The initial information given to the candidates was -
What is normal cerebral blood flow?
This viva explored the candidates’ knowledge in relation to the following points
Cerebral Blood Flow, it’s measurement and factors that alter it
Cerebral Blood Flow and acute changes in altitude
Morphine, typical dose, CNS effects and metabolites
Examination feedback: There was good understanding of cerebral blood flow, and most
candidates used figures to good effect during the viva. Areas of weakness were an
understanding of the methods of measuring CBF and differential flow to the white and gray
matter. Candidates also were less confident with the different CNS effects of morphine.
Adapting factual knowledge to define what would happen in states of altered physiology was
also handled poorly.