Diagnosis and management of hypernatraemia (including urinary electrolytes) in a patient  with  diabetic  ketoacidosis.    Eight  out  of  twelve  candidates  passed  this section.

Disclaimer: the viva stem above is the original CICM stem, acquired from their publicly available past papers. However, because the college do not make the rest of the viva text or marking criteria available, the rest has been confabulated. It sounds like a plausible viva and it can be used for the purpose of practice, but all should be aware that it does not represent the "true" canonical CICM viva station.