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Study of Influence of Respiratory Rate to Airway Resistance in Patients with Pulmonary Emphysema Nobuko Nakamoto 1 , Yumiko Nakasuji 1 , Kayoko Kitano 1 , Masako Izukawa 1 , Sumio Hanamoto 1 , Takashi Ohsugi 1 1Osaka Prefectural Habikino Hospital Keyword: 肺気腫(pulmonary emphysema) , 気道抵抗(airway resistance) , 安静呼吸法(near normal breathing) pp.669-672
Published Date 1991/7/15
DOI https://doi.org/10.11477/mf.1404900310
  • Abstract
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Application of the panting method is very difficult for patients with pulmonary emphysema (PE). We attempted to measure airway resistance (Raw) during quiet breathing and changing respiratory rate step by step in patients with PE using a pressure-type bodyple-thysmograph system (BX-82) correcting measured values by temperature and humidity. Influence of the respira-tory rate to Raw was studied at 0.5l/sec of inspiratory and expiratory flow. Whenever the respiratory rate was going up, the Raw increased in spite of the increase of the thoracic gas volume. Raw (2Hz) was about one and a half times as high as Raw (quiet breathing).


Copyright © 1991, 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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