Editors’ note: Clinical Reasoning: Prognostication after cardiac arrest: What do we really know?

In reference to “Clinical Reasoning: Prognostication after cardiac arrest: What do we really know?,” Drs. Freund and Kaplan comment on the difficulty of distinguishing Lance-Adams syndrome (“chronic posthypoxic myoclonus”) from myoclonic status epilepticus, based on postarrest onset or outcomes, as there is substantial variability in both. They suggest further study into clinical, neuroimaging, and neurophysiologic correlates of posthypoxic myoclonus.