracheobronchitis, bronchitis of different etiology (including complicated by bronchiectasis), pneumonia, bronchial asthma, pulmonary tuberculosis, cystic fibrosis.
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.