[Intraoperative identification of oculomotor, trochlear and abducent nerves in surgery of invasive XXXX (new technique)].

@entity1 @entity5 @entity409 @entity51 @entity1653
BACKGROUND: Aim of the study was to evaluate effectiveness of intraoperative identification of oculomotor nerves (OMN) in resection of skull base @entity5 invading superior orbital fissure and cavernous sinus. MATERIALS AND METHODS: 69 @entity1 with @entity5 operated in Burdenko Neurosurgical Institute (Moscow, Russia) since 2000 until 2005 were included in the study. They were divided into 2 groups: 19 @entity1 treated with intraoperative identification of OMN and 50 @entity1 in the control group. @entity1653 were in the majority among all cases. Intraoperative identification of OMN was performed using coaxial electrode while muscular response was registered through electrodes inserted in m. levator palpebrae superioris, m. obliquus superior and m. rectus lateralis (for III, IV and VI cranial nerves, respectively). Identification of IMN trunci was repeated throughout the whole stage of @entity5 resection for their preservation. RESULTS: comparison of dynamics of @entity409 in early postoperative period in @entity1 of both groups demonstrated that intraoperative identification of OMN allowed to decrease the frequency of @entity51 . The rates in main and control groups were: for III and IV nerves--37% and 68% (p < 0.05), for VI nerve--47% and 54% (p > 0.05), respectively. CONCLUSION: application of intraoperative identification of OMN allows to decrease the risk of @entity51 by 1.8 times. Technically the method is quite simple and not time-consuming procedure.
