Neurocritical Care Society — Guidelines for Neuroprognostication in Comatose Adult Survivors of Cardiac Arrest

Defer unconfounded multimodal prognosis until at least 72 hours after ROSC without cooling or 72 hours after rewarming after hypothermia. Use technically valid test-specific findings and observe longer when prognosis is indeterminate; corneal absence, motor response and early myoclonus alone are not reliable adverse predictors.