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  • Title: New development in intraoperative video monitoring of facial nerve: a pilot study.
    Author: De Seta E, Bertoli G, De Seta D, Covelli E, Filipo R.
    Journal: Otol Neurotol; 2010 Dec; 31(9):1498-502. PubMed ID: 20818288.
    Abstract:
    OBJECTIVE: The present study proposes an evolution of an intraoperative video-based facial nerve monitoring system for otologic and otoneurosurgical procedures in comparison with classical electromyographic (EMG) monitoring method. STUDY DESIGN: Single-subject design study. SETTING: Tertiary referral center, university clinic. PATIENTS: Fifteen patients undergoing a translabyrinthine approach for removal of 2 cm or less acoustic neuroma. INTERVENTION: Intraoperative monitoring during acoustic neuroma removal. MAIN OUTCOME MEASURES: Measurement of mouth angle displacement and EMG peak amplitude at different stimulation intensities were measured and compared to evaluate the validity and reliability of the proposed new system. RESULTS: The electrophysiologic method has been shown to be slightly more sensitive, although it shows limitations especially in terms of electrical artifacts during cauterization, totally masking the EMG monitoring. CONCLUSION: The present version of video system can be considered as valid and reliable as EMG; its main advantages are the absence of electrical artifacts, less invasivity, and much less cost.
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