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Chapter 6 - Gas Concentration Measurement

Published online by Cambridge University Press:  30 August 2019

By
Catriona Frankling
Edited by
Hozefa Ebrahim  and
David Ashton-Cleary
Hozefa Ebrahim
Affiliation:
University Hospitals Birmingham Foundation NHS Trust
David Ashton-Cleary
Affiliation:
Royal Cornwall Hospitals NHS Trust
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Summary

A 57-year-old man requires general anaesthesia for an emergency laparotomy due to bowel perforation. To provide safe general anaesthesia, it is necessary to monitor the oxygen concentration in the gas mixture delivered to the patient. In addition, knowledge of the fraction of inspired and expired carbon dioxide concentration is needed to ensure adequate ventilation of the patient, and to alert the anaesthetist to any issues, such as disconnection of the anaesthetic circuit. Measurement of nitrous oxide and the volatile anaesthetics is also imperative to ensure adequate anaesthesia.

Type
Chapter
Information
Maths, Physics and Clinical Measurement for Anaesthesia and Intensive Care , pp. 87 - 96
Publisher: Cambridge University Press
Print publication year: 2019

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References

Association of Anaesthetists of Great Britain and Ireland. Recommendations for standards of monitoring during anaesthesia and recovery 2015. Anaesthesia 71, 2016; 85–93.Google Scholar
Health and Safety Executive. EH40/2005 Workplace Exposure Limits (The Stationery Office, 2018).Google Scholar

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