Effect of Unilateral Carbon Dioxide Breathing on Pulmonary Blood Flow
- 31 October 1957
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Legacy Content
- Vol. 191 (2) , 399-403
- https://doi.org/10.1152/ajplegacy.1957.191.2.399
Abstract
The effect of breathing increased concentrations of carbon dioxide was studied in dogs. Each lung was independently ventilated with the chest open. The pulmonary artery pressure was recorded and blood flow determined for each lung by the Fick principle during room air breathing. After this control period, increased concentrations of carbon dioxide were substituted for room air in one lung and the above determinations repeated. In all but 2 of 11 animals the pulmonary vascular resistance fell in the CO2 lung and the blood flow to this lung increased.Keywords
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