No_intervention: Non-sedative medical treatment

The patient is treated with an additional high-dose intravenous antiepileptic drug, which is selected by the treating neurologist. If NCSE continues to be detected at cEEG or clinically\> 3 hours after starting treatment, the patient should receive standard treatment (i.e. sedation in the intensive care unit or addition of additional intravenous antiepileptic drugs) in accordance with local guidelines and the assessment of the treating neurologist. The following preparations are permitted as additional treatment:~Levetiracetam (60 mg / kg as saturation dose followed by maintenance dose of 2-4 g / day), valproate (60 mg / kg as saturation dose followed by maintenance dose of 20 mg / kg / day), phosphenytoin (20 PE as saturation dose followed by maintenance dose 5 mg PE / kg / day), lacosamide (400 mg as a saturation dose followed by a maintenance dose of 200-400 mg / day), topiramate (200-400 mg per probe as a saturation dose followed by a maintenance dose of 200-400 mg / day).

Experimental: Fast sedation

Within a maximum of 60 minutes after the diagnosis of NCSE (EEG or clinical), the patient must be sedated with high-dose Propofol (bolus 3-5 g / kg, maintenance dose 5-10 mg / kg / hour) to - 5 on the Richmond agitation sedation scale (RASS) for 20 hours, and a single anti-epileptic drug should be added as adjunctive therapy. Addition of low-dose Midazolam (max. 0.1 mg / kg / h) is permitted if deep sedation (defined clinically by RASS -5) is not possible with Propofol alone. After 20 hours, the sedation should be completely phased out within 3 hours.