INTRAOPERATIVE FACIAL-NERVE MONITORING - A DESCRIPTION OF A UNIQUE SYSTEM

Intraoperative facial nerve monitoring has become an integral adjunct in facial nerve identification and preservation for patients undergoin g cerebellopontine angle surgery. Since the first description of EMG m onitoring of facial nerve activity intraoperatively, many systems have been developed. These systems often rely on unilateral monitoring of the facial nerve with auditory feedback to the surgeon, and it is diff icult to distinguish between artifact and significant stimulation of t he facial nerve. In this paper, we present the use of a bilateral, mul tialarm, facial nerve monitoring system that has multiple advantages o ver previous systems. Furthermore, we review our experience with this bilateral system, comparing a group of 50 monitored patients to a grou p of 50 unmonitored patients.