Abstract
Postoperative vagal dysfunction is a serious complication can lead to dysphonia, dysphagia, pharyngeal or airway obstruction. Therefore, intraoperative monitoring of vagus nerve during surgeries involving the lower brain stem is important to prevent such deficits. Monitoring of vagus nerve can be performed by monitoring free running and stimulated electromyography from the vocal cords. Recording using adhesive surface electrodes on the endotracheal tube approximating the vocal cords can be used to monitor vagus nerve. We report a case of vagal schwannoma with intraoperative vocal cord electromyographic monitoring during the craniotomy and tumor removal. Our case suggests that intraoperative vagus nerve monitoring using surface electrodes on the endotracheal tube could be aid in identifying neural structures and assessing the functional integrity.
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