[Obstruction parameters and pulmonary artery pressure in asthmatics after administration of aminophylline].

In 30 asthmatics after the application of aminophylline the measurement of the pressure of the pulmonary arteries as well as of the parameters of the respiratory function FEV1.0 and Rt was performed. It is proved a significant decrease of pressure in the lesser circulatory system. The reduction of the bronchial obstruction cannot be proved by means of the respiratory impulse test (FEV1.0), but by the determination of the resistance to respiration (Rt).