Chapter 19 – Oxygen Cascade




Abstract




The O2 cascade concept draws together areas of respiratory physiology covered in the previous few chapters. In an examination setting, it allows the examiner to assess your knowledge of more than one topic within a single question.





Chapter 19 Oxygen Cascade



The O2 cascade concept draws together areas of respiratory physiology covered in the previous few chapters. In an examination setting, it allows the examiner to assess your knowledge of more than one topic within a single question.



What is the oxygen cascade?


Aerobic metabolism is the body’s most efficient method of energy production. O2 tension (PO2) is high in the atmosphere (21.2 kPa) and low in the mitochondria (<5 kPa). The O2 cascade refers to the stepwise reduction in PO2 as O2 passes from the environment to the tissues (Figure 19.1).





Figure 19.1 The O2 cascade.



Explain each of the steps in the oxygen cascade


The steps along the O2 cascade are:


Sep 27, 2020 | Posted by in ANESTHESIA | Comments Off on Chapter 19 – Oxygen Cascade
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