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Chapter 18 - Alveolar Gas Equation

from Section 2 - Respiratory Physiology

Published online by Cambridge University Press:  31 July 2019

David Chambers ,
Christopher Huang  and
Gareth Matthews
David Chambers
Affiliation:
Salford Royal NHS Foundation Trust
Christopher Huang
Affiliation:
University of Cambridge
Gareth Matthews
Affiliation:
University of Cambridge
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Summary

The partial pressure gradient of O2 between the alveolus and the pulmonary capillaries is one of the key factors that determine the rate of O2 diffusion across the alveolar–capillary barrier (see Chapter 10). Unfortunately, it is not possible to directly measure the PAO2. Instead, PAO2 can be estimated using the alveolar gas equation (AGE).

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Chapter
Information
Basic Physiology for Anaesthetists , pp. 77 - 79
Publisher: Cambridge University Press
Print publication year: 2019

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References

Further reading

Cruickshank, S., Hirschauer, N.. The alveolar gas equation. Continuing Educ Anaesth Crit Care Pain 2004; 4(1): 24–7.CrossRefGoogle Scholar

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