Bilateral reappearance of the cortical SEP in a comatose patient after cardiac arrest: Pitfall or reality?

Here, we report the case of a patient surviving after cardiac arrest remaining in a persistent vegetative state (Cerebral Performance Categories-CPC 4) in the first days after resuscitation and dying (CPC 5) 16 days after the event, in whom after a first early (14 hours) SEP recording, in which a bilateral absence of cortical SEPs was reported, a second recording (at about 72 hours from cardiac arrest) showed bilateral presence of a negative/positive deflection at an absolute latency where the N20-P25 cortical complex in usually expected.