title: Duration of bronchoprotection of inhaled ipratropium against inhaled methacholine.
authors.forename: Chamani
authors.initials: C
authors.lastname: Illamperuma
authors.forename: Beth E
authors.initials: BE
authors.lastname: Davis
authors.forename: Mark E
authors.initials: ME
authors.lastname: Fenton
authors.forename: Donald W
authors.initials: DW
authors.lastname: Cockcroft
mesh_terms: D000328:Adult; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology; D001985:Bronchial Provocation Tests; D016085:Bronchoconstrictor Agents / Q000494:pharmacology; D001993:Bronchodilator Agents / Q000494:pharmacology / Q000627:therapeutic use; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004347:Drug Interactions; D005260:Female; D005541:Forced Expiratory Volume / Q000187:drug effects; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D008297:Male; D016210:Methacholine Chloride / Q000008:administration & dosage / Q000494:pharmacology*; D018721:Muscarinic Agonists / Q000494:pharmacology; D018727:Muscarinic Antagonists / Q000494:pharmacology / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D016085:Bronchoconstrictor Agents; D001993:Bronchodilator Agents; D018721:Muscarinic Agonists; D018727:Muscarinic Antagonists; D016210:Methacholine Chloride; D009241:Ipratropium