脉冲振荡法与体积描记法测定气道阻力的对比分析

Analysis on the ability of impulse oscillometry and lung plethysmography to detect airway resistance--a comparative study

目的探讨新兴的脉冲振荡技术(IOS)和传统的体积描记技术测定气道阻力(Raw)的相关性,为新技术新方法的标准化应用与推广提供依据。方法分别对217例受试者用两种方法同期进行Raw的测定,然后对结果进行比较分析。结果两种方法测定的Raw呈现显著正相关(P<0.01),其中体积描记法测定的Raw与脉冲振荡法测定的中心Raw(R20)实测值之间差异无统计学意义(P>0.05),而与总的Raw(R5)等实测值之间差异有统计学意义(P<0.01)。结论用脉冲振荡法与公认的体积描记法测定的Raw结果一致,且方法简便、配合容易、价格低廉、信息全面、判读直观,是对传统肺功能检查技术的一个极好的补充手段,值得大力推广应用。

Objective To explore the relationship between impulse oscillometry and lung plethysmography,both of which can detect airway resistance（Raw）,for more evidence in clinic application and standardization.Methods A total of 217 subjects were enrolled and conducted on Raw tests through impulse oscillometry and lung plethysmography respectively and the results were compared.Results The correlation analysis showed that the Raw measured by impulse oscillometry was positively correlated with that of lung plethysmography（P〈0.01）.The Raw results（R20）were not statistically different between impulse oscillometry measurement and lung plethysmography measurement（P〉0.05）.Then,Raw（R5）displayed statistical difference between the two groups（P〈0.01）.Conclusion The Raw measured by impulse oscillometry was consistent with that measured by lung plethysmography.Being easy to operate and read,and economic,the impulse oscillometry providing all-round information is necessary and useful supplement to traditional lung function test worth widespread use.