A new score to predict the risk of hearing impairment after microvascular decompression for hemifacial spasm
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 decomp...
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
November 2017
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| In: |
Neurosurgery
Year: 2017, Volume: 81, Issue: 5, Pages: 834-843 |
| ISSN: | 1524-4040 |
| DOI: | 10.1093/neuros/nyx111 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1093/neuros/nyx111 Verlag, Volltext: https://academic.oup.com/neurosurgery/article/81/5/834/3930948 
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| Author Notes: | Ahmed El Damaty, Christian Rosenstengel, Marc Matthes, Joerg Baldauf, Oliver Dziemba, Werner Hosemann, Henry W. S. Schroeder |
| Summary: | 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. |
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| Item Description: | Gesehen am 27.11.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1524-4040 |
| DOI: | 10.1093/neuros/nyx111 |