Abstract
Oxygen moves down a partial pressure gradient from inspired gas, through alveolar gas, arterial blood, systemic capillaries and cells, to reach its lowest level within the mitochondria where it is consumed (Figure 1). The steps by which the Po2 decreases from inspired gas to the mitochondria are known as the oxygen cascade and are of great practical importance. Any one step in the cascade may be increased under pathological circumstances and this may result in hypoxia. Within limits, the effect of certain increased steps in the cascade can be offset by raising the concentration of oxygen in the inspired gas. However, the quantitative relationships are totally different depending on which step in the cascade is abnormal.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Nunn, J.F. Appplied Respiratory Physiology, 3rd Edition. London: Butterworths. 1987.
Webb, S.J.S. and Nunn, J.F. Anaesthesia 22: 69–81, 1967.
Khanam, T. and Branthwaite, M.A. Anaesthesia 28: 280–290, 1973.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1989 Kluwer Academic Publisher
About this chapter
Cite this chapter
Nunn, J.F. (1989). What is the Required Inspired Oxygen Consumption during Anesthesia?. In: Stanley, T.H., Sperry, R.J. (eds) Anesthesia and the Lung. Developments in Critical Care Medicine and Anaesthesiology, vol 19. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0899-4_13
Download citation
DOI: https://doi.org/10.1007/978-94-009-0899-4_13
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6893-2
Online ISBN: 978-94-009-0899-4
eBook Packages: Springer Book Archive