布地奈德/福莫特罗联合吸入固定剂量治疗由中等剂量递减至低剂量后,哮喘控制仍能维持
2012/12/24
摘要
背景:对于采用布地奈德/福莫特罗联合吸入治疗的患者,许多患者开始时采用每日固定剂量(640/18 μg;4揿)治疗,但尚未有指南规定当获得哮喘控制后的减量治疗方案。
方法:采用布地奈德400 μg和沙美特罗100 μg治疗(GINA第3步)或沙美特罗/氟替卡松治疗(250 μg;2揿)(GINA第4步)的中度哮喘患者入选本研究,开始时采用布地奈德/福莫特罗(4揿)治疗。随后,如果8周内满足如下标准,剂量则递减至2揿:呼出气一氧化氮分数(FeNO)≤28 ppb和哮喘控制测试(ACT)评分≥22,或不管FeNO水平如何,3次连续ACT评分≥24。此后,监测ACT评分、急性哮喘发作次数、缓解用药和FeNO至48周。
结果:51名患者入选本研究,27名进行第3步治疗,24名进行第4步治疗,所有这些患者接受减量治疗。两组即使在减量治疗后,ACT评分和缓解用药次数上仍维持稳定。相反,第4步治疗患者的FeNO水平逐渐增加,而第3步治疗患者的FeNO水平在递减即刻增加。减量治疗判断为安全,因为48周内缓解用药次数和中等或更为严重的哮喘发作与减量治疗前无显著变化。
结论:如果固定剂量的布地奈德/福莫特罗(每日4揿)治疗3~6个月,哮喘在临床症状和气道炎症方面得到完全控制,可以安全地进行减量治疗,剂量可降至每天2揿。
(林江涛 审校)
Allergol Int. 2012 Oct 25. [Epub ahead of print]
Asthma Control Can Be Maintained after Fixed-Dose, Budesonide/Formoterol Combination Inhaler Therapy is Stepped Down from Medium to Low Dose.
Hojo M, Mizutani T, Iikura M, Hirano S, Kobayashi N, Sugiyama H.
Source
Division of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan.
Abstract
BACKGROUND: In cases using a budesonide/formoterol combination inhaler, many patients are started on fixed-dose treatment at 640/18μg(4 puffs) daily, but there are no guidelines yet regarding the step-down method when control has been maintained.
METHODS: Patients with moderate asthma treated with either budesonide 400μg and salmeterol 100μg(GINA step3 group) or salmeterol/fluticasone 250 at 2 puffs (GINA step4 group) were enrolled and started on therapy of budesonide/formoterol 4 puffs. Thereafter, step-down to 2 puffs was performed if either of the following criteria was met at 8-week intervals: fractional exhaled nitric oxide (FeNO) ≤28 ppb plus asthma control test (ACT) score ≥22, or ACT score ≥24 at 3 consecutive visits regardless of FeNO level. Thereafter, changes in ACT score, the number of acute exacerbations and reliever use, and FeNO level were monitored through 48th week.
RESULTS: Fifty-one patients, 27 in step3 group and 24 in step4 group, underwent step-down. ACT scores and the number of reliever use remained stable in both groups even after step-down. In contrast, FeNO levels increased gradually in step4 group, whereas in the step3 group they increased immediately after step-down. Step-down was considered to be safely performed because the numbers of reliever use and those of moderate or more severe exacerbations during the 48-week period has not changed significantly compared to before step-down.
CONCLUSIONS: If complete control of asthma, not only of clinical symptoms but also airway inflammation, is achieved by 3-6 months of fixed-dose budesonide/formoterol 4 puffs/day, it should be possible to safely perform step-down to 2 puffs/day.
Allergol Int. 2012 Oct 25. [Epub ahead of print]
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地中海饮食对哮喘症状、肺功能和全身炎症的影响:随机、对照临床试验
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激素吸入治疗在哮喘患者和COPD患者血管性气道重构中的作用