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New development in intraoperative video monitoring of facial nerve: a pilot study
Elio De Seta1, GianAntonio Bertoli, Daniele De Seta
1Department of Neurology and Otolaryngology, Sapienza-Università di Roma, Rome, Italy. edeseta@yahoo.it
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.
