Department of Medicine, Pulmonary and Critical Care Medicine, Philipps-University of Marburg (UMR), Germany, Member of the German Center for Lung Research (DZL), Marburg, Germany.
Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany.
Int J Chron Obstruct Pulmon Dis. 2022 Jun 24;17:1477-1482. doi: 10.2147/COPD.S363493. eCollection 2022.
Body plethysmography is a fundamental method for the assessment of static lung volumes. Although equipment is provided by several manufacturers, there are no established cross-vendor tools for quality control. In the process of quality control and analysis of data on hyperinflation from the large COPD cohort COSYCONET, hints appeared that plethysmographs of different vendors might yield different values for static lung volumes. Functional residual capacity (FRC) differed about 0.67 litres between plethysmographs of the manufacturer Vyaire and Ganshorn. Absolute differences of residual lung volume (RV) and total lung capacity (TLC) were similar. It appears undeniable that differences of this magnitude have an impact on clinical interpretation. Thus, device harmonization seems to be required.
体描法是评估静态肺容量的基本方法。尽管有几家制造商提供设备，但还没有用于质量控制的跨供应商工具。在对大型 COPD 队列 COSYCONET 的过度充气进行质量控制和数据分析的过程中，出现了这样的迹象：不同供应商的体描仪可能会对静态肺容量产生不同的值。Vyaire 和 Ganshorn 制造商的体描仪之间的功能残气量（FRC）差异约为 0.67 升。残气量（RV）和总肺容量（TLC）的绝对差异相似。这种幅度的差异显然会对临床解释产生影响，这是不可否认的。因此，似乎需要设备协调。
