Application of electrical stimulation-induced auditory brainstem response monitoring in acoustic neuroma surgery
10.3969/j.issn.1006-7299.2025.03.008
- VernacularTitle:电刺激听性脑干反应监测在听神经瘤术中的应用
- Author:
Tianci FENG
1
;
Maojin LIANG
1
;
Haidi YANG
1
;
Yuebo CHEN
1
;
Xiaowu TANG
1
;
Ling CHEN
1
;
Suijun CHEN
1
Author Information
1. 中山大学孙逸仙纪念医院耳鼻喉科(广州 510030)
- Publication Type:Journal Article
- Keywords:
Acoustic neuroma;
Intraoperative monitoring;
Electrical stimulation-induced auditory brain-stem response(EABR)
- From:
Journal of Audiology and Speech Pathology
2025;33(3):244-248
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the protective effect of electrical stimulation-induced auditory brainstem response(EABR)monitoring on the cochlear nerve pathway during acoustic neuroma surgery.Methods The data of 36 patients who underwent acoustic neuroma surgery were studied,all surgeries were performed using the middle fossa approach.Among them,18 cases were monitored intraoperatively using EABR monitoring 4 times as the mo-nitoring group,while the other 18 cases underwent surgery without monitoring as the control group.The monito-ring group,preoperatively,there were 7 ears classified as grade A,6 ears as grade B,and 5 ears as grade C.The preoperative pure tone average thresholds(0.5,1.0,2.0,4.0 kHz)were 37.60±16.95 dB HL,and the maximum tumor diameter was 13.76±4.37 mm.The control group,preoperatively,there were 4 ears classified as grade A,7 ears as grade B,and 7 ears as grade C.The preoperative pure tone average was 46.80±22.64 dB HL,and the max-imum tumor diameter was 13.74±4.26 mm.Results In the monitoring group,except for the first monitoring,the V-wave evoked rate was 72.22％(13/18),and for the remaining three times,it was 100.00％(18/18).The mini-mum current stimulation intensity that could evoke the V-wave was 0.5 mA,and the V-wave latency was 3.97±0.17 ms.Follow-up was conducted for both groups of patients within 1 to 3 months postoperatively.In the monito-ring group,there were 7 ears classified as grade A,4 ears as grade B,4 ears as grade C,and 3 ears as grade D.Among them,3 patients experienced hearing loss after surgery,and the postoperative pure tone average was 52.20±38.35 dB HL.In the control group,there was 1 ear classified as grade A,1 ear as grade B,6 ears as grade C,and 10 ears as grade D.Among them,10 patients experienced hearing loss after surgery,and the postoperative pure tone average was 90.90±37.28 dB HL.Conclusion EABR monitoring during the resection of acoustic neuroma not only has positive significance for improving the hearing protection rate of acoustic neuroma surgery,but also assists the surgeons in identifying the cochlear nerve during surgery.The integrity of the auditory nerve pathway is protec-ted to the greatest extent for possible cochlear implanting.
