Abstract
EEG is essential for diagnosis of non-convulsive status epilepticus (NCSE). Two compatible diagnostic systems have been developed for this purpose during last 15 years.
The Salzburg Consensus Criteria for Nonconvulsive Status Epilepticus define unequivocal EEG patterns that confirm NCSE but also patterns that may or may not represent NCSE (i. e. "possible NCSE"). The Salzburg Criteria adopt the rigorous definitions of the American Clinical Neurophysiology Society's Standardized Critical Care EEG Terminology (ACNS-SCCET), which, in turn, became the main tool for description of EEG in all patients suspected to suffer from NCSE.
Its latest 2021 version contains new propositions for the definitions of epileptic seizures and status epilepticus that are compatible with Salzburg Criteria, as well as a proposition for the definition of "ictal-interictal continuum", which is synonymous with "possible NCSE".