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[The role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery].
Zhonghua Yi Xue Za Zhi. 2020 Apr 28; 100(16):1245-1248.ZY

Abstract

Objective:

To analyze the role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery.

Methods:

In a retrospective clinical study of 226 patients with acoustic neuroma, admitted to our hospital from January 2016 to May 2019, were investigated by facial nerve motor evoked potentials (FNMEP) elicited by multi-pulse transcranial electrical motor cortex stimulation from. For recording the same electrode set-up was used as for continuous EMG monitoring of the orbicularis oculi,oris muscles and mentalis. Pre-surgical (opening dural), intraoperative and post-surgical (closing dural) FNMEP amplitudes and latencies were recorded. End (closing dura) to start (opening dura) amplitude ratios were compared to early-term(3 day after surgery) facial nerve function by House-Brackmann(HB) Grading.

Results:

201 patients(88.9%) get a total tumor resection, 15 patients (6.6%) were a subtotal resection, 10 patients(4.4%) were a partial resection. 100 percent of patients had a integrated anatomical preservation of facial nerves, there were four (1.8%) death cases in this group. Reliable FNMEPs were obtained in all patients. The ratio of end-operative to start-operative FNMEP-amplitude showed a negative correlation with early facial nerve function. Correlation was especially close with early function: an amplitude preservation rate of 85.3% led to HB Ⅰ or Ⅱ in 190(84.1%) patients, of 45.6% to HB Ⅲ in 17(7.5%) patients, of 23.1% to HB Ⅳ in 13(5.8%) patients and of 6.7% to HB Ⅴor Ⅵ in 6(2.7%) patients. There was a negative correlation between FNMEP amplitude ratio and post-surgical early HB grading(r=-0.895, P=0.000).

Conclusion:

FNMEP was highly reliable in predicting early postoperative facial function of the resection of vestibular schwannoma, was a valid protection technique of facial nerve.

Authors+Show Affiliations

Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China.Department of Electrophysiology, Tianjin Huanhu Hospital, Tianjin 300350, China.Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China.Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China.Department of Neurosurgery, Tianjin Huanhu Hospital, Tianjin 300350, China.

Pub Type(s)

Journal Article

Language

chi

PubMed ID

32344497

Citation

Hong, J, et al. "[The Role of Facial Nerve Motor Evoked Potentials in Predicting Facial Nerve Function in Vestibular Schwannoma Surgery]." Zhonghua Yi Xue Za Zhi, vol. 100, no. 16, 2020, pp. 1245-1248.
Hong J, Han L, Chen BD, et al. [The role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery]. Zhonghua Yi Xue Za Zhi. 2020;100(16):1245-1248.
Hong, J., Han, L., Chen, B. D., Yao, X., & Yang, Y. S. (2020). [The role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery]. Zhonghua Yi Xue Za Zhi, 100(16), 1245-1248. https://doi.org/10.3760/cma.j.cn112137-20191104-02390
Hong J, et al. [The Role of Facial Nerve Motor Evoked Potentials in Predicting Facial Nerve Function in Vestibular Schwannoma Surgery]. Zhonghua Yi Xue Za Zhi. 2020 Apr 28;100(16):1245-1248. PubMed PMID: 32344497.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [The role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery]. AU - Hong,J, AU - Han,L, AU - Chen,B D, AU - Yao,X, AU - Yang,Y S, PY - 2020/4/29/entrez PY - 2020/4/30/pubmed PY - 2020/6/27/medline KW - Evoked potentials, Motor KW - Facial nerve KW - Neuroma, acoustic KW - Prediction SP - 1245 EP - 1248 JF - Zhonghua yi xue za zhi JO - Zhonghua Yi Xue Za Zhi VL - 100 IS - 16 N2 - Objective: To analyze the role of facial nerve motor evoked potentials in predicting facial nerve function in vestibular schwannoma surgery. Methods: In a retrospective clinical study of 226 patients with acoustic neuroma, admitted to our hospital from January 2016 to May 2019, were investigated by facial nerve motor evoked potentials (FNMEP) elicited by multi-pulse transcranial electrical motor cortex stimulation from. For recording the same electrode set-up was used as for continuous EMG monitoring of the orbicularis oculi,oris muscles and mentalis. Pre-surgical (opening dural), intraoperative and post-surgical (closing dural) FNMEP amplitudes and latencies were recorded. End (closing dura) to start (opening dura) amplitude ratios were compared to early-term(3 day after surgery) facial nerve function by House-Brackmann(HB) Grading. Results: 201 patients(88.9%) get a total tumor resection, 15 patients (6.6%) were a subtotal resection, 10 patients(4.4%) were a partial resection. 100 percent of patients had a integrated anatomical preservation of facial nerves, there were four (1.8%) death cases in this group. Reliable FNMEPs were obtained in all patients. The ratio of end-operative to start-operative FNMEP-amplitude showed a negative correlation with early facial nerve function. Correlation was especially close with early function: an amplitude preservation rate of 85.3% led to HB Ⅰ or Ⅱ in 190(84.1%) patients, of 45.6% to HB Ⅲ in 17(7.5%) patients, of 23.1% to HB Ⅳ in 13(5.8%) patients and of 6.7% to HB Ⅴor Ⅵ in 6(2.7%) patients. There was a negative correlation between FNMEP amplitude ratio and post-surgical early HB grading(r=-0.895, P=0.000). Conclusion: FNMEP was highly reliable in predicting early postoperative facial function of the resection of vestibular schwannoma, was a valid protection technique of facial nerve. SN - 0376-2491 UR - https://www.unboundmedicine.com/medline/citation/32344497/[The_role_of_facial_nerve_motor_evoked_potentials_in_predicting_facial_nerve_function_in_vestibular_schwannoma_surgery] L2 - http://journal.yiigle.com/LinkIn.do?linkin_type=pubmed&DOI=10.3760/cma.j.cn112137-20191104-02390 DB - PRIME DP - Unbound Medicine ER -