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Changes in Lung Volume and Blood Gases do not Alter Cross-Sectional Area of the Human Extrathoracic Trachea Tetsuri Kondo 1 , Yasushi Taguchi 1 , Ichiro Kobayashi 1 , Iunis Suzuki 1 , YaSuyo Ohta 1 1Department of Medicine, Tokai University School of Medicine Keyword: 呼吸調節 , 気道 , 迷走神経 , control of respiration , airway , vagus nerve pp.1187-1190
Published Date 1994/12/15
DOI https://doi.org/10.11477/mf.1404900972
  • Abstract
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Neural control of the human tracheal smooth muscle was indirectly assessed by measuring tracheal cross-sectional area (TXA) using computed tomography. TXA was measured in three healthy humans at differellt lung volume and blood gases. TXA and airway pressure (Paw) increased at maximal inspira-tion and during Valsalva maneuver,while both of them decreased at maximal expiration and during müller maneuver. TXA did not change at hypocapnia (~32torr) and slightly decreased at hypercapnia (~45torr).


Copyright © 1994, 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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