Intraoperative auditory steady-state monitoring during surgery in the cerebellopontine angle for estimation of postoperative hearing classes

Rampp, Stefan; Rensch, Leonhard; Simmermacher, Sebastian; Rahne, Torsten; Strauß, Christian; Prell, Julian

doi:10.3171/2016.7.jns16460

Cited by 7 publications

(7 citation statements)

References 40 publications

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“…Brainstem auditor y evoked potentials are an important tool for maintaining the vestibulocochlear nerve function. All patients shall undergo audiometry for pre-and postoperative assessment of the auditory analyzer condition [14].…”

Section: Discussionmentioning

confidence: 99%

Cranial nerve function after cerebellopontine angle meningiomas removal

Hryhorovych¹

2021

Ukr Neurosurg J

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Objective. To analyze cranial nerves (CN) dysfunction incidence in cerebellopontine angle (CPA) meningiomas removal depending on topographic and anatomical tumor location type and define the ways to reduce CN dysfunction incidence and severity. Materials and methods. The study included 30 CPA meningioma patients operated on in the clinic over a 10-year period (from 2010 to 2020 inclusive). Tumor characteristics, the degree of extent (including matrix location, particularly in relation to the internal auditory canal (IAC), jugular foramen (JF), and Meckel’s cave), and supratentorial extension were assessed. The tumors were divided into 5 groups according to the classification of Nakamura et al. Particular attention was paid to the presence and severity of pre- and postoperative cranial nerves dysfunction. Results. Different groups of CPA meningiomas in terms of the presence of a new CN neurological deficit were compared in the study. CN VII dysfunction was more frequently detected in group 2 — meningiomas extending to IAC, which was 54.5% of all observed tumors in this group vs. premeatal tumors, where new CN VII deficit was 20%, in group 1. At the same time in groups 3, 4, and 5 there was no new CN VII deficit. Conclusions. The most frequent symptoms in patients of all groups were dizziness, headache and unsteady gait. Of all the symptoms, only unsteady gait and hearing impairment were more common in patients in group 2, however the differences were statistically insignificant (p = 0.135 and p = 0.268, respectively). Trigeminal nerve and auditory nerve were most commonly affected. Auditory nerve lesions were more often detected in patients of group 2 than in patients of other groups, however, the differences were statistically insignificant (p = 0.268). In general, there were no statistically significant differences between the groups in terms of the incidence of various symptoms and the incidence of CPA cranial nerve damage.

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Section: Discussionmentioning

confidence: 99%

Cranial nerve function after cerebellopontine angle meningiomas removal

Hryhorovych¹

2021

Ukr Neurosurg J

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“…Previous studies reported the utility of auditory steady-state responses for intraoperative monitoring. 12,13 Cortico-cortical evoked potentials have also been applied for intraoperative monitoring to preserve language function. 16,17 The present results indicate that SSCCEPs may replace conventional CCEPs for more convenient intraoperative monitoring; however, further studies are needed.…”

Section: Discussionmentioning

confidence: 99%

“…4 Because the responses to these periodic stimuli have a stable amplitude and phase over time, they are termed steady-state evoked potentials. Steady-state evoked potentials have been used in visual evoked potentials, [4][5][6][7][8][9] auditory evoked potentials, 3,[10][11][12][13] and sensory evoked potentials. 14,15 "Cortico-cortical evoked potential" (CCEP) is a technique for tracing in vivo brain tracts.…”

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confidence: 99%

Steady-State Cortico-Cortical Evoked Potential

Arihara

Enatsu

Ochi

et al. 2021

Journal of Clinical Neurophysiology

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Purpose:The present study evaluated the utility of the steady-state responses of cortico-cortical evoked potentials (SSCCEPs) and compared them with the responses of conventional CCEPs.Methods:Eleven patients with medically intractable focal epilepsy who underwent the implantation of subdural electrodes or stereoelectroencephalography were enrolled. Conventional CCEPs were obtained by averaging responses to alternating 1-Hz electrical stimuli, and 5-Hz stimuli were delivered for recording SSCCEPs. The distribution of SSCCEPs was assessed by a frequency analysis of fast Fourier transform and compared with conventional CCEPs.Results:Steady-state responses of cortico-cortical evoked potentials were successfully recorded in areas consistent with conventional CCEPs in all patients. However, SSCCEPs were more easily disturbed by the 5-Hz stimulation, and small responses had difficulty generating SSCCEPs.Conclusions:Steady-state responses of cortico-cortical evoked potentials may be a useful alternative to conventional CCEPs.

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“…Second, further SDS tests and long-term hearing evaluations would be more helpful for evaluating hearing function. Finally, considering the delay effect of averaged BAEPs, better monitoring patterns [8] and methods [11,13,18] with faster acquisition [8] of valuable indicators are still required.…”

Section: Discussionmentioning

confidence: 99%

Predictive values of maximum changes of brainstem auditory evoked potentials during microvascular decompression for hemifacial spasm

et al. 2020

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Background Brainstem auditory evoked potentials (BAEPs) have been widely monitored to prevent hearing loss (HL) during microvascular decompression (MVD) for hemifacial spasm (HFS); however, their predictive value is still unclear. The aim of this study is to investigate the predictive values of the maximum changes in BAEPs and define the best warning indicator and a cutoff value (CV) during HFS-MVD. Methods The clinical data of 93 HFS-MVD patients were retrospectively analysed. The maximum change rates of the latency and amplitude of waves I, III, and V and the interpeak latencies (IPLs) I-III, I-V, and III-V, when BAEPs change most during MVD, were defined. Pure tone audiometry was performed to evaluate hearing loss (HL). Logistic regression, propensity score, receiver operating curve (ROC), and area under the curve (AUC) were used to identify the predictive value of relevant indexes and to determine the CV (with the largest Youden index) of the best index at different levels of HL. Results The AUCs of BAEPs for predicting HL were 0.98, 0.92, and 0.84 for 50 dB, 30 dB, and 10 dB, respectively. The amplitude of wave V (AwV) was the best single predictive index at all three HL levels. The CV of AwV was 55% (50 dB), 46% (30 dB), and 34% (10 dB). At 50 dB HL, the predictive value of IPLs I-V (AUC 0.89 with CV 0.6 ms) was better than that of LwV (AUC 0.82 with CV 1 ms). Conclusion BAEPs can predict HL well. AwV is the best single predictive index of all BAEPs. The reduction of AwV by 34% (watching), 46% (reporting), and 55% (warning) can be used as a sliding-scale warning sign. In addition, IPLs I-V (> 0.6 ms) and LwV (> 1 ms) should also be observed and reported during MVD.

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Intraoperative auditory steady-state monitoring during surgery in the cerebellopontine angle for estimation of postoperative hearing classes

Cited by 7 publications

References 40 publications

Cranial nerve function after cerebellopontine angle meningiomas removal

Cranial nerve function after cerebellopontine angle meningiomas removal

Steady-State Cortico-Cortical Evoked Potential

Predictive values of maximum changes of brainstem auditory evoked potentials during microvascular decompression for hemifacial spasm

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