title: Safety and efficacy of HFA-134a beclomethasone dipropionate extra-fine aerosol over six months.
abstract: OBJECTIVE
  To compare the systemic safety and efficacy of hydrofluoroalkane beclomethasone dipropionate (HFA-BDP) extra-fine aerosol 800 microg/day with chlorofluorocarbon (CFC)-BDP 1500 microg/day.
  
  
  METHODS
  Six-month, randomized, parallel-group, double-blind, double-dummy study.
  
  
  METHODS
  Patients (n=141) with moderate to severe asthma adequately controlled by CFC-BDP 1000 microg/day to 2000 microg/day.
  
  
  METHODS
  Patients received CFC-BDP 1500 microg/day during a two-week run-in period and were then randomized to either HFA-BDP (n=70) or CFC-BDP (n=71).
  
  
  RESULTS
  Similar proportions of HFA-BDP and CFC-BDP patients had a 24 h urinary free cortisol values below the reference range at month 6 (15% versus 25%, P=0.35). Measures of adrenocorticotrophic hormone stimulation and morning plasma cortisol levels were also similar in each group. The frequency of skin bruising and oral candidiasis was low for both treatments. No change in intraocular pressure was reported for either treatment. Pulmonary function was similar in both groups; however, the onset of the first asthma exacerbation or increased asthma symptoms tended to be earlier for CFC-BDP than for HFA-BDP (P=0.076); 27% of CFC-BDP patients reported increased asthma symptoms, compared with 14% of HFA-BDP patients (P=0.095).
  
  
  CONCLUSIONS
  HFA-BDP 800 microg/day has a systemic adverse event profile comparable to that of CFC-BDP 1500 microg/day, and further control of asthma symptoms may be achieved after a switch from CFC-BDP 1500 microg/day to HFA-BDP 800 microg/day.
authors.affiliation: Institut universitaire de cardiologie et de pneumologie, l'Université Laval, Hôpital Laval, Sainte-Foy, Quebec. lpboulet@med.ulaval.ca
authors.forename: Louis-Philippe
authors.initials: LP
authors.lastname: Boulet
authors.forename: André
authors.initials: A
authors.lastname: Cartier
authors.forename: Pierre
authors.initials: P
authors.lastname: Ernst
authors.forename: Pierre
authors.initials: P
authors.lastname: Larivée
authors.forename: Michel
authors.initials: M
authors.lastname: Laviolette
mesh_terms: D000280:Administration, Inhalation; D000293:Adolescent; D000328:Adult; D000335:Aerosol Propellants; D000368:Aged; D018927:Anti-Asthmatic Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D001249:Asthma / Q000097:blood / Q000188:drug therapy* / Q000652:urine; D001507:Beclomethasone / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D017402:Chlorofluorocarbons / Q000008:administration & dosage / Q000627:therapeutic use; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D006261:Headache / Q000209:etiology; D006801:Humans; D006845:Hydrocarbons, Fluorinated; D006854:Hydrocortisone / Q000097:blood / Q000652:urine; D008297:Male; D012141:Respiratory Tract Infections / Q000209:etiology; D016896:Treatment Outcome; D005466:Fluorocarbons
chemical_list: D000335:Aerosol Propellants; D018927:Anti-Asthmatic Agents; D001507:Beclomethasone; D017402:Chlorofluorocarbons; D006845:Hydrocarbons, Fluorinated; D006854:Hydrocortisone; C094049:apaflurane; D005466:Fluorocarbons