[EEG examination in emergency medicine and analysis of unconciousness]

For a long time, the EEG examination has been used as a laboratory examination especially in the diagnostics of epilepsy, but both technical difficulties and problems in interpretation have limited its use in emergency medicine outside special neurological intensive care units. Development of monitoring technology and easier data transfer is making EEG monitoring possible also in the emergency area. The greatest need focuses on the diagnostics and treatment of status epilepticus underlying an unclear unconsciousness. In other indications the usually required information can be obtained by daytime measurements.