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KMID : 1195620210140010131
Clinical and Experimental Otorhinolaryngology
2021 Volume.14 No. 1 p.131 ~ p.136
Application of an Intraoperative Neuromonitoring System Using a Surface Pressure Sensor in Parotid Surgery: A Rabbit Model Study
Sung Eui-Suk

Kwon Hyun-Keun
Shin Sung-Chan
Cheon Young-Il
Lee Jung-Woo
Park Da-Hee
Choi Seong-Wook
Kim Hwa-Bin
Park Hye-Jin
Lee Jin-Choon
Ro Jung-Hoon
Lee Byung-Joo
Abstract
Objectives: Facial nerve monitoring (FNM) can be used to identify the facial nerve, to obtain information regarding its course, and to evaluate its status during parotidectomy. However, there has been disagreement regarding the efficacy of FNM in reducing the incidence of facial nerve palsy during parotid surgery. Therefore, instead of using electromyography (EMG) to identify the location and state of the facial nerve, we applied an intraoperative neuromonitoring (IONM) system using a surface pressure sensor to detect facial muscle twitching. The objective of this study was to investigate the feasibility of using the IONM system with a surface pressure sensor to detect facial muscle twitching during parotidectomy.

Methods: We evaluated the stimulus thresholds for the detection of muscle twitching in the orbicularis oris and orbicularis oculi, as well as the amplitude and latency of EMG and the surface pressure sensor in 13 facial nerves of seven rabbits, using the same stimulus intensity.

Results: The surface pressure sensor detected muscle twitching in the orbicularis oris and orbicularis oculi in response to a stimulation of 0.1 mA in all 13 facial nerves. The stimulus threshold did not differ between the surface pressure sensor and EMG.

Conclusion: The application of IONM using a surface pressure sensor during parotidectomy is noninvasive, reliable, and feasible. Therefore, the IONM system with a surface pressure sensor to measure facial muscle twitching may be an alternative to EMG for verifying the status of the facial nerve.
KEYWORD
Intraoperative Neurophysiological Monitoring, Surface Pressure Sensor, Electromyography, Facial Nerve, Parotidectomy
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