[Neurophysiology in status epilepticus]

Cases of status epilepticus (SE) require rapid diagnosis and treatment, including simultaneous, coordinated clinical and neurophysiological assessment. The EEG is the essential diagnostic support that confirms the presence of SE and allows for its differentiation from other processes, and the characterization of type and evolutionary phase, while elucidating situations such as covert SE and nonconvulsive SE whose clinical expression is scarce and diagnosis and management difficult. Finally, EEG monitoring serves to guide treatment and recognize when crises have passed, evaluate drug response and monitor the differed evolutionary control of SE.