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. 2022 Aug;16(8):555-561.
doi: 10.1111/crj.13525. Epub 2022 Jul 22.

Automated interpretation of the pulmonary function test by a portable spirometer in Chinese adults

Jun Zhou  1 , Ping Wang  1 , Leixin Guo  1 , Jin Cao  1 , Min Zhou  1 , Ranran Dai  1
Affiliations

Automated interpretation of the pulmonary function test by a portable spirometer in Chinese adults

Jun Zhou et al. Clin Respir J. 2022 Aug.

Abstract

Introduction: A portable spirometer is a promising alternative to a traditional pulmonary function test (PFT) spirometer for respiratory function evaluation.

Objectives: This study aimed to investigate the accuracy of automated interpretation of the PFT measured by a portable Yue Cloud spirometer in Chinese adults.

Methods: 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.

Results: 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).

Conclusion: The portable Yue Cloud spirometer not only yields reliable measurements of pulmonary function but also can automatically interpret the PFT results.

Keywords: automated interpretation; concordance; portable spirometer; pulmonary function test.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
Correlation analysis of spirometry outcomes from the traditional Jaeger spirometer and the portable Yue Cloud spirometer. FEV1, forced expiratory volume in the first second; FVC, forced vital capacity; MEF, maximal expiratory flow at 25%, 50%, and 75% of the forced vital capacity (MEF25, MEF50, and MEF75, respectively); MMEF, maximal mid‐expiratory flow; PEF, peak expiratory flow
FIGURE 2
FIGURE 2
Bland–Altman plots with 95% limits of agreement summarizing the results of spirometry parameters measured by the traditional Jaeger spirometer and the portable Yue Cloud spirometer. The dotted lines represent the upper and lower LoAs. FEV1, forced expiratory volume in the first second; FVC, forced vital capacity; MEF, maximal expiratory flow at 25%, 50%, and 75% of the forced vital capacity (MEF25, MEF50, and MEF75, respectively); MMEF, maximal mid‐expiratory flow; PEF, peak expiratory flow
See this image and copyright information in PMC

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