title: Double blind comparison of acute bronchial and ventilation-perfusion changes to atrovent and isoproterenol.
mesh_terms: D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000097:blood / Q000503:physiopathology; D001286:Atropine Derivatives / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D009241:Ipratropium / Q000494:pharmacology*; D007545:Isoproterenol / Q000494:pharmacology*; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D014797:Vital Capacity / Q000187:drug effects*
chemical_list: D001286:Atropine Derivatives; D009241:Ipratropium; D007545:Isoproterenol; D010100:Oxygen