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Analysis of Respiratory Impedance—Oscillation Technique— Tomoyuki Tomita 1 1Department of Internal Medicine, School of Medicine, Keio University pp.1117-1124
Published Date 1970/12/15
DOI https://doi.org/10.11477/mf.1404202218
  • Abstract
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The admittance of the respiratory system was measured on 7 healthy and 13 diseased by the forced oscillation method.

Based upon the data obtained Ⅰ analysed the fractional admittance on the lung-thorax system, the airway proximal to the glottis (upper-airway) as well as on the cheeks se-parately.

On the low cycle range (3~10 Hz) the upper airway admittance revealed low values.

On approximately 20 Hz the admittance cal-culated on the cheeks revealed significantly large values.

Over the 30 Hz range the fractional admit-tance on the cheeks was found small while the upper airway admittance (other than cheeks) was found larger.

The total respiratory impedance (other than cheeks) of diseased revealed significantly larger values on the low cycle range, but smaller values on the high cycle range, than those of healthy.


Copyright © 1970, 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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