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Wallace B Wee^1,2,3,4, Layan M Bashi⁴, Renee Jensen⁵

¹Respiratory Medicine, Hospital for Sick Children, Toronto, Ontario, Canada.

Pediatric pulmonology

|July 11, 2025

概括

肺清除指数 (LCI) 是一种可重复和敏感的衡量原发性纤维动力障碍 (PCD) 肺部疾病的指标. 这种肺功能测试对临床试验有希望,特别是在早期发现疾病时.

科学领域:

肺部医学肺部医学
儿科肺病学儿科肺病学
呼吸系统生理学呼吸系统生理学

背景情况:

原发性纤维动力障碍 (PCD) 是一种影响纤维的遗传疾病,导致粘膜纤维清除受损和渐进性肺病.
标准螺旋计对PCD患者早期的亚临床肺病不敏感.
多重呼吸洗,测量肺清除指数 (LCI),更敏感,但其在PCD中的重复性尚未确立.

研究的目的:

评估肺清除指数 (LCI) 的同一天和28天的可重复性,用于诊断患有PCD的儿科和成人患者.
确定LCI是否是监测PCD患者肺部健康的可靠措施.

主要方法:

6岁以上的23名参与者接受了肺功能测试,他们被确诊患有PCD.
测试包括1秒z-score (FEV1z) 和LCI中的强迫呼吸量,在同一天或28天后重复.
使用类内相关性 (ICC) 和布兰德-阿尔特曼图分析了可重复性.

主要成果:

同一天LCI的ICC为0.95和28天ICC为0.71,表明良好的中等重复性.
FEV1z显示出高的重复性 (ICC 0.9 - 0.92).
异常的LCI普遍存在 (18/29测试),即使在FEV1z正常的参与者中,也表明LCI可以检测到早期的肺功能障碍.

结论:

肺清除指数 (LCI) 在PCD患者中显示出良好的重复性和敏感性.
LCI是PCD临床试验的潜在结果指标,特别是用于识别早期或亚临床肺部疾病.

关键词:

测量理论测量理论多重呼吸洗 (MULTIPLE BREATH WASH OUT) 是一个非常严重的疾病.儿科儿科儿科主要的状动力障碍症.螺旋测量是一种螺旋测量.

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