Controlled trial of the effect of repeated administration of ipratropium bromide on ventilatory function of patients with severe chronic airways obstruction.
A trial was designed to assess whether repeated administration of ipratropium bromide for two weeks produced greater improvement than was obtained after a single dose. The effect of ipratropium bromide was compared with that of a placebo during a double-blind cross-over randomized trial in patients with advanced chronic airways disease in a stable state. Ipratropium bromide and placebo were both administered by metered dose inhaler for 14 days. There was a slight statistically significant improvement of conductance, thoracic gas volume, FEV1 and VC after inhalation of ipratropium bromide, but repeated doses of the drug did not produce progressive improvement.
D000402:Airway Obstruction / Q000188:drug therapy* / Q000503:physiopathology; D001286:Atropine Derivatives / Q000008:administration & dosage*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D012129:Respiratory Function Tests
D001286:Atropine Derivatives; D009241:Ipratropium