A new score to predict the risk of hearing impairment after microvascular decompression for hemifacial spasm

• Verfasst von: El Damaty, Ahmed [VerfasserIn]
• Titel: A new score to predict the risk of hearing impairment after microvascular decompression for hemifacial spasm
• Verf.angabe: Ahmed El Damaty, Christian Rosenstengel, Marc Matthes, Joerg Baldauf, Oliver Dziemba, Werner Hosemann, Henry W. S. Schroeder
• E-Jahr: 2017
• Jahr: November 2017
• Umfang: 10 S.
• Fussnoten: Gesehen am 27.11.2018
• Titel Quelle: Enthalten in: Neurosurgery
• Ort Quelle: Oxford : Oxford University Press, 1977
• Jahr Quelle: 2017
• Band/Heft Quelle: 81(2017), 5, Seite 834-843
• ISSN Quelle: 1524-4040
• DOI: doi:10.1093/neuros/nyx111
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1584528869

Abstract

Abstract. Background: Intraoperative monitoring of brainstem auditory evoked potentials (BAEPs) has been implemented to reduce the risk of hearing impairment during microvascular decompression for hemifacial spasm. Objective: To evaluate intraoperative monitoring of BAEPs during microvascular decompression in patients with hemifacial spasm for predicting the risk of hearing impairment after surgery. Methods: This prospective study included 100 patients. BAEPs were recorded for all patients. We established a scoring system for the changes in wave I amplitude, I-III interpeak latency, and wave V amplitude and latency. For each change, total points were calculated, and a score out of 6 was assigned to every patient. We classified the patients based on the points scored into 3 risk groups: low-risk (0-3), medium-risk (4-5), and high-risk (6). Further, the correlation between the score and the hearing outcome was evaluated to detect the incidence and degree of hearing impairment. Results: Eighty-seven patients scored 0 to 3, 10 scored 4 to 5, and 3 scored 6. The degree of hearing impairment was proportionate to the score recorded at the end of surgery, and patients in the low-risk group showed no impairment; medium-risk group, deterioration of maximum 2 grades according to World Health Organization classification of hearing impairment; and high-risk group, deterioration of 3 to 4 grades. Conclusion: Intraoperative monitoring of BAEPs evaluated through our scoring system was valuable in predicting hearing impairment after surgery.