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長時間作用性β2刺激薬(LABA)未使用で,吸入ステロイド薬(ICS)未使用または800μg/日以下で治療中の軽症持続型および中等症持続型の成人気管支喘息患者に対して,ICS/LABA配合剤であるブデソニド/ホルモテロール配合剤(BUD/FOR,640/18μg/日)による12週の治療を行い,呼吸機能,症状,気道炎症の改善,および安全性について検討した。90例を対象に有効性の解析を行った結果,喘息コントロール,呼吸機能,呼気一酸化窒素に,投与後4週からの有意な改善が認められた。また,日記を用いてピークフロー(PEF),症状,発作治療薬の使用回数の変化を評価したところ,これらの指標の速やかな改善が明らかになった。安全性に大きな問題は認められなかった。これらより,BUD/FOR(640/18μg/日)は,ICS未使用もしくは使用中いずれの患者に対しても,速やかに喘息コントロール,呼吸機能,気道炎症の改善を示す有効な治療薬であると考えられた。
To evaluate the efficacy and safety of budesonide/formoterol(BUD/FOR)combination in mild-to-moderate asthma patients in actual clinical settings, we conducted a multicenter trial. Patients treated with ≦800μg/day of BUD or an equivalent without long-acting β2-agonists(LABA)and classified as“partly controlled”or“uncontrolled”according to Global Initiative for Asthma(GINA)criteria were treated using BUD/FOR(640/18μg/day)for 12 weeks. During this period, forced expiratory volume in one second(FEV1), exhaled nitric oxide(FeNO), a daily record of daytime and nighttime symptoms, limitations of activities, morning and evening peak expiratory flow(PEF), and use of bronchodilators were observed. A total of 110 subjects were analyzed for safety, and 90 subjects were analyzed for efficacy. All assessment items(asthma control level, lung functions, FeNO)were significantly improved after 4 weeks of treatment, and improvements gradually continued after 12 weeks. After 12 weeks of treatment, 32.5% of patients had achieved a“controlled”classification according to GINA criteria. Diary items(symptoms, PEF, and reliever use)improved rapidly within 1-2 weeks after starting treatment. All adverse events were non-serious and no safety issues were seen with this treatment. In conclusion, BUD/FOR is a clinically effective and safe treatment for rapid improvement of asthma control, lung function, and airway inflammation in adult patients with mild-to-moderate asthma.