CMSA FCS(SA) Intermediate Practice Questions - Fellowship Of The College Of Surgeons Of South Africa - Intermediate Examination Exam

Which statement best distinguishes hypoxia from hypoxaemia in critical care?

Hypoxaemia is inadequate tissue oxygen use; hypoxia is only low PaO2 The terms are interchangeable and both mean low FiO2 only Hypoxaemia refers to low arterial oxygen content/PaO2; hypoxia is inadequate tissue oxygenation Hypoxia always implies anaemia whereas hypoxaemia never does

Correct Answer:

Hypoxaemia refers to low arterial oxygen content/PaO2; hypoxia is inadequate tissue oxygenation

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