Auditory Brainstem Implant (ABI): New Frontiers in Adults and Children

Colletti, Vittorio; Carner, Marco; Miorelli, Veronica; Guida, Maurizio; Colletti, Liliana; Fiorino, Francesco

doi:10.1016/j.otohns.2005.03.022

Cited by 140 publications

(125 citation statements)

References 38 publications

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“…2,10,17,31,37,55 In the early stages of this treatment modality results were scarce, and recent reports in the last decade show more satisfying hearing quality. 6,9,49 In part this may be attributed to improved speech processor technology. Most centers encounter a slow long-term improvement in auditory perception in the individual patient far beyond 1 year after activation.…”

Section: Discussionmentioning

confidence: 99%

Auditory brainstem implants in neurofibromatosis Type 2: is open speech perception feasible?

Matthies¹,

Brill²,

Várallyay

et al. 2014

JNS

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Object Patients with bilateral auditory nerve destruction may perceive some auditory input with auditory brainstem implants (ABIs). Despite technological developments and trials in new stimulation sites, hearing is very variable and of limited quality. The goal of this study was to identify advantageous and critical factors that influence the quality of auditory function, especially speech perception. Methods The authors conducted a prospective study on ABI operations performed with the aid of multimodality neuromonitoring between 2005 and 2009 in 18 patients with neurofibromatosis Type 2. Outcome was evaluated by testing word recognition (monotrochee-polysyllabic word test at auditory-only mode [MTPa]) and open speech perception (Hochmair-Schulz-Moser [HSM] sentence test), both in pure auditory mode. The primary outcome was the HSM score at 24 months. The predictive meaning of general clinical data, tumor volume, number of active electrodes, duration of deafness, and early hearing data was examined. Results In 16 successful ABI activations the average score for MTPa was 89% (SD 13%), and for HSM it was 41% (SD 32%) at 24 months. There were 2 nonresponders, 1 after radiosurgery and the other in an anatomical variant. Direct facial nerve reconstruction during the same surgery was followed by successful nerve recovery in 2 patients, with a simultaneous very good HSM result. Patients' age, tumor extension, and tumor volume were not negative predictors. There was an inverse relationship between HSM scores and deafness duration; 50% or higher HSM scores were found only in patients with ipsilateral deafness duration up to 24 months. The higher the deafness sum of both sides, the less likely that any HSM score will be achieved (p = 0.034). In patients with total deafness duration of less than 240 months, higher numbers of active electrodes were significantly associated with better outcomes. The strongest cross-correlation was identified between early MTPa score at 3 months and 24-month HSM outcome. Conclusions This study documents that open-set speech recognition in pure auditory mode is feasible in patients with ABIs. Large tumor volumes do not prevent good outcome. Positive preconditions are short ipsilateral and short bilateral deafness periods and high number of auditory electrodes. Early ability in pure auditory word recognition tests indicates long-term capability of open speech perception.

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Section: Discussionmentioning

confidence: 99%

Auditory brainstem implants in neurofibromatosis Type 2: is open speech perception feasible?

Matthies¹,

Brill²,

Várallyay

et al. 2014

JNS

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“…1 Early correction is particularly important for the 12,000 UK children born prelingually deaf, in whom the lack of early auditory input can restrict language development, a prerequisite for social interaction. 2,28 Likewise, long delays prior to implantation are associated with poor hearing outcomes amongst individuals who have experienced normal hearing before the onset of deafness. 29 As the developing auditory system is particularly sensitive to the effects of sensory deprivation, it seems imperative that children who acquire deafness after meningitis are assessed for CI without significant delay.…”

Section: Recent Advances In Hearing Restorationmentioning

confidence: 99%

“…28 The auditory midbrain implant (AMI) and the auditory brainstem implant (ABI) are targeted at those patients lacking adequate auditory nerve function ( Figure 5). Examples include patients with vestibular schwannomas in neurofibromatosis type-two (NF2), cochlear nerve aplasia, totally ossified cochleae, auditory neuropathies, and after head injury.…”

Section: Midbrain and Brainstem Implantsmentioning

confidence: 99%

“…In cases of NF2 where the brainstem is damaged, the recent development of AMIs to directly stimulate the inferior colliculus may yield improved speech perception. 28 Currently, most ABIs and AMIs have similar components to CIs, with the exception that modified electrodes are implanted on the surface of the brainstem or midbrain nuclei, respectively. 'Penetrating ABIs' are a recent innovation under trial that aim to take advantage of the tonotopic organization within the brainstem nucleus.…”

Section: Midbrain and Brainstem Implantsmentioning

confidence: 99%

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Recent advances in hearing restoration

Kulkarni

Hartley

2008

J R Soc Med

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“…Its indications are bilateral lesions in the auditory nerve and cochlear malformations or ossification that prevents the surgical placement of the arrays of the cochlear implant, as the ABI may be placed directly at the cochlear nucleus on the IV ventricle [1] . The U.S. Food and Drug Administration (FDA) has allowed, since December 2000, the Nucleus 24 Auditory Brainstem Implant System ® (Cochlear Co., Lane Cove, Australia) for patients above 12 years old [2] .…”

Section: Introductionmentioning

confidence: 99%

Auditory Brainstem Implants in Children: Results Based on a Review of the Literature

Monsanto¹,

Bittencourt

Neto³

et al. 2015

Int Adv Otol

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The objective of this study is to review the literature regarding Auditory Brainstem Implant (ABI) indications, surgical techniques, activation methods, and post-surgery follow-up in children. A search was performed in the LILACS, MEDLINE, SciELO, and PubMed databases in June 2014, and the key words used in the search were (("auditory brain stem implant" OR "auditory brainstem implants") OR ("auditory" AND "brainstem" AND ("implants" OR "implant")). Forty-two studies that met the criteria described in "Study Selection" were read in full; 24 studies referred to the ABI fitting process in children, and were selected for appraisal. The studies showed 120 children (younger than 18 years old) fitted with ABIs. Evaluation after surgery showed that 112 (93.3%) of the patients improved in their ability to recognize environmental sounds and speech perception. Patients with tumors or those with cochlear or cochlear nerve malformations had good outcomes as well. Two of the children did not achieve any sound perception upon ABI activation. The results obtained in 120 children fitted with an ABI showed that the patients globally improved in their ability to detect sounds and communication skills. The phenomenon could be seen both in patients with tumoral diseases of the inner ear and those with malformations of the cochlea or cochlear nerve, although patients with non-tumoral issues achieved better results than patients with schwannomas. We propose that the Food and Drug Administration (FDA) ABI indications should be extended to patients younger than 12 years old with NT diseases of the cochlea and cochlear nerve.

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Auditory Brainstem Implant (ABI): New Frontiers in Adults and Children

Cited by 140 publications

References 38 publications

Auditory brainstem implants in neurofibromatosis Type 2: is open speech perception feasible?

Auditory brainstem implants in neurofibromatosis Type 2: is open speech perception feasible?

Recent advances in hearing restoration

Auditory Brainstem Implants in Children: Results Based on a Review of the Literature

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