Comparative clinical trial of three kinds of salbutamol aerosols

Pulmonary function test was performed in 20 asthmatic subjects, befor and after inhalation of three kinds of salbutamol aerosols. The result showed that the time needed to reach maximal bronchodilation effect was same for three kinds of aerosols and the effect of England and Irelandmade salbutamol aerosols was litle better than that made in china but there was no significant diffrence among three kinds of aerosols. In another two subjects the time course of bronchodilation effect was observed up to 6hours and all three aerosols showed thief bronchodilation effect walch may continue to 6 hours after inhalation.