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Clinical Value of a Desktop Spirometer (HI-801) for Spirometry Screening  

Choi, Hye Sook (Department of Pulmonary and Critical Care Medicine, Kyung Hee University College of Medicine, Kyung Hee Medical Center)
Choi, Cheon Woong (Department of Pulmonary and Critical Care Medicine, Kyung Hee University College of Medicine, East-West Neomedical Center)
Park, Myung Jae (Department of Pulmonary and Critical Care Medicine, Kyung Hee University College of Medicine, Kyung Hee Medical Center)
Kang, Hong Mo (Department of Pulmonary and Critical Care Medicine, Kyung Hee University College of Medicine, Kyung Hee Medical Center)
Yoo, Hong Ji (Department of Pulmonary and Critical Care Medicine, Kyung Hee University College of Medicine, East-West Neomedical Center)
Publication Information
Tuberculosis and Respiratory Diseases / v.62, no.4, 2007 , pp. 276-283 More about this Journal
Abstract
Background: A national health care initiative recommends routine spirometry screening of all smokers over age 45 or patients with respiratory symptoms. In response to the recommendation, new, simple, and inexpensive desktop spirometers for the purpose of promoting widespread spirometric screening were marketed. The performance of these spirometers was evaluated in vivo testing with healthy subjects. However, the clinical setting allows spirometric assessment of various pathologic combinations of flow and volume. Objective: The aim of this study was to compare the accuracy of a desktop spirometer to a standard laboratory spirometer, in a clinical setting with pathologic pulmonary function. Method: In a health check-up center, where screening pulmonary funct test was performed using the HI-801 spirometer. Subjects who revealed the ventilation defect in screening spirometry, performed the spirometry again using the standard Vmax spectra 22d spirometer in a tertiary care hospital pulmonary function laboratory. Pulmonary function test with both spirometer was performed according to the guidelines of the American Thoracic Society. Results: 109 patients were enrolled. Pulmonary function measurements (FVC, $FEV_1$, PEFR, FEF25%-75%) from the HI-801 correlated closely (r=0.94, 0.93, 0.81, 0.84, respectively) with those performed with the Vmax spectra 22d and showed the good limits of agreement and differences between the 2 devices; FVC +0.35 L, $FEV_1$ +0.16 L, PEFR +1.85 L/s, FEF25%-75%-0.13 L/s. With the exception of $FEV_1$, FEF25%-75%, these differences were significant(p<0.05) but small. Conclusion: The HI-801 spirometer is comparable to the standard laboratory spirometer, Vmax spectra 22d, with high accurary for $FEV_1$ and FVC and acceptable differences for clinical use.
Keywords
Screening; Spirometry; Desktop spirometer; Laboratory spirometer;
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