Neurosurgery
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The 10th cranial nerve (CN X) is at risk during surgery in the lower cerebellopontine angle (CPA). ⋯ Endotracheal surface electrodes allow identification of vocal cord motor rootlets in the CPA. Worsening of CMAP parameters might indicate functional impairment. These aspects support the use of endotracheal surface electrodes in selected patients in whom the vagus nerve might be at risk during CPA surgery.