title: Comparative efficacy of different methods of nebulising terbutaline.
abstract: The efficacy of terbutaline inhaled from different aerosol systems was studied in 13 adult asthmatics. Terbutaline 1 mg was delivered from a pressurised aerosol, 1 and 4 mg were inhaled from a nebuliser, 1 mg was inhaled through a pressurised aerosol with a pear-shaped, 750 ml spacer, and 1 mg was inhaled from a nebuliser with Intermittent Positive Pressure Ventilation (I.P.P.V.). An open, randomized, cross-over design was used. The bronchodilator effect was evaluated by recording hourly flow-volume curves and the FEV1.0 for 5 h after treatment. No significant difference in bronchodilatation was observed after inhalation of 1 mg terbutaline from different aerosol systems, except following use of the nebuliser, which required approximately four times as much terbutaline to obtain the same effect as the ordinary spray.
mesh_terms: D000328:Adult; D000336:Aerosols; D001249:Asthma / Q000188:drug therapy*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007385:Intermittent Positive-Pressure Ventilation; D008297:Male; D008448:Maximal Expiratory Flow Rate; D008875:Middle Aged; D011897:Random Allocation; D013726:Terbutaline / Q000627:therapeutic use*
chemical_list: D000336:Aerosols; D013726:Terbutaline