Estimation of Cardiac Output from the Rate of Change of Alveolar Carbon Dioxide Pressure during Rebreathing
- 1 April 1980
- journal article
- research article
- Published by Portland Press Ltd. in Clinical Science
- Vol. 58 (4) , 263-270
- https://doi.org/10.1042/cs0580263
Abstract
A new CO2-rebreathing method for estimating cardiac output is described, and compared with a method employing N2O performed at the same time. The subject inhales from a reservoir of 30% O2 in N2 and rebreathes into and out of an empty bag for 10 s. Oxygenated mixed venous CO2 pressure is then determined by rebreathing 7-15% CO2 in O2, the mixture being selected to obtain a plateau of CO2 concentration. The method can be employed for estimating pulmonary blood flow during physiological studies in subjects with normal lungs.This publication has 5 references indexed in Scilit:
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