26 research outputs found
Evoked Potentials (Somatosensory, Early Auditory Evoked Potentials; SEP EAEP) as Evidence for Irreversibility of Clinical Symptoms of Brain Failure
No full textThe fourth update of the rules of the procedure to determine the final, non-recoverable failure of the overall function of the cerebrum, the cerebellum and the brain stem, confirms the importance of somatosensory evoked potentials (SEP) and the early auditory evoked potentials (EAEP) for determination of irreversibility. This paper addresses the reliability and validity of the electrophysiological diagnosis, discusses the changes in the 4(th) version of the guidelines and shows up problems and sources of error in the practical application. The EAEP are valid for the irreversibility of brain death syndrome only in serial examinations or in the rare cases of sustaining wave I or wave I and II. Often an investigation is not reliable due to possible existing sound conduction disturbances or failure of all potentials before entering the clinical brain death syndrome. We therefore use the EAEP only in exceptional cases. The median nerve SEP are reliably derivable, technically simple and with few errors. There is no serial investigation required and the time required for deriving is low
Diagnostische Bedeutung der somatosensorischen evozierten Potentiale nach Trigeminusstimulation
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