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Intraoperative Monitoring of Hypoglossal Nerve Using Hypoglossal Motor Evoked Potential in Infratentorial Tumor Surgery: A Report of Two Cases
Annals of Rehabilitation Medicine ; : 352-357, 2018.
Article in English | WPRIM | ID: wpr-714264
ABSTRACT
The hypoglossal nerve (CN XII) may be placed at risk during posterior fossa surgeries. The use of intraoperative monitoring (IOM), including the utilization of spontaneous and triggered electromyography (EMG), from tongue muscles innervated by CN XII has been used to reduce these risks. However, there were few reports regarding the intraoperative transcranial motor evoked potential (MEP) of hypoglossal nerve from the tongue muscles. For this reason, we report here two cases of intraoperative hypoglossal MEP monitoring in brain surgery as an indicator of hypoglossal deficits. Although the amplitude of the MEP was reduced in both patients, only in the case 1 whose MEP was disappeared demonstrated the neurological deficits of the hypoglossal nerve. Therefore, the disappearance of the hypoglossal MEP recorded from the tongue, could be considered a predictor of the postoperative hypoglossal nerve deficits.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Tongue / Brain / Infratentorial Neoplasms / Monitoring, Intraoperative / Evoked Potentials, Motor / Electromyography / Hypoglossal Nerve / Muscles Type of study: Prognostic study Limits: Humans Language: English Journal: Annals of Rehabilitation Medicine Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Tongue / Brain / Infratentorial Neoplasms / Monitoring, Intraoperative / Evoked Potentials, Motor / Electromyography / Hypoglossal Nerve / Muscles Type of study: Prognostic study Limits: Humans Language: English Journal: Annals of Rehabilitation Medicine Year: 2018 Type: Article