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Standard values and prediction equations for respiratory function measurements (II):Flow-volume curve measurements in healthy Japanese Fujimoto Junko 1 , Hata Michiko 1 , Kondo Mamiko 1 , Hirota Meisei 2 , Shima Kenji 2 1Central Laboratory Tokushima University Hospital 2Clinical Laboratory Dept., School of Medicine, Tokushima University pp.673-679
Published Date 1986/6/15
DOI https://doi.org/10.11477/mf.1404204889
  • Abstract
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 Normal parameters for flow-volume measurement using a computerized spirometer (FUDAC 80) in 1401 healthy subjects ranged from 20 to 79 years of age were reported.

 The subjects were separated by sex and grouped by age in decades. The parameters used in this study include maximal flow at 75 per cent (V75), 50 per cent (V50), 25 per cent (V25), 10 per cent (V10), of the forced vital capacity, peakflow (PEFR) and their ratios with vital capacity (VC), and height (Ht). All the values obtained were decreasing in parallel with age in both sexes, and this tendency was higher in male. The flow rates adjusted with vital capacity (V/VC) showed a decrease in the low VC range indicating an increased terminal airway resistance and/or a decreased pulmonary recoil pressure in the aged group. Prediction equations were derived from the measured values with multiple regression analysis and showed a good accordance with the previously reported values from other institutes.

 In this study, normal values and prediction equations for flow-volume measurement were obtained, and these parameters were shown to be highly reliable and appli-cable in the clinical field.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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