Favorable Signs
If motor response is flexion or better at any time, prognosis is indeterminate
further neuroprognostication while in the ICU may not be beneficial
Any sign of definitive neurological improvement over the course of evaluation should prompt reconsideration of neurologic prognosis
t = 0 (ROSC)
TTM per institutional protocol or primary ICU team
Continuous EEG - treat electrographic status epilepticus if discovered
Document any clinical myoclonic status epilepticus
Consider NCHCT
t = 24-72 hours
Rewarming (per protocol or primary ICU team)
If there is absence of brainstem signs at any time ≥ 24 hours from ROSC, proceed to brain death evaluation
SSEP can be performed at t ≥ 48 hours if TTM was not pursued
t ≥ 72 hours
NCHCT (consider MRI if patient is stable)
If both strong predictors are present, poor outcome is very likely
Absence of bilateral pupillary AND corneal reflexes
Absence of bilateral N20 waves on SSEP
If 1 strong predictor plus 1 moderate predictor OR 2 moderate predictors are present, poor outcome is likely
Myoclonic status epilepticus < 48 hours from ROSC
Unreactive EEG, burst suppression, or electrographic status epilepticus present
Diffuse anoxic injury on CT or MRI
If none of the above apply, prognosis is indeterminate
Following SSEP and assessment of reactivity, discontinue EEG if no seizures