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Factors affecting 13C‐natural abundance measurement of breath carbon dioxide during surgery: absorption of carbon dioxide during endoscopic procedures

Factors affecting 13C‐natural abundance measurement of breath carbon dioxide during surgery:... The aim of this paper is to review the factors which may affect breath 13CO2/12CO2 natural abundance in patients undergoing surgery or intensive care. Intravenous glucose administration is a major determinant of the 13CO2/12CO2 of breath as intravenous glucose preparations are almost all derived from cornstarch. In addition, the oxidation of endogenous substrates can affect the 13CO2/12CO2 ratio. During many endoscopic procedures, such as laparoscopic surgery, carbon dioxide insufflation is used to provide a working space. As medical CO2 is relatively depleted in 13CO2 compared with endogenous and exogenous metabolic CO2 sources, breath 13CO2/12CO2 measurements can be used to estimate CO2 absorption during these procedures. However, all these factors may also be affected by the bicarbonate pool, making a definitive attribution of changes in breath 13CO2/12CO2 to a single factor problematic. Copyright © 2008 John Wiley & Sons, Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rapid Communications in Mass Spectrometry Wiley

Factors affecting 13C‐natural abundance measurement of breath carbon dioxide during surgery: absorption of carbon dioxide during endoscopic procedures

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References (26)

Publisher
Wiley
Copyright
Copyright © 2008 Wiley Subscription Services
ISSN
0951-4198
eISSN
1097-0231
DOI
10.1002/rcm.3572
pmid
18438761
Publisher site
See Article on Publisher Site

Abstract

The aim of this paper is to review the factors which may affect breath 13CO2/12CO2 natural abundance in patients undergoing surgery or intensive care. Intravenous glucose administration is a major determinant of the 13CO2/12CO2 of breath as intravenous glucose preparations are almost all derived from cornstarch. In addition, the oxidation of endogenous substrates can affect the 13CO2/12CO2 ratio. During many endoscopic procedures, such as laparoscopic surgery, carbon dioxide insufflation is used to provide a working space. As medical CO2 is relatively depleted in 13CO2 compared with endogenous and exogenous metabolic CO2 sources, breath 13CO2/12CO2 measurements can be used to estimate CO2 absorption during these procedures. However, all these factors may also be affected by the bicarbonate pool, making a definitive attribution of changes in breath 13CO2/12CO2 to a single factor problematic. Copyright © 2008 John Wiley & Sons, Ltd.

Journal

Rapid Communications in Mass SpectrometryWiley

Published: Jan 15, 2008

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