• A Haenggeli, M Richter, W Lehmann, and P Dulguerov.
• Department of Otorhinolaryngology--Head and Surgery, Geneva University Hospital, Switzerland.
• Am J Otol. 1999 Sep 1;20(5):679-82.

ObjectiveTo report on three cases of severe facial skin burns resulting from intraoperative facial nerve monitoring in patients undergoing parotidectomies.Study DesignThis study is a retrospective case review.SettingA tertiary referral center.PatientsThis study includes three patients who underwent parotidectomies with concurrent facial nerve monitoring.ResultsFacial skin burns were proven to result from a technical defect of the intraoperative facial nerve monitoring device. Burns were sustained at electrode insertion sites and their extent was related to the duration of monitoring. The most probable explanation of these burns is electrolysis.ConclusionsSuccessful retracing of technical defaults with biomedical engineers at the device manufacturer have led to the upgrade of the facial nerve monitor apparatus. The benefits of facial nerve monitoring largely outweigh the fortuitous occurrence of skin burns reported in this study. Therefore, this complication should not represent a drawback to the use of facial nerve monitoring.

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