Department of Respiratory and Critical Care Medicine, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Clin Respir J. 2022 Aug;16(8):555-561. doi: 10.1111/crj.13525. Epub 2022 Jul 22.
A portable spirometer is a promising alternative to a traditional pulmonary function test (PFT) spirometer for respiratory function evaluation.
This study aimed to investigate the accuracy of automated interpretation of the PFT measured by a portable Yue Cloud spirometer in Chinese adults.
The PFT was performed to evaluate subjects prospectively enrolled at Ruijin Hospital (n = 220). A Yue Cloud spirometer and a conventional Jaeger MasterScreen device were applied to each patient with a 20-min quiescent period between each measurement. Pulmonary function parameters, including forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), peak expiratory flow (PEF), maximal expiratory flow at 25%, 50%, and 75% of the FVC (MEF25, MEF50, and MEF75, respectively), and maximal mid-expiratory flow (MMEF), were compared by correlation analyses and Bland-Altman methods. The Yue Cloud spirometer automatically interpreted the PFT results, and a conventional strategy was performed to interpret the PFT results obtained by the Jaeger machine. Concordance of the categorization of pulmonary dysfunction, small airway dysfunction, and severity was analyzed by the kappa (κ) statistic.
Significantly similar correlations of all variables measured with the two spirometers were observed (all p < 0.001). No significant bias was observed in any of the measured spirometer variables. A satisfactory concordance of pulmonary function and severity classification was observed between the automated interpretation results obtained with the Yue Cloud spirometer vs. a conventional spirometer interpretation strategy (all κ > 0.80).
The portable Yue Cloud spirometer not only yields reliable measurements of pulmonary function but also can automatically interpret the PFT results.
便携式肺活量计是一种有前途的替代传统肺功能测试（PFT）肺活量计的设备，可用于呼吸功能评估。
本研究旨在探讨便携式 Yue Cloud 肺活量计测量的 PFT 自动解读在中国人中的准确性。
前瞻性地在瑞金医院招募了 220 名受试者进行 PFT 检查。每位患者使用 Yue Cloud 肺活量计和常规的 Jaeger MasterScreen 设备进行测量，两次测量之间有 20 分钟的安静期。通过相关性分析和 Bland-Altman 方法比较了肺活量（FVC）、第一秒用力呼气量（FEV1）、呼气峰流速（PEF）、FVC 时 25%、50%和 75%的最大呼气流量（MEF25、MEF50 和 MEF75）以及最大中期呼气流量（MMEF）等肺功能参数。Yue Cloud 肺活量计自动解读 PFT 结果，采用常规策略解读 Jaeger 机器获得的 PFT 结果。采用 Kappa（κ）统计分析肺功能障碍、小气道功能障碍和严重程度分类的一致性。
两种肺活量计测量的所有变量均具有显著相似的相关性（均 P<0.001）。两种测量的肺活量计变量均无显著偏倚。使用 Yue Cloud 肺活量计自动解读结果与常规肺活量计解读策略的肺功能和严重程度分类具有良好的一致性（均 κ>0.80）。
便携式 Yue Cloud 肺活量计不仅可以可靠地测量肺功能，还可以自动解读 PFT 结果。
