metaproterenol 0.65 mg produced just as much increase of 1-sec forced expiratory volume ( fev1 ) as did the much larger dose ( 1.95 mg ) , but each subsequent inhalation of the drug produced further , significant increase of fev1 suggesting better penetration of the bronchidilator aerosol after some bronchodilation had been achieved .
C0029193
0
C1371299
bronchodilation