The cochleovestibular nerve identified during auditory brainstem implantation in patients with narrow internal auditory canals: Can preoperative evaluation predict cochleovestibular nerve deficiency?

Song, Mee Hyun; Kim, Sang Cheol; Kim, Jinna; Chang, Jin Woo; Lee, Won Sang; Choi, Jae Young

doi:10.1002/lary.21791

Cited by 39 publications

(25 citation statements)

References 20 publications

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“…Currently, in smaller series, MRI imaging and electrophysiology are not predictive of outcome with CI, with many reports of children performing sufficiently with CI in these cases to avoid ABI. (31,32)…”

Section: Discussionmentioning

confidence: 99%

Initial Results of a Safety and Feasibility Study of Auditory Brainstem Implantation in Congenitally Deaf Children

Wilkinson

Eisenberg²,

Krieger³

et al. 2017

Otology &Amp; Neurotology

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Objective To determine the safety and feasibility of the auditory brainstem implant (ABI) in congenitally deaf children with cochlear aplasia and/or cochlear nerve deficiency. Study Design Phase I feasibility clinical trial of surgery in 10 children, ages 2 to 5 years, over a 3 year period. Setting Tertiary children’s hospital and university-based pediatric speech/language/hearing center. Intervention(s) ABI implantation and post-surgical programming. Main outcome measure(s) The primary outcome measure is the number and type of adverse events during ABI surgery and post-surgical follow-up, including behavioral mapping of the device. The secondary outcome measure is access to and early integration of sound. Results To date, nine children are enrolled. Five children have successfully undergone ABI surgery and postoperative behavioral programming. Three children were screen failures, and one child is currently undergoing candidacy evaluation. Expected adverse events have been documented in three of the five children who received the ABI. One child experienced a cerebral spinal fluid (CSF) leak, which resolved with lumbar drainage. One child demonstrated vestibular side effects during device programming, which resolved by deactivating one electrode. One child experienced postoperative vomiting resulting in an abdominal radiograph. Four children have completed their 1-year followup and have speech detection thresholds of 30 to 35 dB HL. Scores on the IT-MAIS/MAIS range from 8 to 31 (out of a total of 40), and the children are demonstrating some ability to discriminate between closed-sets words that differ by number of syllables (pattern perception). Conclusions ABI surgery and device activation appears to be safe and feasible in this preliminary cohort.

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Section: Discussionmentioning

confidence: 99%

Initial Results of a Safety and Feasibility Study of Auditory Brainstem Implantation in Congenitally Deaf Children

Wilkinson

Eisenberg²,

Krieger³

et al. 2017

Otology &Amp; Neurotology

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show abstract

“…8,[13][14][15] Beyond this report, few studies, however, have directly addressed imaging necessary to stratify CI and ABI candidates. [16][17][18] Based on our findings, this study raises questions about variable diagnostic utility of MRI scans using reconstructed images.…”

Section: Discussionmentioning

confidence: 71%

“…Prior imaging research in sensorineural hearing loss has focused on the classification of cochlear malformations, with some groups attempting to correlate imaging findings with cochlear implant outcomes . Beyond this report, few studies, however, have directly addressed imaging necessary to stratify CI and ABI candidates . Based on our findings, this study raises questions about variable diagnostic utility of MRI scans using reconstructed images.…”

Section: Discussionmentioning

confidence: 83%

Direct parasagittal magnetic resonance imaging of the internal auditory canal to determine cochlear or auditory brainstem implant candidacy in children

et al. 2015

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“…However, there are limitations in reliable detection of hypoplastic nerves with a diameter of 0.2-0.6 mm (as measured in six individuals with hypoplastic nerves [13]). Accordingly, hypoplastic nerves may be overlooked on MRI scans, as Song et al [14] demonstrated in six patients who underwent ABI implantation. The small nerves were clearly visible intraoperatively, whereas they were missed when preoperative MRI was used with a DRIVE sequence with a FOV of 150 mm and matrix of 256.…”

Section: Hypoplasia and Aplasia Of The Vestibulocochlear Nerve (Vcn)mentioning

confidence: 99%

Some Remarks on Imaging of the Inner Ear: Options and Limitations

Giesemann

Hofmann

2015

Clin Neuroradiol

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The temporal bone has a highly complex anatomical structure, in which the sensory organs of the cochlea and the vestibular system are contained within a small space together with the sound-conducting system of the middle ear. Detailed imaging is thus required in this anatomical area. There are a great many clinical aims for which the highest-possible spatial resolution is required. These include the localization of cerebrospinal fluid fistulas, the detection of malformations of the middle and inner ear and the vestibulocochlear nerve, an aberrant course of the facial nerve and anomalies of the arterial and venous structures, the confirmation of dehiscence of the semicircular canals and finally, the verification of endolymphatic hydrops in cases of Ménière's disease. However, the term 'high resolution' is very time dependent. Two milestones in this respect have been (in 1991) the 3D visualization of the inner ear by means of maximum-intensity projection (MIP) of a T2-weighted constructive interference in steady state (CISS) sequence of a 1.5-tesla magnetic resonance imaging (MRI) scanner (Tanioka et al., Radiology 178:141-144, 1991) and (in 1997) imaging of the vestibulocochlear nerve for the diagnosis of hypoplasia inside the internal auditory canal using the same sequence (Casselman et al., Radiology 202:773-781, 1997).The objective of this article is to highlight the options for, and the challenges of, contemporary imaging with regard to some clinical issues relating to the inner ear.

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The cochleovestibular nerve identified during auditory brainstem implantation in patients with narrow internal auditory canals: Can preoperative evaluation predict cochleovestibular nerve deficiency?

Cited by 39 publications

References 20 publications

Initial Results of a Safety and Feasibility Study of Auditory Brainstem Implantation in Congenitally Deaf Children

Initial Results of a Safety and Feasibility Study of Auditory Brainstem Implantation in Congenitally Deaf Children

Direct parasagittal magnetic resonance imaging of the internal auditory canal to determine cochlear or auditory brainstem implant candidacy in children

Some Remarks on Imaging of the Inner Ear: Options and Limitations

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