AI Article Synopsis
- Intraoperative monitoring of facial nerve function using continuous evoked electromyograms (CFN-EMGs) can aid in preserving facial nerve functions during surgery for facial nerve schwannoma (FNS).
- A 39-year-old woman with significant facial palsy underwent decompression surgery 9 weeks after showing severe symptoms; anesthetists applied CFN-EMGs to monitor her condition.
- The CFN-EMGs showed real-time improvement in facial nerve function as the surgeon decompressed the nerve, highlighting its potential as an effective monitoring tool in FNS surgeries.
Article Abstract
Facial nerve function improvement is a challenging goal in facial nerve schwannoma (FNS) surgery. Intraoperative continuous monitoring of evoked facial nerve electromyograms (CFN-EMGs) is performed in acoustic neuroma surgery to preserve facial nerve function. CFN-EMGs were applied in decompression surgery for FNS with severe facial paresis. A 39-year-old woman presented with a sudden onset of vertigo, left hearing disturbance, and severe left facial palsy with House-Brackmann (HB) grade 5. FNS was strongly suspected based on the patient's clinical course and magnetic resonance imaging findings, and the patient underwent surgical decompression of the internal auditory canal (IAC) to improve facial nerve function 9 weeks after onset. CFN-EMG responses suddenly improved after removing the posterior wall of the IAC and incising its dura matter. Since the patient's facial nerve paresis improved to HB grade 2 after surgery, CFN-EMGs could detect the moment of facial nerve decompression. This would be the first report to show that CFN-EMGs applied in decompression surgery for FNS could detect the effects of decompression during surgery in real-time. Thus, CFN-EMGs may be an effective monitoring method in decompression surgery for FNS.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9357452 | PMC |
| http://dx.doi.org/10.2176/jns-nmc.2022-0117 | DOI Listing |
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