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Japanese

Studies on Cardiopulmonary Functions.:II. A Comparison With Cardiocirculatory Disease and Pulmonary Disease. Wataru Mizuta 1 1Department of Medicine, Yamaguchi University Medical School. pp.477-484
Published Date 1959/5/15
DOI https://doi.org/10.11477/mf.1404200769
  • Abstract
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 The disturbances of gas and blood distribution in the lungs, and of the diffusion across the res-piratory membrane, have been studied in thirty-six cases of patients with different cardiocirculatory diseases (Group C) and in thirty-four cases of patients with different pulmonary diseases (Group P) by a method employing two distinct levels of oxygenation. After that a comparison was made betwe-en these two groups with these cardiopulmonary functions.

 No significant differences could be found between Group C and P with reference to the arterial blood oxygen saturation and pressure at rest. The expired air volume was increased in both groups, but in Group P it was more increased than Group C. The arterial blood carbon dioxide tension was increased in one case in Group C and in three cases in Group P, but it was decreased in some cases of cardiac diseases. In Group C a remarkable decrease was found in the mixed venous blood oxygen saturation and cardiac index, and they became lower as the disease progressed. The diffusion abnor-malities in the lungs were found more in Group C than in Group P, but the reverse was found on the percent dead space. The percent venous admixture was similarly increased in both groups. In the later stage of these diseases, no significant differences could be found any longer between these two groups with reference to the ventilation-perfusion relationships in the lungs, except a remarkable decrease of the mixed venous blood oxygen saturation and cardiac index in Group C.

 The significance and possible causes of these findings were discussed.


Copyright © 1959, 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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