Lancet Respir Med:噻托溴铵治疗1至5岁持续性哮喘症状儿童怎么样?

2018-02-24 吴星 环球医学

2018年2月,发表在《Lancet Respir Med》的一项由荷兰、德国、美国和丹麦科学家进行的随机、双盲、安慰剂对照试验,考察了噻托溴铵在1~5岁持续性哮喘症状儿童中的有效性和安全性。

2018年2月,发表在《Lancet Respir Med》的一项由荷兰、德国、美国和丹麦科学家进行的随机、双盲、安慰剂对照试验,考察了噻托溴铵在1~5岁持续性哮喘症状儿童中的有效性和安全性。

背景:很少有研究评价过潜在哮喘药物在年龄小于5岁的儿童中的有效性和安全性。研究者描述性地评价了噻托溴铵(一种长效抗胆碱能药物)在1~5岁持续性哮喘症状儿童中的有效性和安全性。

方法:在亚洲、欧洲和北美11个国家的32个医院、诊所和临床试验机构开展这项为期12周的探索性、随机、双盲、安慰剂平行对照、2期、多中心试验。纳入年龄在1至5岁、有至少6个月持续哮喘症状且需要吸入糖皮质激素的儿童。使用互动式语音或基于网络的应答系统,将患者随机分配至使用每天1次噻托溴铵2.5 μg、噻托溴铵5 μg,或安慰剂,作为吸入性糖皮质激素(有或无更多对照药物)的辅助药物。对患者和研究者就研究分配设盲。通过Respimat吸入器给予噻托溴铵,2.5 μg组每次吸入1.25 μg,共吸2次;5 μg组每次吸入2.5 μg,共吸2次,安慰剂组分2次吸入。主要结局安全性为(通过比较噻托溴铵组与安慰剂组之间的不良事件来评价)和有效性(从基线至12周,平均每周日间哮喘症状联合评分变化)。治疗影响的统计分析为探索性的;尽管定义了终点,但仅用于描述性分析。在所有使用至少1剂分配的治疗药物的患者中进行安全性和主要分析。研究的注册地址为ClinicalTrials.gov(NCT01634113)且已经完成。

结果:2012年7月26日至2014年12月4日,102例儿童被随机分配至3个治疗组(36例使用噻托溴铵2.5 μg,32例使用噻托溴铵5 μg,34例使用安慰剂)。101例儿童完成研究并被纳入分析。任何组之间,基线至12周时,校正后白天平均每周哮喘症状联合评分变化无显著差异。噻托溴铵2.5 μg与安慰剂组之间的校正平均差为-0.080(95% CI -0.312~0.152),噻托溴铵5 μg与安慰剂组之间的校正平均差为-0.048(-0.292~0.195)。尽管无组间正式统计学比较,但噻托溴铵治疗组的不良事件频率低于安慰剂组(噻托溴铵2.5 μg组36例儿童中20例[56%],噻托溴铵5 μg组31例儿童中18例[58%],安慰剂组34例儿童中25例[74%])。安慰剂组(34例儿童中10例[29%])报告哮喘恶化作为不良事件的儿童比例高于噻托溴铵组(噻托溴铵2.5 μg组36例儿童中5例[14%],噻托溴铵5 μg组31例儿童中2例[6%])。3例患者报告严重不良事件(均为安慰剂使用者);无不良事件引发治疗中断或死亡。

阐释:据研究者所知,这是首次评价噻托溴铵在1至5岁持续性哮喘症状儿童中安全性和有效性的研究。噻托溴铵的耐受性与安慰剂相似,这与既往在更大年龄人群的研究结果一致。虽然平均日间哮喘症状评分的组间差异均不显著,但与安慰剂相比,噻托溴铵有潜在减少哮喘加重风险的作用。研究结果受到样本量较小和描述性统计分析的制约。需要更多的有力试验,进一步评价噻托溴铵在儿童中的有效性和安全性。

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    2018-07-19 howi
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    2018-03-10 owlhealth

    不错耶.学习了

    0

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    2018-02-24 changjiu

    学习一下谢谢

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