Ableitung subkortikaler somatosensibel evozierter Potentiale mit Nasopharyngealelektroden - eine Untersuchung an sedierten Patienten

Examination of nasopharyngeal and tracheal somatosensory evoked potential recordings in dogs

“…However, this method is excellent for monitoring patients under general anes-thesia. 8 Similarly, this method may be useful in comatose patients and in patients with brain death as reported by Wagner. 23 From interpeak latency variations of waveforms obtained by tracheal recordings, it is possible to infer on the propagation of stimulation (ie, on the functioning of the ascending pathways of the spinal cord in the neck).…”

“…9 By use of electrodes located ventromedially from the somatosensory pathway, even potentials that cannot be detected using standard recording methods may also be observed. 7,8,10,11 Nasopharyngeal electrodes have been used primarily to examine the origin of early SSEP components. Comparisons of nasopharyngeal recordings with those from the scalp were performed by Smith et al 6 The aim of their study was to verify the dipole character of the assumed generation site.…”

“…It is, therefore, desirable to find another useful SSEP recording method that can be used in everyday surgical practice. Because general anesthesia usually involves orotracheal or nasotracheal intubation, SSEP recordings obtained by use of pharyngeal and tracheal electrodes, using nasopharyngeal [6][7][8][9] and esophageal 10,11 SSEP recording methods, may be advantageous. Therefore, the purpose of the study presented here was to investigate the value of nasopharyngeal and tracheal recordings of SSEP in anesthetized dogs.…”

Medianus-SEP-Registrierungen im Rahmen der Hirntoddiagnostik: praktische und theoretische Bedeutung einer differenzierten Ableitmethodik des P14-Potentials

“…Facco et al 1990. Guerit 1992, Mauguiire et al 1982, während bei Verwendung einer nasopharyngealen Referenz die P14 in1 Hirntod regelmäßig fehlt (Roncucci et al 1994: Wagner 1988.…”

“…ziert. die erstmals 1988 systematisch beschriebene Ableitung mit Nasopharyngealelektroden (Wagner 1988) wurde nur von wenigen anderen Autoren mitgeteilt (Restuccia e t al. 1995, Roncucci et al 1994, Toniberg e t al.…”