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1 - Clinical perspectives

Published online by Cambridge University Press:  05 August 2011

J. S. Gravenstein
Affiliation:
University of Florida
Michael B. Jaffe
Affiliation:
Philip Healthcare
Nikolaus Gravenstein
Affiliation:
University of Florida
David A. Paulus
Affiliation:
University of Florida
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Summary

This chapter examines different time- and volume-based capnograms, and analyzes them from a clinical perspective, with a special focus on problems related to ventilation, by far the most common clinical application of capnography. A water trap with a large internal volume can introduce artifacts when high airway pressures during inspiration compress gas in the trap. The capnogram provides evidence of acutely reduced pulmonary perfusion coincident with a drop in cardiac output. The most important use of capnography in the field, in the intensive care unit, and in the operating room comes with the establishment of an artificial airway. An individual tracing of the time-based capnogram left a number of questions unanswered, which the single breath volume-based capnogram provides. The data offered by the volume-based capnogram refine the information offered by time-based capnography.
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Chapter
Information
Capnography , pp. 1 - 9
Publisher: Cambridge University Press
Print publication year: 2011

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