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Japanese

The appraisal of role of power in end-inspiratory plateau (EIP) on ventilator, and airway dynamics Masahiko Mima 1 , Toshihiro Imanishi 1 , Hitoshi Taguchi 1 1Dept. of Anesthesiology, Kansai Med. Univ. pp.949-955
Published Date 1981/9/15
DOI https://doi.org/10.11477/mf.1404203838
  • Abstract
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Two types of ventilations with end-inspiratory-plateau duration time of 30%, and 50% of total inspiratory phase were investigated under venti-latory frequency of 20, 30, 40, 50 and 60 per minute respectively with model lung on ventila-tor. Ventilatory pressure, flow, volume and several other additives necessary to calculate air-way resistance, compliance and time constant were measured simultaneously through ventilatory cycles. Ventilatory volume was observed to decrease by 9%, 8%, and 8% on ventilatory frequency of 40, 50, and 60 per minute respective-ly, with EIP 30%, and by 6% on ventilatory frequency of 60 per minute with EIP 50% while ventilatory power showed parallel increment during ventilation in order of augmented ventila-tory frequencies with both EIP 30% and EIP 50%, indicating better preservation of power with EIP 50% than EIP 30% under ventilatory frequency of 40, 50, and 60 per minute where there was elevated airway resistance or prolong-ed time constant.

The results indicate that predominance of EIP 50% to EIP 30% in maintenance of preset ventilatory volume was supported by more en-hanced power preservation on ventilator with EIP 50% than EIP 30% during the course of ventilatory frequency increment.


Copyright © 1981, 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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