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The effect of budesonide and formoterol in one pressurized metered-dose inhaler on patient-reported outcomes in adults with mild-to-moderate persistent asthma

ABSTRACT Objective: To determine the effects of budesonide and formoterol administered via one pressurized metered-dose inhaler (budesonide/formoterol pMDI) on patient-reported outcomes (PROs) and to determine the contributions of budesonide and formoterol to those effects in adults with asthma. Research design and methods: A 12-week, randomized, double-blind, double-dummy, placebo-controlled, multicenter study was conducted in 480 patients aged ≥ 12 years with mild-to-moderate persistent asthma. After a 2-week run-in period during which current asthma therapy was discontinued, patients were randomized to receive two inhalations twice daily of budesonide/formoterol pMDI 80/4.5 μg (160/9 μg), budesonide pMDI 80 μg (160 μg), formoterol via dry powder inhaler (DPI) 4.5 μg (9 μg), or placebo. Main outcome measures: Analyses included a subpopulation of 405 patients aged ≥ 18 years. PROs included the standardized Asthma Quality of Life Questionnaire (AQLQ(S)), the Medical Outcomes Study (MOS) Sleep Scale, the Patient Satisfaction with Asthma Medication (PSAM) questionnaire, and asthma control variables (recorded via electronic diaries), such as asthma symptoms, rescue medication use, and nighttime awakenings due to asthma. Patient and physician global assessments were collected at the end of the study. Results: Patients aged ≥ 18 years receiving budesonide/formoterol pMDI reported significantly greater improvements from baseline in AQLQ overall and domain scores, MOS Sleep Scale domain scores, and asthma control variables than patients receiving placebo ( p ≤ 0.033). Improvements from baseline in AQLQ(S) overall and domain scores, daily asthma symptoms scores, percentage of symptom-free days, percentage of rescue medication-free days, and percentage of asthma control days were significantly greater in patients receiving budesonide/formoterol pMDI versus formoterol DPI ( p ≤ 0.042). Patients receiving budesonide/formoterol pMDI reported significantly greater PSAM scores than did patients in all other treatment arms ( p ≤ 0.004). Study limitations may include the fact that the formoterol-alone arm used a different device and formulation than the other active arms as well as the absence of a treatment arm with budesonide and formoterol administered concomitantly in separate inhalers. In addition, these results may not be generalized to all patients with asthma, as this analysis included only patients aged ≥ 18 years. Conclusions: Patients receiving treatment with budesonide/formoterol pMDI experienced significantly greater improvements from baseline in asthma-related quality of life, quality of sleep, and asthma control and greater satisfaction with treatment than patients receiving placebo. The combination of budesonide and formoterol in one pMDI is beneficial in improving how a patient feels and functions as a result of treatment.