A 50-year-old farmer with a history of alcohol abuse and depression is brought to the Emergency Department having been found collapsed in his garage.

He is semi-conscious and unable to move.

What is your differential diagnosis?

(it turned into a discussion of organophosphate poisoning)

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.