You discover that the patient’s PIVC has tissued with subsequent extravasation of your TIVA anaesthetic. You replace the cannula. The rest of the case proceeds uneventfully and the patient is extubated and taken to recovery.
Just as you are getting back in your car to go home, your registrar calls again to say that the patient has suddenly become obtunded in PACU. A CT reveals catastrophic cerebral haemorrhage.
What are the criteria for the diagnosis of brain stem death?