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  • Title: Onset of effect of budesonide and formoterol administered via one pressurized metered-dose inhaler in patients with asthma previously treated with inhaled corticosteroids.
    Author: Kaiser H, Parasuraman B, Boggs R, Miller CJ, Leidy NK, O'Dowd L.
    Journal: Ann Allergy Asthma Immunol; 2008 Sep; 101(3):295-303. PubMed ID: 18814453.
    Abstract:
    BACKGROUND: Onset of bronchodilation of budesonide/formoterol in one pressurized metered-dose inhaler (pMDI) has not been evaluated in asthma. OBJECTIVE: To evaluate time to onset of clinically significant bronchodilation (> or = 15% improvement in forced expiratory volume in 1 second) and patient-perceived onset of effect (OE) in patients previously receiving inhaled corticosteroids. METHODS: In two 12-week studies, patients 12 years and older with moderate to severe (study 1; n = 596) and mild to moderate (study 2; n = 480) persistent asthma received budesonide/formoterol pMDI, budesonide pMDI plus formoterol dry powder inhaler (study 1 only), budesonide pMDI, formoterol dry powder inhaler, or placebo. Postdose time to 15% or greater improvement in forced expiratory volume in 1 second and patient-perceived OE (assessed in a subset of patients 18 years and older [study 1, n=553; study 2, n=405]) were evaluated [corrected] RESULTS: More budesonide/formoterol-treated patients achieved onset of clinically significant bronchodilation within 15 minutes (median, 13 minutes) of administration at randomization vs those taking budesonide or placebo (P < .001). More patients receiving budesonide/formoterol vs budesonide and placebo reported feeling their study medication begin to work right away (P < or = .004; end of week 1). Similar results (P < .001) were observed for patient satisfaction with how quickly they felt their medication begin to work (except budesonide/formoterol vs budesonide, study 1 [P = .073]). Time to onset of clinically significant bronchodilation and patient-perceived OE of budesonide/formoterol and formoterol were similar. CONCLUSION: Budesonide/formoterol demonstrated a more rapid onset of clinically significant bronchodilation and a greater percentage of patients who perceived their medication working right away vs budesonide or placebo.
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