This station will explore your knowledge of the physiology associated with the interpretation of Blood
Gases and oxygen analysis.
How would you interpret this Arterial Oxygen Tension?
PaO2 = 24.6 mmHg (3.2 kPa) 
This viva tested the candidates’ knowledge of hypoxaemia, associated respiratory physiology and oxygen measurement. Specifically measurement of oxygen tension, the alveolar gas equation and physiological responses to hypoxia. Measurement of oxygen tension, in particular the principles behind the Clark electrode, was well done. The area candidates struggled the most was explaining and integrating arterial blood gases and the physiological principles surrounding them.