Prognostic value of electrically evoked auditory brainstem responses in cochlear implantation

Lundin, Karin; Stillesjö, Fredrik; Rask‐Andersen, Helge

doi:10.1179/1754762815y.0000000005

Cited by 26 publications

(16 citation statements)

References 16 publications

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“…If the auditory brainstem response (ABR) is monitored in a hearing sparing approach for resection, a delay in latency and reduction in amplitude in wave V can predict cochlear nerve damage and portends a poor CI functional outcome. 35 This could be taken into account if a delayed CI placement is being considered with a poor hearing outcome following resection. An electrical ABR can be used in a translabyrinthine approach because of the accessibility of the cochlea and it has been shown to correlate with CI outcomes.…”

Section: Discussionmentioning

confidence: 99%

Cochlear Implantation in Sporadic Vestibular Schwannoma: A Systematic Literature Review

2019

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Objective This study was aimed to perform a systematic literature review by examining outcomes in patients with sporadic vestibular schwannoma (VS) undergoing ipsilateral cochlear implant (CI). Data Sources PubMed-NCBI (National Center for Biotechnology Information) and Scopus databases were searched through October 2017. Study Selection Studies reporting auditory outcomes for each patient when a CI was placed with an ipsilateral sporadic VS were included. Main Outcome Measures Demographic variables, VS characteristics, preoperative hearing metrics, duration of deafness, CI type, approach to tumor resection, postoperative auditory outcomes, and postoperative tinnitus outcomes were reported for each eligible patient within studies. Each study was evaluated for quality and bias. Results Fifteen studies and 45 patients met inclusion criteria. Mean speech discrimination score (SDS) improved from 30.0 to 56.4% after CI placement. The majority when reported had an improvement in tinnitus. Preoperative ipsilateral SDS was a negative predictor of postoperative SDS, while neither tumor resection status, tumor location, duration of deafness, ipsilateral pure tone average, nor timing of CI placement had a significant effect on patient outcome. Conclusions Notwithstanding the challenges inherent with surveillance magnetic resonance imaging (MRI) in the setting of a cochlear implant magnet, select sporadic vestibular schwannoma patients can be considered for cochlear implantation.

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Section: Discussionmentioning

confidence: 99%

Cochlear Implantation in Sporadic Vestibular Schwannoma: A Systematic Literature Review

2019

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“…Since the age at implantation can be as low as 1 year of age, developing objective markers is important for assessing pediatric CI users and candidates who have unreliable behavioral responses. Currently used objective measures such as the stapedius reflex, electrically evoked compound action potentials, and electrically evoked auditory brainstem responses have shown poor correlation with speech perception (Abbas and Brown, 1991;Hirschfelder et al, 2012;Lundin et al, 2015). Unlike these peripheral measures, cortical activity measured at the sensory and source levels has nevertheless shown some reliable relationships with behavioral performance in adult CI users in research settings (Han et al, 2016;Gransier et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Acoustic Change Responses to Amplitude Modulation in Cochlear Implant Users: Relationships to Speech Perception

Han

Dimitrijevic

2020

Front. Neurosci.

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Objectives: The ability to understand speech is highly variable in people with cochlear implants (CIs) and to date, there are no objective measures that identify the root of this discrepancy. However, behavioral measures of temporal processing such as the temporal modulation transfer function (TMTF) has previously found to be related to vowel and consonant identification in CI users. The acoustic change complex (ACC) is a cortical auditory-evoked potential response that can be elicited by a "change" in an ongoing stimulus. In this study, the ACC elicited by amplitude modulation (AM) change was related to measures of speech perception as well as the amplitude detection threshold in CI users.Methods: Ten CI users (mean age: 50 years old) participated in this study. All subjects participated in behavioral tests that included both speech and amplitude modulation detection to obtain a TMTF. CI users were categorized as "good" (n = 6) or "poor" (n = 4) based on their speech-in noise score (<50%). 64-channel electroencephalographic recordings were conducted while CI users passively listened to AM change sounds that were presented in a free field setting. The AM change stimulus was white noise with four different AM rates (4, 40, 100, and 300 Hz). Results:Behavioral results show that AM detection thresholds in CI users were higher compared to the normal-hearing (NH) group for all AM rates. The electrophysiological data suggest that N1 responses were significantly decreased in amplitude and their latencies were increased in CI users compared to NH controls. In addition, the N1 latencies for the poor CI performers were delayed compared to the good CI performers. The N1 latency for 40 Hz AM was correlated with various speech perception measures.Conclusion: Our data suggest that the ACC to AM change provides an objective index of speech perception abilities that can be used to explain some of the variation in speech perception observed among CI users.

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“…Having a biomarker is even more important for pediatric CI users whose speech perception may not be easily evaluated by behavioral measures. However, currently used objective measures such as the stapedius reflex, electrically evoked compound action potentials, or electrically evoked auditory brainstem responses have shown poor relationships with speech perception (Abbas and Brown, 1991; Hirschfelder et al, 2012; Lundin et al, 2015). Among demographical factors, the duration of deafness has been correlated with the speech perception abilities of CI users.…”

Section: Introductionmentioning

confidence: 99%

Brain Plasticity Can Predict the Cochlear Implant Outcome in Adult-Onset Deafness

Han

Lee

Kang

et al. 2019

Front. Hum. Neurosci.

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Sensory plasticity, which is associated with deafness, has not been as thoroughly investigated in the adult brain as it has in the developing brain. In this study, we examined the brain reorganization induced by auditory deprivation in people with adult-onset deafness and its clinical relevance by measuring glucose metabolism before cochlear implant (CI) surgery. F-18 fluorodeoxyglucose positron emission tomography ( 18 F-FDG-PET) scans were performed in 37 postlingually deafened patients during the preoperative workup period, and in 39 normal-hearing (NH) controls. Behavioral CI outcomes were measured at 1 year after implantation using a phoneme identification test with auditory cueing only. In the deaf individuals, areas involved in the auditory pathway such as the inferior colliculus and bilateral superior temporal gyri were hypometabolic compared to the NH controls. The hypometabolism observed in the deaf auditory cortices gradually returned to levels similar to the controls as the duration of deafness increased. However, contrary to our previous findings in congenitally deaf children, this metabolic recovery failed to have a significant prognostic value for the recovery of the speech perception ability in adult CI patients. In a broad occipital area centered on the primary visual cortices, glucose metabolism was higher in the deaf patients than the controls, suggesting that the area had become visually hyperactive for sensory compensation immediately after the onset of deafness. In addition, a negative correlation between the metabolic activity and behavioral speech perception outcomes was observed in the visual association areas. In the medial frontal cortices, cortical metabolism in most patients decreased, but patients who had preserved metabolic activities showed better speech performance. These results suggest that the auditory cortex in people with adult-onset deafness is relatively resistant to cross-modal plasticity, and instead, individual traits in late-stage visual processing and cognitive control seem to be more reliable prognostic markers for adult-onset deafness.

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Prognostic value of electrically evoked auditory brainstem responses in cochlear implantation

Cited by 26 publications

References 16 publications

Cochlear Implantation in Sporadic Vestibular Schwannoma: A Systematic Literature Review

Cochlear Implantation in Sporadic Vestibular Schwannoma: A Systematic Literature Review

Acoustic Change Responses to Amplitude Modulation in Cochlear Implant Users: Relationships to Speech Perception

Brain Plasticity Can Predict the Cochlear Implant Outcome in Adult-Onset Deafness

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