Effect of High Dose Inhaled Glucocorticoids on Quality of Life in Patients with Moderate to Severe Asthma

Asthma is a chronic disorder that can place considerable restrictions on the physical, emotional, and social aspects of the lives of patients. Inhaled glucocorticoids (GCs) are the most effective controller therapy. The purpose of this study was to evaluate the effect of inhaled GCs on quality of life in patients with moderate to severe asthma. Patients completed the asthma quality of life questionnaire (AQLQ) and pulmonary function test at baseline and after 4 wks treatment of GCs. We enrolled 60 patients who had reversibility in FEV(1) after 200 µg of albuterol of 15% or more and/or positive methacholine provocation test, and initial FEV(1)% predicted less than 80%. All patients received inhaled GCs (fluticasone propionate 1,000 µg/day) for 4 wks. The score of AQLQ was significantly improved following inhaled GCs (overall 51.9±14.3 vs. 67.5±12.1, p<0.05). The change from day 1 to day 28 in FEV(1) following inhaled GCs was diversely ranged from -21.0% to 126.8%. The improvement of score of AQLQ was not different between at baseline and after treatment of GCs according to asthma severity and GCs responsiveness. Quality of life was improved after inhaled GCs regardless of asthma severity and GCs responsiveness in patients with moderate to severe asthma.