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Zusammenfassung

Bei der Untersuchung der somatosensorisch evozierten Potentiale (SEP) in der Intensivmedizin wird meist der N. medianus am Handgelenk stimuliert. Falls vier Verstärker vorhanden sind, erfolgen Ableitungen der nach rostral fortgeleiteten Impulswelle über dem Erbschen Punkt, den Dornfortsätzen C7 und C2 sowie dem sensiblen Kortex. Falls nur zwei Kanäle zur Verfügung stehen, empfiehlt sich die Ableitung über dem unteren Halsmark (C 7) und dem Kortex (C’3 bzw. C’4). Medikamente beeinflussen die zentrale Überleitungszeit zwischen dem negativen Hauptgipfel bei C7 (N 13 a) und dem kortikalen Primärkomplex (negative Hauptkomponente N20/nachfolgende Positivität P25) nur wenig, ebenso wie die Amplituden dieser Reizantworten (s. 4.3.2.6). Die dem Primärkomplex N20/P25 folgenden Wellen mittlerer und spatter Latenz sind demgegenüber pharmaka- und vigilanzabhängig und finden deshalb in der Intensivmedizin wenig Berücksichtigung.

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Riffel, B., Sommer-Edlinger, B., Kroiss, H. (1991). Somatosensorisch evozierte Potentiale (SEP). In: Neurophysiologische Untersuchungsmethoden in der Intensivmedizin. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76675-6_4

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