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A New Measure for Monitoring Intraoperative Somatosensory Evoked Potentials
Journal of Korean Neurosurgical Society ; : 455-462, 2014.
Artigo em Inglês | WPRIM | ID: wpr-176261
ABSTRACT

OBJECTIVE:

To propose a new measure for effective monitoring of intraoperative somatosensory evoked potentials (SEP) and to validate the feasibility of this measure for evoked potentials (EP) and single trials with a retrospective data analysis study.

METHODS:

The proposed new measure (hereafter, a slope-measure) was defined as the relative slope of the amplitude and latency at each EP peak compared to the baseline value, which is sensitive to the change in the amplitude and latency simultaneously. We used the slope-measure for EP and single trials and compared the significant change detection time with that of the conventional peak-to-peak method. When applied to single trials, each single trial signal was processed with optimal filters before using the slope-measure. In this retrospective data analysis, 7 patients who underwent cerebral aneurysm clipping surgery for unruptured aneurysm middle cerebral artery (MCA) bifurcation were included.

RESULTS:

We found that this simple slope-measure has a detection time that is as early or earlier than that of the conventional method; furthermore, using the slope-measure in optimally filtered single trials provides warning signs earlier than that of the conventional method during MCA clipping surgery.

CONCLUSION:

Our results have confirmed the feasibility of the slope-measure for intraoperative SEP monitoring. This is a novel study that provides a useful measure for either EP or single trials in intraoperative SEP monitoring.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Aneurisma Intracraniano / Estudos Retrospectivos / Estatística como Assunto / Artéria Cerebral Média / Potenciais Evocados / Potenciais Somatossensoriais Evocados / Monitorização Neurofisiológica Intraoperatória / Aneurisma Tipo de estudo: Estudo observacional Limite: Humanos Idioma: Inglês Revista: Journal of Korean Neurosurgical Society Ano de publicação: 2014 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Aneurisma Intracraniano / Estudos Retrospectivos / Estatística como Assunto / Artéria Cerebral Média / Potenciais Evocados / Potenciais Somatossensoriais Evocados / Monitorização Neurofisiológica Intraoperatória / Aneurisma Tipo de estudo: Estudo observacional Limite: Humanos Idioma: Inglês Revista: Journal of Korean Neurosurgical Society Ano de publicação: 2014 Tipo de documento: Artigo