A 52 y.o. patient complains of dyspnea caused even by moderate physical activity, cough with hardly secreted sputum. He has been ill for 12 years. Objectively: BR- 26/min. Lung examination: tympanitis, diminished vesicular breathing with prolonged expiration, disseminated dry rales. In the past he was taking only theopecym or ami-nophylline inravenously. Prescribe him the basic treatment after the exacerbation is suppressed: