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Deterioration of Oxygenation with Mechanical Ventilation, and the Lung Time Constant and Cardiac Output Masahiko Mima 1 , Sanae Matsumoto 1 , Keiko Oishi 1 1Department of Anesthesiology, Kansai Medical University Keyword: 機械的換気(mechanical ventilation) , 心拍出量(cardiac output) , 肺時定数(lung time constant) pp.175-180
Published Date 1991/2/15
DOI https://doi.org/10.11477/mf.1404900227
  • Abstract
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The influence of the lung time constant (tc) and preset volume on a ventilator-cardiac output ratio (Vv/Q) on the decrease in the oxygenation of blood (PaO2 /FiO2) due possibly to mechanical controlled ventila-tion, was examined with special reference to the time of passive expiration in 18 patients. The degree of deterio-ration of oxygenation appeared to depend mainly on the time following FRC, during which the blood continued to perfuse the lungs until the next active insufflation by the ventilator.


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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