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Effect of budesonide/formoterol pMDI on COPD exacerbations: a double-blind, randomized study
Amir Sharafkhaneh1, John G Southard, Mitchell Goldman
1Section of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine and Michael E. DeBakey VA Medical Center Bldg. 100 (111i), Houston, TX 77030, USA. amirs@bcm.edu
Background:
Treatment with an inhaled corticosteroid (ICS) and long-acting bronchodilator is recommended for severe/very severe chronic obstructive pulmonary disease (COPD) patients with repeated exacerbations. This randomized, double-blind, double-dummy, parallel-group, 12-month multicenter study evaluated the effect of budesonide/formoterol pressurized metered-dose inhaler (pMDI) on COPD exacerbations.
Methods:
Following a 2-week run-in during which COPD patients aged ≥40 years with an exacerbation history discontinued medications except ICSs, 1219 patients were randomized 1:1:1 to twice-daily budesonide/formoterol pMDI 320/9 μg, budesonide/formoterol pMDI 160/9 μg, or formoterol dry powder inhaler 9 μg. An exacerbation was defined as COPD worsening requiring oral corticosteroids and/or hospitalization. A post hoc analysis, with antibiotic treatment added to the exacerbation definition, was also performed.
Results:
Budesonide/formoterol 320/9 and 160/9 reduced exacerbation rates (number per patient-treatment year) by 34.6% and 25.9%, respectively, versus formoterol (p ≤ 0.002). Budesonide/formoterol 320/9 prolonged time to first exacerbation versus formoterol, corresponding to a 21.2% reduction in hazard ratio (0.788 [95% CI: 0.639, 0.972]; p = 0.026). Exacerbation rates (number per patient-treatment year) including antibiotic treatment (post hoc analysis) were reduced by 25.9% and 18.7% with budesonide/formoterol 320/9 and 160/9, respectively, versus formoterol (p ≤ 0.023). Both budesonide/formoterol doses were well tolerated with safety profiles similar to formoterol. Pneumonia adverse events occurred in 6.4%, 4.7%, and 2.7% of patients in the budesonide/formoterol 320/9, 160/9, and formoterol groups.
Conclusions:
Over 12 months, both budesonide/formoterol doses reduced the exacerbation rate (defined with or without antibiotic treatment) versus formoterol. Budesonide/formoterol pMDI is an appropriate treatment for reducing exacerbations in COPD patients with a history of exacerbations. (NCT00419744).
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