title: Facial nerve function following cerebellopontine angle surgery: prognostic value of electroneurography.
abstract: Preoperative counseling of patients, regarding facial nerve function following cerebellopontine angle (CPA) surgery, has remained a difficult task. Facial nerve electroneurography (ENoG) or evoked electromyography can detect subclinical neural degeneration. This test was used in 44 patients undergoing CPA surgery, and facial nerve function was followed postoperatively. A normal preoperative ENoG study appeared to predict an 81 percent and 84 percent chance of good (House grade I-II) early and late postoperative facial function, respectively. An abnormal test is not as reliable. The relation of preoperative ENoG results with tumor size and tumor adherence to the facial nerve is investigated. Electroneurography appears to be a useful preoperative test when counseling patients regarding facial function following CPA surgery.
authors.affiliation: Department of Otolaryngology, University of Pittsburgh School of Medicine, Pennsylvania.
authors.forename: S
authors.initials: S
authors.lastname: Prasad
authors.forename: B E
authors.initials: BE
authors.lastname: Hirsch
authors.forename: D B
authors.initials: DB
authors.lastname: Kamerer
authors.forename: J
authors.initials: J
authors.lastname: Durrant
authors.forename: L N
authors.initials: LN
authors.lastname: Sekhar
mesh_terms: D000328:Adult; D000368:Aged; D002528:Cerebellar Neoplasms / Q000473:pathology* / Q000601:surgery; D002530:Cerebellopontine Angle / Q000601:surgery*; D004558:Electric Stimulation; D004576:Electromyography; D005154:Facial Nerve / Q000503:physiopathology*; D005158:Facial Paralysis / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009410:Nerve Degeneration; D009464:Neuroma, Acoustic / Q000473:pathology* / Q000523:psychology / Q000601:surgery; D011183:Postoperative Complications; D011379:Prognosis; D012189:Retrospective Studies