儿童哮喘患者加用沙美特罗治疗与氟替卡松剂量加倍治疗比较:一项双盲随机试验(VIAPAED)
2009/12/15
原理:对于标准剂量糖皮质激素吸入治疗(ICS)不能控制的哮喘患儿,治疗指南推荐可以增加糖皮质激素的吸入剂量或加用其它治疗药物,如长效β受体激动剂(LABA)。本试验旨在哮喘控制不佳的患儿中比较糖皮质激素吸入剂量加倍治疗(丙酸氟替卡松[FP];200 μg,每日2次)及糖皮质激素吸入治疗加用长效β受体激动剂治疗(SFC,沙美特罗50 μg/ FP 100 μg,每日2次)的有效性和安全性。
方法:年龄为4-16岁患儿纳入该多中心、随机、双盲、双模拟平行组研究。在为期14天的治疗期内,所有患儿均采用吸入FP 100μg治疗,每日2次。7天后仍有持续症状的患者随机分为2组,在随后8周的时间内接受Diskus(R)治疗(SFC 50μg /100μg每日2次;或者FP 200 μg每日2次)。主要终点是晨间PEF与基线状态相比的平均变化值。我们的原始统计假设是采用自适应中期分析,SFC不优于FP治疗,因此研究提前终止。
结果:来自39个中心的441名患者入选本项研究。其中64%的患者进入后期随机分组(SFC组138名;FP组145名)。8周后,SFC组患者的主要终点和次要终点均得到显著改善。晨间PEF平均增加30.4±34.1 L/min(SFC组) 和16.7±35.8 L/min(FP组) 。与基线状态相比,ITT 组经过SFC治疗后平均PEF改善(95% CI)显著增加(+8.6 L/min, CI: [1.3; infinity])。与接受FP治疗的患者相比,SFC组患者无哮喘症状的天数增加8.7%(CI: [1.2;16.3]),无沙丁胺醇使用的天数也增加8%(CI: [0.6;15.3])。与FP组患者相比(2.7 +/- 2.7周),SFC组哮喘控制较好而且持续时间较长(3.4 +/- 2.7周, P = 0.02)。两种治疗方式患者均能良好耐受。SFC 和FP组患者分别有3名和6名患者出现哮喘恶化,分别有2名和1名患者出现严重不良反应。
结论:对于低剂量糖皮质激素吸入治疗不能控制的持续哮喘患儿,联合应用吸入糖皮质激素和长效β受体激动剂治疗较增加糖皮质激素吸入剂量更为有效。我们的结果推荐LABA联合低剂量ICS用于4岁以上儿童的哮喘控制。
(陈欣 审校)
Pediatr Pulmonol. 2009 Oct 12. [Epub ahead of print] Links
Add-on salmeterol compared to double dose fluticasone in pediatric asthma: A double-blind, randomized trial (VIAPAED).
Gappa M, Zachgo W, von Berg A, Kamin W, Stern-Sträter C, Steinkamp G; VIAPAED Study Group.
Hannover Medical School, Hannover, Germany.
RATIONALE: In asthmatic children whose symptoms are uncontrolled on standard doses of inhaled corticosteroids (ICS), guidelines recommend to either increase the ICS dose or to add further controller medication, e.g. a long acting ss2-agonist (LABA). The aim of this study was to compare the efficacy and safety of doubling the dose of ICS (fluticasone proprionate FP 200 microg twice daily) with adding a long-acting beta-2 agonist to the ICS (SFC, salmeterol 50 microg/ FP 100 microg twice daily) in children with uncontrolled asthma.
METHODS: Children between 4 and 16 years of age were eligible for this multicenter, randomized, double blind, double dummy, parallel-group study. During a 14-day run-in phase, all children inhaled FP 100 microg b.i.d. Patients with persistent symptoms on >/=7 of 14 days were randomized to 8 weeks treatment with a Diskus(R) containing either SFC 50 microg/100 microg b.i.d. or FP 200 microg b.i.d.. The primary endpoint was the mean change in morning (a.m.) PEF from baseline. The initial statistical hypothesis of non-inferiority of SFC vs. FP was confirmed in an adaptive interim analysis, so that the study was terminated prematurely.
RESULTS: 441 patients from 39 centers entered the run-in phase, and 64% of these were randomized to treatment (N = 138 to SFC and N = 145 to FP). After 8 weeks, patients on SFC had significantly better results for primary and secondary endpoints: The mean increase in morning PEF was 30.4 +/- 34.1 L/min in the SFC group and 16.7 +/- 35.8 L/min in the fluticasone group, and the mean (95% CI) improvement from baseline a.m. PEF in the ITT group was significantly larger after SFC (+8.6 L/min, CI: [1.3; infinity]). Patients in the SFC group experienced 8.7% (CI: [1.2;16.3]) more days without asthma symptoms and 8.0% (CI: [0.6;15.3]) more days without salbutamol than patients receiving FP. Good asthma control was achieved for a longer period in the SFC (3.4 +/- 2.7 weeks) group than in the FP group (2.7 +/- 2.7, P = 0.02). Both treatments were generally well tolerated. Asthma exacerbations were recorded in 3 and 6 and SAEs in 2 and 1 patients from the SFC and FP groups, respectively.
CONCLUSIONS: In children with persistent asthma inadequately controlled on low dose ICS alone, adding a long acting beta-2-agonist to ICS in a single inhaler was more effective than doubling the ICS dose. These results support recommendations of adding LABA to low-dose ICS as the preferred controller option for children older than 4 years with symptomatic asthma. Pediatr Pulmonol. (c)2009 Wiley-Liss, Inc.
Pediatr Pulmonol. 2009 Oct 12. [Epub ahead of print] Links
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沙美特罗/丙酸氟替卡松与双倍剂量丙酸氟替卡松对哮喘儿童肺功能和哮喘控制的作用
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