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Japanese

An experimental model for study of cough dynamics Shiroo Yamazaki 1 , Tetsushi Suito 1 , Tsuneo Ishihara 1 1Department of Surgery, School of Medicine, Keio University pp.379-383
Published Date 1984/4/15
DOI https://doi.org/10.11477/mf.1404204427
  • Abstract
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 To evaluate the factors affecting the scrubbing action of coughing and to establish a quantitative assessment of scrubbing force, we used an experi-mental model which was composed of rigid plastic tube fitted with a pneumotachograph and an anes-thetic air bag. An iron ball was placed in the tube and after the intraluminal pressure was raised by oxygen insulation from the oxygen bomb under the closure of the outlet, the outlet was rapidly opened and then the ball was blowed out on the horizontal plate. The distance gained by the ball was considered as a quantitative assessment of scrub-bing force. It was suggested that the peak flow (max) and the expelled air volume (V) during coughing would be importance in assessing the scrubbing action of one coughing and so the index of the mechanical force of one coughing could be defined as V2max×V.


Copyright © 1984, 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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